./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix009.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:53:45,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:53:46,072 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:53:46,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:53:46,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:53:46,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:53:46,112 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:53:46,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:53:46,113 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:53:46,113 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:53:46,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:53:46,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:53:46,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:53:46,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:53:46,119 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:53:46,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:53:46,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:53:46,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:53:46,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:53:46,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:53:46,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:53:46,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:53:46,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:53:46,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:53:46,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:53:46,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:53:46,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:53:46,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:53:46,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:53:46,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:53:46,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:53:46,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:53:46,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:53:46,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:53:46,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:53:46,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:53:46,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:53:46,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:53:46,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:53:46,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:53:46,129 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:53:46,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:53:46,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:53:46,130 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:53:46,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:53:46,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:53:46,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:53:46,431 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:53:46,431 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:53:46,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix009.opt.yml/witness.yml [2024-06-14 11:53:46,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:53:46,595 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:53:46,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-14 11:53:47,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:53:48,108 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:53:48,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-14 11:53:48,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e03c272c/fd01ed7bdf094325a5f042a88f84e070/FLAG7179dbb63 [2024-06-14 11:53:48,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e03c272c/fd01ed7bdf094325a5f042a88f84e070 [2024-06-14 11:53:48,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:53:48,156 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:53:48,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:53:48,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:53:48,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:53:48,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:53:46" (1/2) ... [2024-06-14 11:53:48,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb8b4e1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:53:48, skipping insertion in model container [2024-06-14 11:53:48,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:53:46" (1/2) ... [2024-06-14 11:53:48,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14b5ec92 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:53:48, skipping insertion in model container [2024-06-14 11:53:48,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:53:48" (2/2) ... [2024-06-14 11:53:48,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb8b4e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48, skipping insertion in model container [2024-06-14 11:53:48,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:53:48" (2/2) ... [2024-06-14 11:53:48,172 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:53:48,244 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:53:48,245 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 11:53:48,246 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 11:53:48,246 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:53:48,246 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-14 11:53:48,291 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:53:48,683 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:53:48,691 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:53:48,808 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:53:48,837 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:53:48,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48 WrapperNode [2024-06-14 11:53:48,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:53:48,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:53:48,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:53:48,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:53:48,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,902 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-14 11:53:48,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:53:48,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:53:48,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:53:48,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:53:48,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,921 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,939 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 11:53:48,949 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:53:48,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:53:48,975 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:53:48,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:53:48,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (1/1) ... [2024-06-14 11:53:48,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:53:49,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:53:49,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 11:53:49,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 11:53:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:53:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:53:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:53:49,060 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:53:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:53:49,060 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:53:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:53:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:53:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:53:49,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:53:49,063 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:53:49,268 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:53:49,270 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:53:49,701 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:53:49,701 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:53:49,866 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:53:49,866 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:53:49,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:53:49 BoogieIcfgContainer [2024-06-14 11:53:49,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:53:49,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:53:49,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:53:49,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:53:49,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:53:46" (1/4) ... [2024-06-14 11:53:49,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d3d3fe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:53:49, skipping insertion in model container [2024-06-14 11:53:49,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:53:48" (2/4) ... [2024-06-14 11:53:49,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d3d3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:53:49, skipping insertion in model container [2024-06-14 11:53:49,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:53:48" (3/4) ... [2024-06-14 11:53:49,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d3d3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:53:49, skipping insertion in model container [2024-06-14 11:53:49,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:53:49" (4/4) ... [2024-06-14 11:53:49,883 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-14 11:53:49,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:53:49,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:53:49,899 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:53:49,946 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:53:49,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 11:53:50,007 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-14 11:53:50,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:53:50,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:53:50,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 11:53:50,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-14 11:53:50,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:53:50,053 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@222582fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:53:50,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:53:50,059 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:53:50,059 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 11:53:50,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:53:50,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:50,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:53:50,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:50,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1580010432, now seen corresponding path program 1 times [2024-06-14 11:53:50,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:50,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094430244] [2024-06-14 11:53:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:50,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:51,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:51,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094430244] [2024-06-14 11:53:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094430244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:51,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:51,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:53:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158760837] [2024-06-14 11:53:51,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:51,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:53:51,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:51,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:53:51,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:53:51,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-14 11:53:51,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:51,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:51,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-14 11:53:51,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:51,427 INFO L124 PetriNetUnfolderBase]: 162/317 cut-off events. [2024-06-14 11:53:51,428 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 11:53:51,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 317 events. 162/317 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1277 event pairs, 97 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-14 11:53:51,435 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 23 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-14 11:53:51,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 123 flow [2024-06-14 11:53:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:53:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:53:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-06-14 11:53:51,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2024-06-14 11:53:51,448 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 58 transitions. [2024-06-14 11:53:51,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 123 flow [2024-06-14 11:53:51,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:53:51,453 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-14 11:53:51,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-14 11:53:51,458 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-14 11:53:51,458 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-14 11:53:51,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:51,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:51,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:51,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:53:51,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:51,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2028483035, now seen corresponding path program 1 times [2024-06-14 11:53:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003450947] [2024-06-14 11:53:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:51,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:52,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003450947] [2024-06-14 11:53:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003450947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:52,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:52,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:53:52,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598342172] [2024-06-14 11:53:52,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:52,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:53:52,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:52,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:53:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:53:52,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 11:53:52,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:52,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:52,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 11:53:52,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:52,223 INFO L124 PetriNetUnfolderBase]: 186/347 cut-off events. [2024-06-14 11:53:52,224 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-14 11:53:52,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 791 conditions, 347 events. 186/347 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1360 event pairs, 94 based on Foata normal form. 2/346 useless extension candidates. Maximal degree in co-relation 776. Up to 319 conditions per place. [2024-06-14 11:53:52,227 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-14 11:53:52,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 167 flow [2024-06-14 11:53:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:53:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:53:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-06-14 11:53:52,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-06-14 11:53:52,229 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 71 transitions. [2024-06-14 11:53:52,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 167 flow [2024-06-14 11:53:52,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:53:52,231 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-14 11:53:52,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-14 11:53:52,232 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-14 11:53:52,233 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-14 11:53:52,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:52,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:52,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:52,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:53:52,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:52,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:52,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1543321887, now seen corresponding path program 1 times [2024-06-14 11:53:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:52,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696452280] [2024-06-14 11:53:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:52,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:52,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696452280] [2024-06-14 11:53:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696452280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:52,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:52,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:53:52,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747791088] [2024-06-14 11:53:52,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:52,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:53:52,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:52,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:53:52,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:53:53,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:53:53,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:53,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:53,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:53:53,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:53,152 INFO L124 PetriNetUnfolderBase]: 219/398 cut-off events. [2024-06-14 11:53:53,152 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-06-14 11:53:53,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 398 events. 219/398 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1500 event pairs, 99 based on Foata normal form. 2/397 useless extension candidates. Maximal degree in co-relation 989. Up to 366 conditions per place. [2024-06-14 11:53:53,156 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 33 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-14 11:53:53,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 217 flow [2024-06-14 11:53:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:53:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:53:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-14 11:53:53,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2024-06-14 11:53:53,158 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 82 transitions. [2024-06-14 11:53:53,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 217 flow [2024-06-14 11:53:53,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:53:53,160 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-14 11:53:53,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-14 11:53:53,161 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-14 11:53:53,161 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-14 11:53:53,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:53,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:53,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:53,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:53:53,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:53,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash -598337282, now seen corresponding path program 1 times [2024-06-14 11:53:53,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:53,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965791175] [2024-06-14 11:53:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:53,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:53,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965791175] [2024-06-14 11:53:53,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965791175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:53,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:53,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:53:53,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502129551] [2024-06-14 11:53:53,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:53,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:53:53,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:53,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:53:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:53:53,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:53:53,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:53,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:53,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:53:53,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:54,106 INFO L124 PetriNetUnfolderBase]: 213/388 cut-off events. [2024-06-14 11:53:54,107 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-06-14 11:53:54,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 388 events. 213/388 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1465 event pairs, 57 based on Foata normal form. 4/390 useless extension candidates. Maximal degree in co-relation 1048. Up to 338 conditions per place. [2024-06-14 11:53:54,110 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 38 selfloop transitions, 9 changer transitions 0/50 dead transitions. [2024-06-14 11:53:54,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 269 flow [2024-06-14 11:53:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-14 11:53:54,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-06-14 11:53:54,112 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 6 states and 97 transitions. [2024-06-14 11:53:54,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 269 flow [2024-06-14 11:53:54,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 254 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 11:53:54,114 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 147 flow [2024-06-14 11:53:54,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-14 11:53:54,115 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-14 11:53:54,116 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 147 flow [2024-06-14 11:53:54,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:54,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:54,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:53:54,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:54,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1811781310, now seen corresponding path program 1 times [2024-06-14 11:53:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:54,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769151466] [2024-06-14 11:53:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:54,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:54,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769151466] [2024-06-14 11:53:54,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769151466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:54,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:54,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:53:54,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599589675] [2024-06-14 11:53:54,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:54,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:53:54,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:54,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:53:54,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:53:54,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 11:53:54,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:54,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:54,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 11:53:54,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:55,146 INFO L124 PetriNetUnfolderBase]: 165/334 cut-off events. [2024-06-14 11:53:55,146 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-06-14 11:53:55,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 334 events. 165/334 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1308 event pairs, 61 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 946. Up to 291 conditions per place. [2024-06-14 11:53:55,149 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-06-14 11:53:55,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 233 flow [2024-06-14 11:53:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:53:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:53:55,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-14 11:53:55,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-14 11:53:55,151 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 147 flow. Second operand 5 states and 75 transitions. [2024-06-14 11:53:55,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 233 flow [2024-06-14 11:53:55,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 212 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:55,153 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 153 flow [2024-06-14 11:53:55,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-14 11:53:55,154 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-14 11:53:55,154 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 153 flow [2024-06-14 11:53:55,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:55,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:55,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:53:55,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:55,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash -300257916, now seen corresponding path program 1 times [2024-06-14 11:53:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:55,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525565099] [2024-06-14 11:53:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:55,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:56,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:56,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525565099] [2024-06-14 11:53:56,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525565099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:56,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:56,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:56,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099483059] [2024-06-14 11:53:56,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:56,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:56,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:56,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 11:53:56,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 153 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:56,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:56,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 11:53:56,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:56,760 INFO L124 PetriNetUnfolderBase]: 163/331 cut-off events. [2024-06-14 11:53:56,760 INFO L125 PetriNetUnfolderBase]: For 597/597 co-relation queries the response was YES. [2024-06-14 11:53:56,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 331 events. 163/331 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1287 event pairs, 60 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 977. Up to 285 conditions per place. [2024-06-14 11:53:56,763 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 29 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-14 11:53:56,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 249 flow [2024-06-14 11:53:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-14 11:53:56,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-14 11:53:56,764 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 153 flow. Second operand 6 states and 87 transitions. [2024-06-14 11:53:56,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 249 flow [2024-06-14 11:53:56,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 238 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 11:53:56,767 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 175 flow [2024-06-14 11:53:56,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=175, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-14 11:53:56,768 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-06-14 11:53:56,768 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 175 flow [2024-06-14 11:53:56,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:56,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:56,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:56,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:53:56,769 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:56,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:56,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1232763347, now seen corresponding path program 1 times [2024-06-14 11:53:56,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:56,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249440771] [2024-06-14 11:53:56,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:56,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:57,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:57,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249440771] [2024-06-14 11:53:57,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249440771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:57,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:57,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:57,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688233330] [2024-06-14 11:53:57,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:57,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:57,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:57,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:53:57,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:57,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:57,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:53:57,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:57,887 INFO L124 PetriNetUnfolderBase]: 197/375 cut-off events. [2024-06-14 11:53:57,887 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2024-06-14 11:53:57,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 375 events. 197/375 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1439 event pairs, 73 based on Foata normal form. 1/373 useless extension candidates. Maximal degree in co-relation 1214. Up to 336 conditions per place. [2024-06-14 11:53:57,890 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 33 selfloop transitions, 12 changer transitions 0/50 dead transitions. [2024-06-14 11:53:57,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 315 flow [2024-06-14 11:53:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:53:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:53:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-14 11:53:57,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-06-14 11:53:57,892 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 175 flow. Second operand 7 states and 94 transitions. [2024-06-14 11:53:57,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 315 flow [2024-06-14 11:53:57,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 296 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:57,895 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 235 flow [2024-06-14 11:53:57,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-14 11:53:57,897 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2024-06-14 11:53:57,897 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 235 flow [2024-06-14 11:53:57,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:57,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:57,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:57,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:53:57,898 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:57,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1692710559, now seen corresponding path program 2 times [2024-06-14 11:53:57,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:57,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665690265] [2024-06-14 11:53:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:57,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:58,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:58,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665690265] [2024-06-14 11:53:58,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665690265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:58,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:58,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:58,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427863186] [2024-06-14 11:53:58,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:58,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:58,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:58,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:58,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:53:58,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 235 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:58,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:58,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:53:58,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:58,938 INFO L124 PetriNetUnfolderBase]: 200/380 cut-off events. [2024-06-14 11:53:58,939 INFO L125 PetriNetUnfolderBase]: For 1201/1201 co-relation queries the response was YES. [2024-06-14 11:53:58,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 380 events. 200/380 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1441 event pairs, 71 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1333. Up to 341 conditions per place. [2024-06-14 11:53:58,942 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 38 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-06-14 11:53:58,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 379 flow [2024-06-14 11:53:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:53:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:53:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-14 11:53:58,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4199134199134199 [2024-06-14 11:53:58,944 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 235 flow. Second operand 7 states and 97 transitions. [2024-06-14 11:53:58,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 379 flow [2024-06-14 11:53:58,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 365 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 11:53:58,947 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 282 flow [2024-06-14 11:53:58,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-06-14 11:53:58,947 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-06-14 11:53:58,948 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 282 flow [2024-06-14 11:53:58,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:58,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:58,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:58,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:53:58,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1660061087, now seen corresponding path program 3 times [2024-06-14 11:53:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:58,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440934745] [2024-06-14 11:53:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:58,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:59,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:59,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440934745] [2024-06-14 11:53:59,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440934745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:59,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:59,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:59,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542740367] [2024-06-14 11:53:59,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:59,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:59,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:59,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:59,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:59,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:53:59,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:59,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:59,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:53:59,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:59,987 INFO L124 PetriNetUnfolderBase]: 198/378 cut-off events. [2024-06-14 11:53:59,987 INFO L125 PetriNetUnfolderBase]: For 1636/1636 co-relation queries the response was YES. [2024-06-14 11:53:59,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 378 events. 198/378 cut-off events. For 1636/1636 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1461 event pairs, 74 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 1408. Up to 329 conditions per place. [2024-06-14 11:53:59,990 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 33 selfloop transitions, 16 changer transitions 0/54 dead transitions. [2024-06-14 11:53:59,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 408 flow [2024-06-14 11:53:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-14 11:53:59,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 11:53:59,991 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 282 flow. Second operand 6 states and 84 transitions. [2024-06-14 11:53:59,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 408 flow [2024-06-14 11:53:59,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 379 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:59,996 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 310 flow [2024-06-14 11:53:59,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-06-14 11:53:59,997 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2024-06-14 11:53:59,997 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 310 flow [2024-06-14 11:53:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:59,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:59,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:59,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:53:59,998 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:59,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1190347907, now seen corresponding path program 1 times [2024-06-14 11:53:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:00,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122415556] [2024-06-14 11:54:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:00,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:01,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122415556] [2024-06-14 11:54:01,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122415556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:01,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:01,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:01,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227607174] [2024-06-14 11:54:01,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:01,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:01,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:01,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:01,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:01,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 310 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:01,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:01,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:01,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:01,474 INFO L124 PetriNetUnfolderBase]: 211/386 cut-off events. [2024-06-14 11:54:01,474 INFO L125 PetriNetUnfolderBase]: For 1926/1926 co-relation queries the response was YES. [2024-06-14 11:54:01,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 386 events. 211/386 cut-off events. For 1926/1926 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1412 event pairs, 31 based on Foata normal form. 4/388 useless extension candidates. Maximal degree in co-relation 1492. Up to 312 conditions per place. [2024-06-14 11:54:01,478 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 51 selfloop transitions, 16 changer transitions 0/70 dead transitions. [2024-06-14 11:54:01,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 496 flow [2024-06-14 11:54:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:01,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-14 11:54:01,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45075757575757575 [2024-06-14 11:54:01,479 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 310 flow. Second operand 8 states and 119 transitions. [2024-06-14 11:54:01,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 496 flow [2024-06-14 11:54:01,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 455 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:01,483 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 306 flow [2024-06-14 11:54:01,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=306, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2024-06-14 11:54:01,484 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2024-06-14 11:54:01,484 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 306 flow [2024-06-14 11:54:01,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:01,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:01,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:01,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:54:01,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:01,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:01,485 INFO L85 PathProgramCache]: Analyzing trace with hash -158640217, now seen corresponding path program 1 times [2024-06-14 11:54:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:01,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627263185] [2024-06-14 11:54:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:01,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627263185] [2024-06-14 11:54:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627263185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:02,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:02,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:02,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862333915] [2024-06-14 11:54:02,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:02,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:02,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:02,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:02,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 306 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:02,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:02,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:02,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:02,649 INFO L124 PetriNetUnfolderBase]: 214/391 cut-off events. [2024-06-14 11:54:02,650 INFO L125 PetriNetUnfolderBase]: For 2271/2271 co-relation queries the response was YES. [2024-06-14 11:54:02,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 391 events. 214/391 cut-off events. For 2271/2271 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1432 event pairs, 48 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 1583. Up to 350 conditions per place. [2024-06-14 11:54:02,653 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 46 selfloop transitions, 14 changer transitions 0/63 dead transitions. [2024-06-14 11:54:02,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 470 flow [2024-06-14 11:54:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 11:54:02,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39826839826839827 [2024-06-14 11:54:02,656 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 306 flow. Second operand 7 states and 92 transitions. [2024-06-14 11:54:02,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 470 flow [2024-06-14 11:54:02,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 434 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:02,660 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 321 flow [2024-06-14 11:54:02,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=321, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-14 11:54:02,661 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2024-06-14 11:54:02,661 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 321 flow [2024-06-14 11:54:02,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:02,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:02,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:54:02,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:02,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash 439042685, now seen corresponding path program 2 times [2024-06-14 11:54:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:02,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096464243] [2024-06-14 11:54:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:03,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:03,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096464243] [2024-06-14 11:54:03,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096464243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:03,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:03,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535629225] [2024-06-14 11:54:03,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:03,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:03,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:03,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:03,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:03,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 321 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:03,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:03,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:03,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:03,835 INFO L124 PetriNetUnfolderBase]: 217/396 cut-off events. [2024-06-14 11:54:03,835 INFO L125 PetriNetUnfolderBase]: For 2722/2722 co-relation queries the response was YES. [2024-06-14 11:54:03,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 396 events. 217/396 cut-off events. For 2722/2722 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1456 event pairs, 48 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1662. Up to 344 conditions per place. [2024-06-14 11:54:03,838 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 43 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-06-14 11:54:03,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 483 flow [2024-06-14 11:54:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-14 11:54:03,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:54:03,840 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 321 flow. Second operand 7 states and 91 transitions. [2024-06-14 11:54:03,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 483 flow [2024-06-14 11:54:03,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 448 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:03,846 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 348 flow [2024-06-14 11:54:03,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=348, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-14 11:54:03,848 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2024-06-14 11:54:03,848 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 348 flow [2024-06-14 11:54:03,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:03,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:03,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:03,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:54:03,849 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:03,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash 439042933, now seen corresponding path program 1 times [2024-06-14 11:54:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:03,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119575708] [2024-06-14 11:54:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:03,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:04,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:04,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119575708] [2024-06-14 11:54:04,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119575708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:04,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:04,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:04,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2998006] [2024-06-14 11:54:04,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:04,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:04,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:04,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:04,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:04,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:04,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 348 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:04,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:04,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:04,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:05,172 INFO L124 PetriNetUnfolderBase]: 207/388 cut-off events. [2024-06-14 11:54:05,172 INFO L125 PetriNetUnfolderBase]: For 3173/3173 co-relation queries the response was YES. [2024-06-14 11:54:05,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 388 events. 207/388 cut-off events. For 3173/3173 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1456 event pairs, 47 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 1677. Up to 333 conditions per place. [2024-06-14 11:54:05,175 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 41 selfloop transitions, 16 changer transitions 0/64 dead transitions. [2024-06-14 11:54:05,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 494 flow [2024-06-14 11:54:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-14 11:54:05,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-14 11:54:05,177 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 348 flow. Second operand 7 states and 95 transitions. [2024-06-14 11:54:05,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 494 flow [2024-06-14 11:54:05,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 450 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:05,182 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 358 flow [2024-06-14 11:54:05,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=358, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-06-14 11:54:05,183 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2024-06-14 11:54:05,183 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 358 flow [2024-06-14 11:54:05,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:05,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:05,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:05,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:54:05,184 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:05,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:05,184 INFO L85 PathProgramCache]: Analyzing trace with hash 78011551, now seen corresponding path program 2 times [2024-06-14 11:54:05,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:05,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223600449] [2024-06-14 11:54:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:05,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223600449] [2024-06-14 11:54:06,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223600449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:06,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:06,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:06,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288215252] [2024-06-14 11:54:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:06,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:06,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:06,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 358 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:06,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:06,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:06,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:06,671 INFO L124 PetriNetUnfolderBase]: 210/394 cut-off events. [2024-06-14 11:54:06,671 INFO L125 PetriNetUnfolderBase]: For 3651/3651 co-relation queries the response was YES. [2024-06-14 11:54:06,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1798 conditions, 394 events. 210/394 cut-off events. For 3651/3651 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1478 event pairs, 50 based on Foata normal form. 1/391 useless extension candidates. Maximal degree in co-relation 1764. Up to 322 conditions per place. [2024-06-14 11:54:06,675 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 39 selfloop transitions, 22 changer transitions 0/68 dead transitions. [2024-06-14 11:54:06,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 558 flow [2024-06-14 11:54:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 11:54:06,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-14 11:54:06,677 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 358 flow. Second operand 7 states and 96 transitions. [2024-06-14 11:54:06,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 558 flow [2024-06-14 11:54:06,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 522 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:06,682 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 422 flow [2024-06-14 11:54:06,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=422, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-14 11:54:06,683 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2024-06-14 11:54:06,683 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 422 flow [2024-06-14 11:54:06,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:06,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:06,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:06,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:54:06,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:06,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash -785322419, now seen corresponding path program 3 times [2024-06-14 11:54:06,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:06,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956568210] [2024-06-14 11:54:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:07,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:07,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956568210] [2024-06-14 11:54:07,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956568210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:07,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:07,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:07,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830641750] [2024-06-14 11:54:07,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:07,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:07,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:07,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:07,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:07,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 422 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:07,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:07,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:07,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:07,776 INFO L124 PetriNetUnfolderBase]: 221/403 cut-off events. [2024-06-14 11:54:07,776 INFO L125 PetriNetUnfolderBase]: For 4142/4142 co-relation queries the response was YES. [2024-06-14 11:54:07,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 403 events. 221/403 cut-off events. For 4142/4142 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1488 event pairs, 53 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1904. Up to 342 conditions per place. [2024-06-14 11:54:07,780 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 48 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-14 11:54:07,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 596 flow [2024-06-14 11:54:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-14 11:54:07,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-14 11:54:07,781 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 422 flow. Second operand 7 states and 90 transitions. [2024-06-14 11:54:07,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 596 flow [2024-06-14 11:54:07,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 565 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 11:54:07,790 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 460 flow [2024-06-14 11:54:07,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=460, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2024-06-14 11:54:07,792 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-14 11:54:07,792 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 460 flow [2024-06-14 11:54:07,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:07,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:07,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:07,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:54:07,793 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:07,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash 445529683, now seen corresponding path program 3 times [2024-06-14 11:54:07,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:07,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769113579] [2024-06-14 11:54:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:07,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:08,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769113579] [2024-06-14 11:54:08,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769113579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:08,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:08,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:08,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003706168] [2024-06-14 11:54:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:08,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:08,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:08,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:08,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 460 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:08,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:08,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:08,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:09,095 INFO L124 PetriNetUnfolderBase]: 206/387 cut-off events. [2024-06-14 11:54:09,096 INFO L125 PetriNetUnfolderBase]: For 4494/4494 co-relation queries the response was YES. [2024-06-14 11:54:09,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1916 conditions, 387 events. 206/387 cut-off events. For 4494/4494 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1466 event pairs, 50 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 1878. Up to 329 conditions per place. [2024-06-14 11:54:09,099 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 44 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2024-06-14 11:54:09,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 605 flow [2024-06-14 11:54:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-14 11:54:09,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-06-14 11:54:09,101 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 460 flow. Second operand 7 states and 94 transitions. [2024-06-14 11:54:09,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 605 flow [2024-06-14 11:54:09,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 544 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:09,107 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 449 flow [2024-06-14 11:54:09,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-06-14 11:54:09,108 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2024-06-14 11:54:09,109 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 449 flow [2024-06-14 11:54:09,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:09,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:09,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:09,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:54:09,110 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:09,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash 78022463, now seen corresponding path program 1 times [2024-06-14 11:54:09,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:09,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943802973] [2024-06-14 11:54:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:09,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:10,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:10,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943802973] [2024-06-14 11:54:10,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943802973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:10,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:10,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:10,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270817496] [2024-06-14 11:54:10,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:10,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:10,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:10,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:10,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:10,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 449 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:10,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:10,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:10,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:10,855 INFO L124 PetriNetUnfolderBase]: 203/383 cut-off events. [2024-06-14 11:54:10,856 INFO L125 PetriNetUnfolderBase]: For 4881/4881 co-relation queries the response was YES. [2024-06-14 11:54:10,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 383 events. 203/383 cut-off events. For 4881/4881 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1442 event pairs, 47 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1863. Up to 340 conditions per place. [2024-06-14 11:54:10,859 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 52 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-14 11:54:10,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 601 flow [2024-06-14 11:54:10,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-14 11:54:10,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-14 11:54:10,861 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 449 flow. Second operand 7 states and 93 transitions. [2024-06-14 11:54:10,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 601 flow [2024-06-14 11:54:10,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 564 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:10,867 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 456 flow [2024-06-14 11:54:10,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=456, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-06-14 11:54:10,868 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 48 predicate places. [2024-06-14 11:54:10,868 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 456 flow [2024-06-14 11:54:10,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:10,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:10,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:10,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:54:10,869 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:10,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash 719708236, now seen corresponding path program 1 times [2024-06-14 11:54:10,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:10,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98405043] [2024-06-14 11:54:10,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:10,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:11,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98405043] [2024-06-14 11:54:11,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98405043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:11,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:11,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:11,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328855886] [2024-06-14 11:54:11,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:11,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:11,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:11,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:11,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:11,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:11,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 456 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:11,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:11,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:11,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:12,229 INFO L124 PetriNetUnfolderBase]: 231/425 cut-off events. [2024-06-14 11:54:12,230 INFO L125 PetriNetUnfolderBase]: For 5712/5712 co-relation queries the response was YES. [2024-06-14 11:54:12,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 425 events. 231/425 cut-off events. For 5712/5712 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1621 event pairs, 48 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 2108. Up to 361 conditions per place. [2024-06-14 11:54:12,233 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 63 selfloop transitions, 20 changer transitions 0/86 dead transitions. [2024-06-14 11:54:12,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 86 transitions, 713 flow [2024-06-14 11:54:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:12,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 11:54:12,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 11:54:12,235 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 456 flow. Second operand 9 states and 114 transitions. [2024-06-14 11:54:12,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 86 transitions, 713 flow [2024-06-14 11:54:12,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 666 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:12,241 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 522 flow [2024-06-14 11:54:12,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=522, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-06-14 11:54:12,242 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2024-06-14 11:54:12,242 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 522 flow [2024-06-14 11:54:12,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:12,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:12,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:12,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:54:12,243 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:12,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:12,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2024008576, now seen corresponding path program 2 times [2024-06-14 11:54:12,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:12,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715569836] [2024-06-14 11:54:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:12,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:13,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:13,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715569836] [2024-06-14 11:54:13,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715569836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:13,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:13,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:13,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747978706] [2024-06-14 11:54:13,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:13,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:13,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:13,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:13,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:13,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:13,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 522 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:13,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:13,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:13,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:13,357 INFO L124 PetriNetUnfolderBase]: 247/455 cut-off events. [2024-06-14 11:54:13,358 INFO L125 PetriNetUnfolderBase]: For 6982/6982 co-relation queries the response was YES. [2024-06-14 11:54:13,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 455 events. 247/455 cut-off events. For 6982/6982 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1765 event pairs, 49 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2379. Up to 367 conditions per place. [2024-06-14 11:54:13,362 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 64 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-06-14 11:54:13,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 822 flow [2024-06-14 11:54:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 11:54:13,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-14 11:54:13,364 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 522 flow. Second operand 8 states and 107 transitions. [2024-06-14 11:54:13,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 822 flow [2024-06-14 11:54:13,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 787 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-14 11:54:13,372 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 594 flow [2024-06-14 11:54:13,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2024-06-14 11:54:13,373 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2024-06-14 11:54:13,373 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 594 flow [2024-06-14 11:54:13,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:13,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:13,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:13,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:54:13,373 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:13,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash -622878405, now seen corresponding path program 1 times [2024-06-14 11:54:13,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:13,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400129208] [2024-06-14 11:54:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:14,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400129208] [2024-06-14 11:54:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400129208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:14,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:14,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328613349] [2024-06-14 11:54:14,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:14,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:14,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:14,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:14,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 594 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:14,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:14,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:14,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:14,823 INFO L124 PetriNetUnfolderBase]: 250/459 cut-off events. [2024-06-14 11:54:14,824 INFO L125 PetriNetUnfolderBase]: For 7711/7711 co-relation queries the response was YES. [2024-06-14 11:54:14,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 459 events. 250/459 cut-off events. For 7711/7711 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1795 event pairs, 47 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2471. Up to 404 conditions per place. [2024-06-14 11:54:14,828 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2024-06-14 11:54:14,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 823 flow [2024-06-14 11:54:14,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-14 11:54:14,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:54:14,831 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 594 flow. Second operand 8 states and 102 transitions. [2024-06-14 11:54:14,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 823 flow [2024-06-14 11:54:14,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 780 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:14,841 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 612 flow [2024-06-14 11:54:14,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=612, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-06-14 11:54:14,841 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-14 11:54:14,841 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 612 flow [2024-06-14 11:54:14,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:14,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:14,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:14,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:54:14,842 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:14,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1168316743, now seen corresponding path program 2 times [2024-06-14 11:54:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:14,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093998217] [2024-06-14 11:54:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:14,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:15,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:15,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093998217] [2024-06-14 11:54:15,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093998217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:15,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:15,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:15,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254662438] [2024-06-14 11:54:15,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:15,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:15,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:15,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:15,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 612 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:15,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:15,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:15,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:16,098 INFO L124 PetriNetUnfolderBase]: 258/472 cut-off events. [2024-06-14 11:54:16,099 INFO L125 PetriNetUnfolderBase]: For 8474/8474 co-relation queries the response was YES. [2024-06-14 11:54:16,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 472 events. 258/472 cut-off events. For 8474/8474 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1860 event pairs, 45 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 2618. Up to 394 conditions per place. [2024-06-14 11:54:16,103 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 67 selfloop transitions, 25 changer transitions 0/95 dead transitions. [2024-06-14 11:54:16,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 907 flow [2024-06-14 11:54:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 11:54:16,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-06-14 11:54:16,105 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 612 flow. Second operand 8 states and 103 transitions. [2024-06-14 11:54:16,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 907 flow [2024-06-14 11:54:16,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 862 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:16,117 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 666 flow [2024-06-14 11:54:16,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2024-06-14 11:54:16,117 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-06-14 11:54:16,117 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 666 flow [2024-06-14 11:54:16,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:16,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:16,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:16,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:54:16,118 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:16,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:16,119 INFO L85 PathProgramCache]: Analyzing trace with hash 725430092, now seen corresponding path program 1 times [2024-06-14 11:54:16,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:16,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837942667] [2024-06-14 11:54:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:16,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:17,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:17,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837942667] [2024-06-14 11:54:17,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837942667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:17,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:17,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:17,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102196470] [2024-06-14 11:54:17,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:17,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:17,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:17,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 666 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:17,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:17,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:17,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:17,531 INFO L124 PetriNetUnfolderBase]: 245/458 cut-off events. [2024-06-14 11:54:17,532 INFO L125 PetriNetUnfolderBase]: For 9425/9429 co-relation queries the response was YES. [2024-06-14 11:54:17,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2635 conditions, 458 events. 245/458 cut-off events. For 9425/9429 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1845 event pairs, 46 based on Foata normal form. 5/461 useless extension candidates. Maximal degree in co-relation 2588. Up to 386 conditions per place. [2024-06-14 11:54:17,540 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 65 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-14 11:54:17,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 872 flow [2024-06-14 11:54:17,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 11:54:17,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 11:54:17,541 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 666 flow. Second operand 8 states and 106 transitions. [2024-06-14 11:54:17,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 872 flow [2024-06-14 11:54:17,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 832 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:17,555 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 689 flow [2024-06-14 11:54:17,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-06-14 11:54:17,556 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2024-06-14 11:54:17,556 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 689 flow [2024-06-14 11:54:17,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:17,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:17,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:17,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:54:17,556 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:17,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2024210386, now seen corresponding path program 3 times [2024-06-14 11:54:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:17,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455341712] [2024-06-14 11:54:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:17,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:18,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:18,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455341712] [2024-06-14 11:54:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455341712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:18,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:18,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:18,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894898985] [2024-06-14 11:54:18,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:18,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:18,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:18,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:18,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 689 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:18,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:18,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:18,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:18,798 INFO L124 PetriNetUnfolderBase]: 267/490 cut-off events. [2024-06-14 11:54:18,798 INFO L125 PetriNetUnfolderBase]: For 10492/10492 co-relation queries the response was YES. [2024-06-14 11:54:18,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 490 events. 267/490 cut-off events. For 10492/10492 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1966 event pairs, 47 based on Foata normal form. 2/490 useless extension candidates. Maximal degree in co-relation 2863. Up to 383 conditions per place. [2024-06-14 11:54:18,803 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 68 selfloop transitions, 29 changer transitions 0/100 dead transitions. [2024-06-14 11:54:18,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 987 flow [2024-06-14 11:54:18,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 11:54:18,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 11:54:18,805 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 689 flow. Second operand 8 states and 106 transitions. [2024-06-14 11:54:18,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 987 flow [2024-06-14 11:54:18,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 100 transitions, 940 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:18,818 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 737 flow [2024-06-14 11:54:18,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=737, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2024-06-14 11:54:18,819 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2024-06-14 11:54:18,819 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 737 flow [2024-06-14 11:54:18,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:18,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:18,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:18,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:54:18,820 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:18,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash 725422373, now seen corresponding path program 3 times [2024-06-14 11:54:18,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:18,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226926448] [2024-06-14 11:54:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:18,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:19,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226926448] [2024-06-14 11:54:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226926448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:19,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:19,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:19,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893966677] [2024-06-14 11:54:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:19,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:19,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 737 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:19,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:19,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:19,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:20,090 INFO L124 PetriNetUnfolderBase]: 265/486 cut-off events. [2024-06-14 11:54:20,090 INFO L125 PetriNetUnfolderBase]: For 10867/10867 co-relation queries the response was YES. [2024-06-14 11:54:20,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 486 events. 265/486 cut-off events. For 10867/10867 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1936 event pairs, 44 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 2918. Up to 418 conditions per place. [2024-06-14 11:54:20,095 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 74 selfloop transitions, 21 changer transitions 0/98 dead transitions. [2024-06-14 11:54:20,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 98 transitions, 956 flow [2024-06-14 11:54:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 11:54:20,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2024-06-14 11:54:20,099 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 737 flow. Second operand 8 states and 101 transitions. [2024-06-14 11:54:20,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 98 transitions, 956 flow [2024-06-14 11:54:20,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 98 transitions, 869 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:20,117 INFO L231 Difference]: Finished difference. Result has 104 places, 88 transitions, 697 flow [2024-06-14 11:54:20,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=697, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2024-06-14 11:54:20,118 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2024-06-14 11:54:20,119 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 697 flow [2024-06-14 11:54:20,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:20,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:20,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:20,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:54:20,119 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:20,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash 63751060, now seen corresponding path program 2 times [2024-06-14 11:54:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016787556] [2024-06-14 11:54:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:21,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016787556] [2024-06-14 11:54:21,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016787556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:21,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:21,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:21,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732642619] [2024-06-14 11:54:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:21,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:21,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:21,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:21,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:21,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:21,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:21,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:21,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:21,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:21,525 INFO L124 PetriNetUnfolderBase]: 256/478 cut-off events. [2024-06-14 11:54:21,526 INFO L125 PetriNetUnfolderBase]: For 11978/11982 co-relation queries the response was YES. [2024-06-14 11:54:21,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2871 conditions, 478 events. 256/478 cut-off events. For 11978/11982 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1952 event pairs, 47 based on Foata normal form. 6/482 useless extension candidates. Maximal degree in co-relation 2820. Up to 408 conditions per place. [2024-06-14 11:54:21,531 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 72 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-06-14 11:54:21,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 98 transitions, 911 flow [2024-06-14 11:54:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 11:54:21,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 11:54:21,533 INFO L175 Difference]: Start difference. First operand has 104 places, 88 transitions, 697 flow. Second operand 8 states and 105 transitions. [2024-06-14 11:54:21,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 98 transitions, 911 flow [2024-06-14 11:54:21,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 98 transitions, 854 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:21,549 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 698 flow [2024-06-14 11:54:21,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2024-06-14 11:54:21,549 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2024-06-14 11:54:21,549 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 698 flow [2024-06-14 11:54:21,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:21,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:21,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:21,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:54:21,550 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:21,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:21,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1876608437, now seen corresponding path program 4 times [2024-06-14 11:54:21,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:21,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736879749] [2024-06-14 11:54:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:21,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:22,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736879749] [2024-06-14 11:54:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736879749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:22,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:22,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:22,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703552786] [2024-06-14 11:54:22,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:22,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:22,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:22,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:22,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 698 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:22,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:22,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:22,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:22,851 INFO L124 PetriNetUnfolderBase]: 274/501 cut-off events. [2024-06-14 11:54:22,851 INFO L125 PetriNetUnfolderBase]: For 12390/12390 co-relation queries the response was YES. [2024-06-14 11:54:22,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3065 conditions, 501 events. 274/501 cut-off events. For 12390/12390 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2006 event pairs, 50 based on Foata normal form. 1/498 useless extension candidates. Maximal degree in co-relation 3013. Up to 395 conditions per place. [2024-06-14 11:54:22,857 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 65 selfloop transitions, 35 changer transitions 0/103 dead transitions. [2024-06-14 11:54:22,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 103 transitions, 1021 flow [2024-06-14 11:54:22,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:22,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 11:54:22,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-06-14 11:54:22,858 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 698 flow. Second operand 8 states and 103 transitions. [2024-06-14 11:54:22,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 103 transitions, 1021 flow [2024-06-14 11:54:22,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 103 transitions, 983 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:22,877 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 787 flow [2024-06-14 11:54:22,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2024-06-14 11:54:22,878 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2024-06-14 11:54:22,878 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 787 flow [2024-06-14 11:54:22,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:22,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:22,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:22,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:54:22,879 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:22,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1885805207, now seen corresponding path program 5 times [2024-06-14 11:54:22,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:22,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11917239] [2024-06-14 11:54:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:22,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:23,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:23,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11917239] [2024-06-14 11:54:23,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11917239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:23,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:23,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:23,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425573104] [2024-06-14 11:54:23,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:23,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:23,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:23,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:23,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:23,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:23,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 787 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:23,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:23,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:23,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:24,158 INFO L124 PetriNetUnfolderBase]: 277/507 cut-off events. [2024-06-14 11:54:24,159 INFO L125 PetriNetUnfolderBase]: For 13438/13438 co-relation queries the response was YES. [2024-06-14 11:54:24,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3189 conditions, 507 events. 277/507 cut-off events. For 13438/13438 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2025 event pairs, 50 based on Foata normal form. 1/503 useless extension candidates. Maximal degree in co-relation 3136. Up to 422 conditions per place. [2024-06-14 11:54:24,164 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 76 selfloop transitions, 26 changer transitions 0/105 dead transitions. [2024-06-14 11:54:24,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 105 transitions, 1096 flow [2024-06-14 11:54:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 11:54:24,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-06-14 11:54:24,167 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 787 flow. Second operand 8 states and 103 transitions. [2024-06-14 11:54:24,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 105 transitions, 1096 flow [2024-06-14 11:54:24,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 105 transitions, 1044 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:24,184 INFO L231 Difference]: Finished difference. Result has 111 places, 96 transitions, 820 flow [2024-06-14 11:54:24,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=820, PETRI_PLACES=111, PETRI_TRANSITIONS=96} [2024-06-14 11:54:24,185 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2024-06-14 11:54:24,185 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 96 transitions, 820 flow [2024-06-14 11:54:24,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:24,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:24,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:24,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:54:24,185 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:24,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:24,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1424817532, now seen corresponding path program 3 times [2024-06-14 11:54:24,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:24,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745943514] [2024-06-14 11:54:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:24,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:25,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:25,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745943514] [2024-06-14 11:54:25,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745943514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:25,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:25,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294310045] [2024-06-14 11:54:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:25,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:25,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:25,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:25,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 96 transitions, 820 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:25,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:25,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:25,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:25,473 INFO L124 PetriNetUnfolderBase]: 268/500 cut-off events. [2024-06-14 11:54:25,473 INFO L125 PetriNetUnfolderBase]: For 14605/14606 co-relation queries the response was YES. [2024-06-14 11:54:25,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 500 events. 268/500 cut-off events. For 14605/14606 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2041 event pairs, 47 based on Foata normal form. 3/499 useless extension candidates. Maximal degree in co-relation 3121. Up to 412 conditions per place. [2024-06-14 11:54:25,482 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 20 changer transitions 0/106 dead transitions. [2024-06-14 11:54:25,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 106 transitions, 1048 flow [2024-06-14 11:54:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:25,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 11:54:25,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 11:54:25,484 INFO L175 Difference]: Start difference. First operand has 111 places, 96 transitions, 820 flow. Second operand 8 states and 106 transitions. [2024-06-14 11:54:25,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 106 transitions, 1048 flow [2024-06-14 11:54:25,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 106 transitions, 947 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:25,506 INFO L231 Difference]: Finished difference. Result has 112 places, 98 transitions, 792 flow [2024-06-14 11:54:25,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=792, PETRI_PLACES=112, PETRI_TRANSITIONS=98} [2024-06-14 11:54:25,512 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 80 predicate places. [2024-06-14 11:54:25,512 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 98 transitions, 792 flow [2024-06-14 11:54:25,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:25,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:25,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:25,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:54:25,513 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:25,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1424809813, now seen corresponding path program 6 times [2024-06-14 11:54:25,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:25,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877209069] [2024-06-14 11:54:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:25,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:26,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:26,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877209069] [2024-06-14 11:54:26,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877209069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:26,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:26,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202822076] [2024-06-14 11:54:26,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:26,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:26,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:26,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:26,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:26,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 98 transitions, 792 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:26,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:26,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:26,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:26,694 INFO L124 PetriNetUnfolderBase]: 281/514 cut-off events. [2024-06-14 11:54:26,694 INFO L125 PetriNetUnfolderBase]: For 14820/14820 co-relation queries the response was YES. [2024-06-14 11:54:26,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3243 conditions, 514 events. 281/514 cut-off events. For 14820/14820 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2078 event pairs, 50 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 3188. Up to 436 conditions per place. [2024-06-14 11:54:26,700 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 80 selfloop transitions, 23 changer transitions 0/106 dead transitions. [2024-06-14 11:54:26,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 106 transitions, 1021 flow [2024-06-14 11:54:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 11:54:26,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:54:26,701 INFO L175 Difference]: Start difference. First operand has 112 places, 98 transitions, 792 flow. Second operand 8 states and 100 transitions. [2024-06-14 11:54:26,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 106 transitions, 1021 flow [2024-06-14 11:54:26,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 106 transitions, 952 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:26,721 INFO L231 Difference]: Finished difference. Result has 114 places, 98 transitions, 774 flow [2024-06-14 11:54:26,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=774, PETRI_PLACES=114, PETRI_TRANSITIONS=98} [2024-06-14 11:54:26,724 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2024-06-14 11:54:26,725 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 98 transitions, 774 flow [2024-06-14 11:54:26,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:26,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:26,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:26,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:54:26,725 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:26,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:26,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1876608158, now seen corresponding path program 4 times [2024-06-14 11:54:26,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:26,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988461760] [2024-06-14 11:54:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:26,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:27,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:27,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988461760] [2024-06-14 11:54:27,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988461760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:27,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:27,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:27,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972605436] [2024-06-14 11:54:27,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:27,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:27,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:27,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:27,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:27,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 98 transitions, 774 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:27,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:27,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:27,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:27,999 INFO L124 PetriNetUnfolderBase]: 264/494 cut-off events. [2024-06-14 11:54:27,999 INFO L125 PetriNetUnfolderBase]: For 15177/15178 co-relation queries the response was YES. [2024-06-14 11:54:28,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3088 conditions, 494 events. 264/494 cut-off events. For 15177/15178 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2036 event pairs, 47 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 3032. Up to 387 conditions per place. [2024-06-14 11:54:28,002 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 66 selfloop transitions, 30 changer transitions 0/111 dead transitions. [2024-06-14 11:54:28,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 1032 flow [2024-06-14 11:54:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 11:54:28,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 11:54:28,009 INFO L175 Difference]: Start difference. First operand has 114 places, 98 transitions, 774 flow. Second operand 8 states and 108 transitions. [2024-06-14 11:54:28,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 1032 flow [2024-06-14 11:54:28,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 111 transitions, 981 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:28,031 INFO L231 Difference]: Finished difference. Result has 117 places, 104 transitions, 865 flow [2024-06-14 11:54:28,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=865, PETRI_PLACES=117, PETRI_TRANSITIONS=104} [2024-06-14 11:54:28,031 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 85 predicate places. [2024-06-14 11:54:28,031 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 104 transitions, 865 flow [2024-06-14 11:54:28,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:28,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:28,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:28,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 11:54:28,033 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:28,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:28,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1424809596, now seen corresponding path program 4 times [2024-06-14 11:54:28,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:28,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035814755] [2024-06-14 11:54:28,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:28,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:28,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035814755] [2024-06-14 11:54:28,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035814755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:28,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:28,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624706136] [2024-06-14 11:54:28,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:28,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:28,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:28,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:28,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:28,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:28,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 104 transitions, 865 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:28,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:28,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:28,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:29,048 INFO L124 PetriNetUnfolderBase]: 280/516 cut-off events. [2024-06-14 11:54:29,048 INFO L125 PetriNetUnfolderBase]: For 16565/16565 co-relation queries the response was YES. [2024-06-14 11:54:29,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 516 events. 280/516 cut-off events. For 16565/16565 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2112 event pairs, 56 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 3239. Up to 391 conditions per place. [2024-06-14 11:54:29,052 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 81 selfloop transitions, 32 changer transitions 0/116 dead transitions. [2024-06-14 11:54:29,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 116 transitions, 1209 flow [2024-06-14 11:54:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 11:54:29,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 11:54:29,053 INFO L175 Difference]: Start difference. First operand has 117 places, 104 transitions, 865 flow. Second operand 8 states and 105 transitions. [2024-06-14 11:54:29,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 116 transitions, 1209 flow [2024-06-14 11:54:29,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 116 transitions, 1162 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-14 11:54:29,076 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 923 flow [2024-06-14 11:54:29,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=923, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2024-06-14 11:54:29,077 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2024-06-14 11:54:29,077 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 923 flow [2024-06-14 11:54:29,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:29,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:29,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:29,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 11:54:29,078 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:29,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:29,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2024532766, now seen corresponding path program 5 times [2024-06-14 11:54:29,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:29,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465090180] [2024-06-14 11:54:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:29,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465090180] [2024-06-14 11:54:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465090180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:29,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:29,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:29,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485492463] [2024-06-14 11:54:29,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:29,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:29,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:29,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:29,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 923 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:29,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:29,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:29,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:29,983 INFO L124 PetriNetUnfolderBase]: 290/534 cut-off events. [2024-06-14 11:54:29,983 INFO L125 PetriNetUnfolderBase]: For 17860/17860 co-relation queries the response was YES. [2024-06-14 11:54:29,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 534 events. 290/534 cut-off events. For 17860/17860 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2200 event pairs, 45 based on Foata normal form. 2/534 useless extension candidates. Maximal degree in co-relation 3454. Up to 458 conditions per place. [2024-06-14 11:54:29,988 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 100 selfloop transitions, 24 changer transitions 0/127 dead transitions. [2024-06-14 11:54:29,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 127 transitions, 1272 flow [2024-06-14 11:54:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:54:29,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:54:29,990 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 923 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:54:29,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 127 transitions, 1272 flow [2024-06-14 11:54:30,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 127 transitions, 1173 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:30,014 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 948 flow [2024-06-14 11:54:30,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=948, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-06-14 11:54:30,015 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-06-14 11:54:30,015 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 948 flow [2024-06-14 11:54:30,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:30,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:30,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:30,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 11:54:30,016 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:30,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1916337698, now seen corresponding path program 6 times [2024-06-14 11:54:30,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:30,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204239277] [2024-06-14 11:54:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:30,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:30,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204239277] [2024-06-14 11:54:30,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204239277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:30,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:30,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:30,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674320576] [2024-06-14 11:54:30,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:30,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:30,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:30,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:30,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:30,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:30,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 948 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:30,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:30,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:30,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:30,952 INFO L124 PetriNetUnfolderBase]: 304/560 cut-off events. [2024-06-14 11:54:30,952 INFO L125 PetriNetUnfolderBase]: For 18948/18948 co-relation queries the response was YES. [2024-06-14 11:54:30,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3653 conditions, 560 events. 304/560 cut-off events. For 18948/18948 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2354 event pairs, 45 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3590. Up to 475 conditions per place. [2024-06-14 11:54:30,956 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 102 selfloop transitions, 27 changer transitions 0/132 dead transitions. [2024-06-14 11:54:30,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 1323 flow [2024-06-14 11:54:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:30,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:30,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:54:30,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:54:30,958 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 948 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:54:30,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 1323 flow [2024-06-14 11:54:30,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 132 transitions, 1250 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:30,984 INFO L231 Difference]: Finished difference. Result has 130 places, 117 transitions, 1021 flow [2024-06-14 11:54:30,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1021, PETRI_PLACES=130, PETRI_TRANSITIONS=117} [2024-06-14 11:54:30,985 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-14 11:54:30,985 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 117 transitions, 1021 flow [2024-06-14 11:54:30,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:30,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:30,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:30,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 11:54:30,986 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:30,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:30,986 INFO L85 PathProgramCache]: Analyzing trace with hash -539878174, now seen corresponding path program 7 times [2024-06-14 11:54:30,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:30,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133135222] [2024-06-14 11:54:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:30,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:31,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:31,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133135222] [2024-06-14 11:54:31,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133135222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:31,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:31,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:31,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709009944] [2024-06-14 11:54:31,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:31,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:31,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:31,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:31,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:31,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:31,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 117 transitions, 1021 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:31,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:31,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:31,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:31,974 INFO L124 PetriNetUnfolderBase]: 300/554 cut-off events. [2024-06-14 11:54:31,975 INFO L125 PetriNetUnfolderBase]: For 18895/18895 co-relation queries the response was YES. [2024-06-14 11:54:31,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3572 conditions, 554 events. 300/554 cut-off events. For 18895/18895 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2329 event pairs, 45 based on Foata normal form. 2/554 useless extension candidates. Maximal degree in co-relation 3507. Up to 469 conditions per place. [2024-06-14 11:54:31,979 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 103 selfloop transitions, 26 changer transitions 0/132 dead transitions. [2024-06-14 11:54:31,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 132 transitions, 1332 flow [2024-06-14 11:54:31,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:54:31,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:54:31,981 INFO L175 Difference]: Start difference. First operand has 130 places, 117 transitions, 1021 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:54:31,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 132 transitions, 1332 flow [2024-06-14 11:54:32,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 132 transitions, 1256 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:32,007 INFO L231 Difference]: Finished difference. Result has 135 places, 118 transitions, 1020 flow [2024-06-14 11:54:32,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1020, PETRI_PLACES=135, PETRI_TRANSITIONS=118} [2024-06-14 11:54:32,008 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-14 11:54:32,008 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 118 transitions, 1020 flow [2024-06-14 11:54:32,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:32,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:32,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:32,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 11:54:32,008 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:32,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1434352636, now seen corresponding path program 1 times [2024-06-14 11:54:32,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:32,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323502054] [2024-06-14 11:54:32,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:32,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:33,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:33,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323502054] [2024-06-14 11:54:33,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323502054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:33,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:33,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:33,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705589990] [2024-06-14 11:54:33,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:33,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:33,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:33,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:33,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:33,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:33,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 118 transitions, 1020 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:33,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:33,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:33,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:33,590 INFO L124 PetriNetUnfolderBase]: 280/529 cut-off events. [2024-06-14 11:54:33,590 INFO L125 PetriNetUnfolderBase]: For 19043/19045 co-relation queries the response was YES. [2024-06-14 11:54:33,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 529 events. 280/529 cut-off events. For 19043/19045 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2266 event pairs, 51 based on Foata normal form. 4/528 useless extension candidates. Maximal degree in co-relation 3265. Up to 449 conditions per place. [2024-06-14 11:54:33,593 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 96 selfloop transitions, 13 changer transitions 0/126 dead transitions. [2024-06-14 11:54:33,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 126 transitions, 1256 flow [2024-06-14 11:54:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 11:54:33,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-06-14 11:54:33,594 INFO L175 Difference]: Start difference. First operand has 135 places, 118 transitions, 1020 flow. Second operand 8 states and 103 transitions. [2024-06-14 11:54:33,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 126 transitions, 1256 flow [2024-06-14 11:54:33,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 126 transitions, 1173 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:33,615 INFO L231 Difference]: Finished difference. Result has 137 places, 118 transitions, 967 flow [2024-06-14 11:54:33,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=967, PETRI_PLACES=137, PETRI_TRANSITIONS=118} [2024-06-14 11:54:33,615 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-14 11:54:33,616 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 118 transitions, 967 flow [2024-06-14 11:54:33,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:33,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:33,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:33,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 11:54:33,616 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:33,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:33,616 INFO L85 PathProgramCache]: Analyzing trace with hash 835999706, now seen corresponding path program 1 times [2024-06-14 11:54:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:33,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526396655] [2024-06-14 11:54:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:33,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:34,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:34,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526396655] [2024-06-14 11:54:34,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526396655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:34,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:34,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777531743] [2024-06-14 11:54:34,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:34,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:34,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:34,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 118 transitions, 967 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:34,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:34,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:34,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:35,149 INFO L124 PetriNetUnfolderBase]: 295/546 cut-off events. [2024-06-14 11:54:35,149 INFO L125 PetriNetUnfolderBase]: For 18099/18099 co-relation queries the response was YES. [2024-06-14 11:54:35,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 546 events. 295/546 cut-off events. For 18099/18099 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2290 event pairs, 43 based on Foata normal form. 1/545 useless extension candidates. Maximal degree in co-relation 3316. Up to 446 conditions per place. [2024-06-14 11:54:35,154 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 104 selfloop transitions, 30 changer transitions 0/137 dead transitions. [2024-06-14 11:54:35,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 137 transitions, 1317 flow [2024-06-14 11:54:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:35,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 11:54:35,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-14 11:54:35,155 INFO L175 Difference]: Start difference. First operand has 137 places, 118 transitions, 967 flow. Second operand 9 states and 118 transitions. [2024-06-14 11:54:35,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 137 transitions, 1317 flow [2024-06-14 11:54:35,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 137 transitions, 1285 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:35,187 INFO L231 Difference]: Finished difference. Result has 140 places, 120 transitions, 1040 flow [2024-06-14 11:54:35,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1040, PETRI_PLACES=140, PETRI_TRANSITIONS=120} [2024-06-14 11:54:35,188 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-14 11:54:35,188 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 120 transitions, 1040 flow [2024-06-14 11:54:35,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:35,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:35,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:35,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 11:54:35,189 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:35,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:35,189 INFO L85 PathProgramCache]: Analyzing trace with hash 840588512, now seen corresponding path program 1 times [2024-06-14 11:54:35,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253642519] [2024-06-14 11:54:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:35,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:36,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:36,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253642519] [2024-06-14 11:54:36,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253642519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:36,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:36,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:36,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432701231] [2024-06-14 11:54:36,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:36,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:36,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:36,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:36,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 120 transitions, 1040 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:36,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:36,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:36,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:36,617 INFO L124 PetriNetUnfolderBase]: 301/556 cut-off events. [2024-06-14 11:54:36,617 INFO L125 PetriNetUnfolderBase]: For 19812/19812 co-relation queries the response was YES. [2024-06-14 11:54:36,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3518 conditions, 556 events. 301/556 cut-off events. For 19812/19812 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2332 event pairs, 40 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3450. Up to 435 conditions per place. [2024-06-14 11:54:36,620 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 98 selfloop transitions, 37 changer transitions 0/138 dead transitions. [2024-06-14 11:54:36,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 138 transitions, 1378 flow [2024-06-14 11:54:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:54:36,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:54:36,629 INFO L175 Difference]: Start difference. First operand has 140 places, 120 transitions, 1040 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:54:36,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 138 transitions, 1378 flow [2024-06-14 11:54:36,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 1289 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:36,660 INFO L231 Difference]: Finished difference. Result has 142 places, 123 transitions, 1068 flow [2024-06-14 11:54:36,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1068, PETRI_PLACES=142, PETRI_TRANSITIONS=123} [2024-06-14 11:54:36,661 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-14 11:54:36,662 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 123 transitions, 1068 flow [2024-06-14 11:54:36,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:36,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:36,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:36,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 11:54:36,662 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:36,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2129360314, now seen corresponding path program 1 times [2024-06-14 11:54:36,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:36,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551522338] [2024-06-14 11:54:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:36,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:37,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:37,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551522338] [2024-06-14 11:54:37,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551522338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:37,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:37,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256078483] [2024-06-14 11:54:37,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:37,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:37,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:37,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:37,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:37,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:37,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 123 transitions, 1068 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:37,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:37,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:37,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:37,968 INFO L124 PetriNetUnfolderBase]: 307/566 cut-off events. [2024-06-14 11:54:37,968 INFO L125 PetriNetUnfolderBase]: For 21164/21164 co-relation queries the response was YES. [2024-06-14 11:54:37,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3659 conditions, 566 events. 307/566 cut-off events. For 21164/21164 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2393 event pairs, 43 based on Foata normal form. 2/566 useless extension candidates. Maximal degree in co-relation 3590. Up to 492 conditions per place. [2024-06-14 11:54:37,973 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 112 selfloop transitions, 23 changer transitions 0/138 dead transitions. [2024-06-14 11:54:37,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 138 transitions, 1398 flow [2024-06-14 11:54:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:54:37,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-14 11:54:37,983 INFO L175 Difference]: Start difference. First operand has 142 places, 123 transitions, 1068 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:54:37,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 138 transitions, 1398 flow [2024-06-14 11:54:38,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 138 transitions, 1309 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:38,017 INFO L231 Difference]: Finished difference. Result has 144 places, 125 transitions, 1056 flow [2024-06-14 11:54:38,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1056, PETRI_PLACES=144, PETRI_TRANSITIONS=125} [2024-06-14 11:54:38,017 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 112 predicate places. [2024-06-14 11:54:38,017 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 125 transitions, 1056 flow [2024-06-14 11:54:38,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:38,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:38,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:38,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 11:54:38,018 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:38,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:38,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2129360562, now seen corresponding path program 2 times [2024-06-14 11:54:38,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:38,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563371764] [2024-06-14 11:54:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:38,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:39,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:39,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563371764] [2024-06-14 11:54:39,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563371764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:39,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:39,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:39,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916160718] [2024-06-14 11:54:39,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:39,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:39,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:39,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:39,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:39,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:39,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 125 transitions, 1056 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:39,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:39,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:39,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:39,665 INFO L124 PetriNetUnfolderBase]: 320/587 cut-off events. [2024-06-14 11:54:39,665 INFO L125 PetriNetUnfolderBase]: For 22990/22990 co-relation queries the response was YES. [2024-06-14 11:54:39,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3860 conditions, 587 events. 320/587 cut-off events. For 22990/22990 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2511 event pairs, 41 based on Foata normal form. 1/586 useless extension candidates. Maximal degree in co-relation 3790. Up to 439 conditions per place. [2024-06-14 11:54:39,670 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 98 selfloop transitions, 43 changer transitions 0/144 dead transitions. [2024-06-14 11:54:39,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 144 transitions, 1504 flow [2024-06-14 11:54:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 11:54:39,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-14 11:54:39,671 INFO L175 Difference]: Start difference. First operand has 144 places, 125 transitions, 1056 flow. Second operand 9 states and 118 transitions. [2024-06-14 11:54:39,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 144 transitions, 1504 flow [2024-06-14 11:54:39,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 144 transitions, 1443 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:39,698 INFO L231 Difference]: Finished difference. Result has 147 places, 130 transitions, 1160 flow [2024-06-14 11:54:39,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1160, PETRI_PLACES=147, PETRI_TRANSITIONS=130} [2024-06-14 11:54:39,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2024-06-14 11:54:39,699 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 130 transitions, 1160 flow [2024-06-14 11:54:39,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:39,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:39,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:39,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 11:54:39,700 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:39,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2129367072, now seen corresponding path program 3 times [2024-06-14 11:54:39,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:39,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188299746] [2024-06-14 11:54:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:39,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:40,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:40,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188299746] [2024-06-14 11:54:40,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188299746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:40,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:40,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:40,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383756621] [2024-06-14 11:54:40,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:40,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:40,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:40,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 130 transitions, 1160 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:40,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:40,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:40,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:40,910 INFO L124 PetriNetUnfolderBase]: 316/581 cut-off events. [2024-06-14 11:54:40,910 INFO L125 PetriNetUnfolderBase]: For 23816/23816 co-relation queries the response was YES. [2024-06-14 11:54:40,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3918 conditions, 581 events. 316/581 cut-off events. For 23816/23816 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2485 event pairs, 41 based on Foata normal form. 2/581 useless extension candidates. Maximal degree in co-relation 3846. Up to 459 conditions per place. [2024-06-14 11:54:40,914 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 104 selfloop transitions, 37 changer transitions 0/144 dead transitions. [2024-06-14 11:54:40,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 1492 flow [2024-06-14 11:54:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:54:40,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:54:40,915 INFO L175 Difference]: Start difference. First operand has 147 places, 130 transitions, 1160 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:54:40,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 1492 flow [2024-06-14 11:54:40,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1414 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:40,948 INFO L231 Difference]: Finished difference. Result has 151 places, 130 transitions, 1162 flow [2024-06-14 11:54:40,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1162, PETRI_PLACES=151, PETRI_TRANSITIONS=130} [2024-06-14 11:54:40,948 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2024-06-14 11:54:40,949 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 130 transitions, 1162 flow [2024-06-14 11:54:40,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:40,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:40,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:40,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 11:54:40,949 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:40,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1013251382, now seen corresponding path program 4 times [2024-06-14 11:54:40,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:40,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317259724] [2024-06-14 11:54:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:40,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:41,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:41,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317259724] [2024-06-14 11:54:41,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317259724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:41,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:41,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:41,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284066657] [2024-06-14 11:54:41,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:42,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:42,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 130 transitions, 1162 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:42,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:42,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:42,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:42,286 INFO L124 PetriNetUnfolderBase]: 322/591 cut-off events. [2024-06-14 11:54:42,286 INFO L125 PetriNetUnfolderBase]: For 25046/25046 co-relation queries the response was YES. [2024-06-14 11:54:42,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4051 conditions, 591 events. 322/591 cut-off events. For 25046/25046 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2559 event pairs, 45 based on Foata normal form. 2/591 useless extension candidates. Maximal degree in co-relation 3977. Up to 452 conditions per place. [2024-06-14 11:54:42,290 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 101 selfloop transitions, 41 changer transitions 0/145 dead transitions. [2024-06-14 11:54:42,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 145 transitions, 1532 flow [2024-06-14 11:54:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 11:54:42,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-14 11:54:42,292 INFO L175 Difference]: Start difference. First operand has 151 places, 130 transitions, 1162 flow. Second operand 9 states and 116 transitions. [2024-06-14 11:54:42,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 145 transitions, 1532 flow [2024-06-14 11:54:42,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 1438 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:42,323 INFO L231 Difference]: Finished difference. Result has 152 places, 133 transitions, 1204 flow [2024-06-14 11:54:42,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1204, PETRI_PLACES=152, PETRI_TRANSITIONS=133} [2024-06-14 11:54:42,323 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 120 predicate places. [2024-06-14 11:54:42,324 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 133 transitions, 1204 flow [2024-06-14 11:54:42,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:42,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:42,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:42,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 11:54:42,324 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:42,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:42,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1956870424, now seen corresponding path program 2 times [2024-06-14 11:54:42,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:42,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541747242] [2024-06-14 11:54:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:42,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:43,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541747242] [2024-06-14 11:54:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541747242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:43,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936534759] [2024-06-14 11:54:43,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:43,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:43,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:43,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:43,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:43,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:43,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 133 transitions, 1204 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:43,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:43,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:43,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:43,719 INFO L124 PetriNetUnfolderBase]: 328/601 cut-off events. [2024-06-14 11:54:43,719 INFO L125 PetriNetUnfolderBase]: For 26447/26447 co-relation queries the response was YES. [2024-06-14 11:54:43,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 601 events. 328/601 cut-off events. For 26447/26447 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2597 event pairs, 43 based on Foata normal form. 2/601 useless extension candidates. Maximal degree in co-relation 4106. Up to 516 conditions per place. [2024-06-14 11:54:43,723 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 117 selfloop transitions, 26 changer transitions 0/146 dead transitions. [2024-06-14 11:54:43,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 146 transitions, 1548 flow [2024-06-14 11:54:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 11:54:43,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-14 11:54:43,725 INFO L175 Difference]: Start difference. First operand has 152 places, 133 transitions, 1204 flow. Second operand 9 states and 112 transitions. [2024-06-14 11:54:43,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 146 transitions, 1548 flow [2024-06-14 11:54:43,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 146 transitions, 1434 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:43,756 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 1177 flow [2024-06-14 11:54:43,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1177, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2024-06-14 11:54:43,756 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2024-06-14 11:54:43,756 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 1177 flow [2024-06-14 11:54:43,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:43,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:43,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:43,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 11:54:43,766 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:43,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1293589560, now seen corresponding path program 5 times [2024-06-14 11:54:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762967967] [2024-06-14 11:54:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:44,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:44,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762967967] [2024-06-14 11:54:44,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762967967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:44,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:44,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:44,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538594579] [2024-06-14 11:54:44,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:44,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:44,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:44,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:44,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 1177 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:44,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:44,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:44,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:45,117 INFO L124 PetriNetUnfolderBase]: 336/614 cut-off events. [2024-06-14 11:54:45,117 INFO L125 PetriNetUnfolderBase]: For 27593/27593 co-relation queries the response was YES. [2024-06-14 11:54:45,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 614 events. 336/614 cut-off events. For 27593/27593 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2654 event pairs, 45 based on Foata normal form. 1/613 useless extension candidates. Maximal degree in co-relation 4212. Up to 427 conditions per place. [2024-06-14 11:54:45,121 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 92 selfloop transitions, 56 changer transitions 0/151 dead transitions. [2024-06-14 11:54:45,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 151 transitions, 1651 flow [2024-06-14 11:54:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 11:54:45,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-14 11:54:45,122 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 1177 flow. Second operand 9 states and 118 transitions. [2024-06-14 11:54:45,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 151 transitions, 1651 flow [2024-06-14 11:54:45,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 151 transitions, 1580 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:45,156 INFO L231 Difference]: Finished difference. Result has 157 places, 139 transitions, 1312 flow [2024-06-14 11:54:45,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1312, PETRI_PLACES=157, PETRI_TRANSITIONS=139} [2024-06-14 11:54:45,156 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 125 predicate places. [2024-06-14 11:54:45,156 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 139 transitions, 1312 flow [2024-06-14 11:54:45,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:45,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:45,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:45,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 11:54:45,157 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:45,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1956870672, now seen corresponding path program 6 times [2024-06-14 11:54:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998347147] [2024-06-14 11:54:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:46,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:46,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998347147] [2024-06-14 11:54:46,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998347147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:46,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:46,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:46,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140546960] [2024-06-14 11:54:46,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:46,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:46,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:46,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:46,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:46,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:46,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 139 transitions, 1312 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:46,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:46,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:46,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:46,513 INFO L124 PetriNetUnfolderBase]: 334/611 cut-off events. [2024-06-14 11:54:46,513 INFO L125 PetriNetUnfolderBase]: For 28291/28291 co-relation queries the response was YES. [2024-06-14 11:54:46,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4416 conditions, 611 events. 334/611 cut-off events. For 28291/28291 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2645 event pairs, 45 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 4338. Up to 466 conditions per place. [2024-06-14 11:54:46,518 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 104 selfloop transitions, 44 changer transitions 0/151 dead transitions. [2024-06-14 11:54:46,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 151 transitions, 1664 flow [2024-06-14 11:54:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 11:54:46,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-14 11:54:46,520 INFO L175 Difference]: Start difference. First operand has 157 places, 139 transitions, 1312 flow. Second operand 9 states and 118 transitions. [2024-06-14 11:54:46,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 151 transitions, 1664 flow [2024-06-14 11:54:46,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 1586 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:46,557 INFO L231 Difference]: Finished difference. Result has 161 places, 139 transitions, 1327 flow [2024-06-14 11:54:46,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1327, PETRI_PLACES=161, PETRI_TRANSITIONS=139} [2024-06-14 11:54:46,557 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2024-06-14 11:54:46,557 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 139 transitions, 1327 flow [2024-06-14 11:54:46,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:46,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:46,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:46,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 11:54:46,558 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:46,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1013497150, now seen corresponding path program 3 times [2024-06-14 11:54:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796264499] [2024-06-14 11:54:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:46,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:47,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:47,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796264499] [2024-06-14 11:54:47,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796264499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:47,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:47,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:47,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497243107] [2024-06-14 11:54:47,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:47,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:47,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:47,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:47,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:47,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 139 transitions, 1327 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:47,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:47,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:47,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:47,725 INFO L124 PetriNetUnfolderBase]: 356/647 cut-off events. [2024-06-14 11:54:47,726 INFO L125 PetriNetUnfolderBase]: For 33668/33668 co-relation queries the response was YES. [2024-06-14 11:54:47,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 647 events. 356/647 cut-off events. For 33668/33668 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2852 event pairs, 41 based on Foata normal form. 2/647 useless extension candidates. Maximal degree in co-relation 4793. Up to 520 conditions per place. [2024-06-14 11:54:47,730 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 117 selfloop transitions, 37 changer transitions 0/157 dead transitions. [2024-06-14 11:54:47,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 157 transitions, 1847 flow [2024-06-14 11:54:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 11:54:47,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-14 11:54:47,731 INFO L175 Difference]: Start difference. First operand has 161 places, 139 transitions, 1327 flow. Second operand 9 states and 116 transitions. [2024-06-14 11:54:47,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 157 transitions, 1847 flow [2024-06-14 11:54:47,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 157 transitions, 1690 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:47,778 INFO L231 Difference]: Finished difference. Result has 162 places, 144 transitions, 1350 flow [2024-06-14 11:54:47,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1350, PETRI_PLACES=162, PETRI_TRANSITIONS=144} [2024-06-14 11:54:47,779 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 130 predicate places. [2024-06-14 11:54:47,779 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 1350 flow [2024-06-14 11:54:47,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:47,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:47,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:47,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 11:54:47,780 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:47,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:47,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1013497460, now seen corresponding path program 1 times [2024-06-14 11:54:47,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:47,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264838361] [2024-06-14 11:54:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:47,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:48,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:48,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264838361] [2024-06-14 11:54:48,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264838361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:48,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:48,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:48,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086338281] [2024-06-14 11:54:48,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:48,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:48,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:48,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:49,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:54:49,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 144 transitions, 1350 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:49,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:49,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:54:49,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:49,377 INFO L124 PetriNetUnfolderBase]: 329/616 cut-off events. [2024-06-14 11:54:49,377 INFO L125 PetriNetUnfolderBase]: For 34051/34053 co-relation queries the response was YES. [2024-06-14 11:54:49,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4588 conditions, 616 events. 329/616 cut-off events. For 34051/34053 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2774 event pairs, 42 based on Foata normal form. 3/616 useless extension candidates. Maximal degree in co-relation 4507. Up to 510 conditions per place. [2024-06-14 11:54:49,382 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 114 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-14 11:54:49,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 155 transitions, 1657 flow [2024-06-14 11:54:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:54:49,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:54:49,383 INFO L175 Difference]: Start difference. First operand has 162 places, 144 transitions, 1350 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:54:49,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 155 transitions, 1657 flow [2024-06-14 11:54:49,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 155 transitions, 1588 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:49,426 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1343 flow [2024-06-14 11:54:49,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1343, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-14 11:54:49,426 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-06-14 11:54:49,426 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1343 flow [2024-06-14 11:54:49,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:49,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:49,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:49,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 11:54:49,427 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:49,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1013488780, now seen corresponding path program 4 times [2024-06-14 11:54:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:49,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285829781] [2024-06-14 11:54:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:49,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:50,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:50,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285829781] [2024-06-14 11:54:50,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285829781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:50,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:50,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:50,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668615255] [2024-06-14 11:54:50,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:50,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:50,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:50,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:50,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:50,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:50,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1343 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:50,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:50,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:50,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:50,806 INFO L124 PetriNetUnfolderBase]: 351/639 cut-off events. [2024-06-14 11:54:50,806 INFO L125 PetriNetUnfolderBase]: For 33277/33277 co-relation queries the response was YES. [2024-06-14 11:54:50,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4717 conditions, 639 events. 351/639 cut-off events. For 33277/33277 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2794 event pairs, 41 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 4634. Up to 534 conditions per place. [2024-06-14 11:54:50,811 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 125 selfloop transitions, 34 changer transitions 0/162 dead transitions. [2024-06-14 11:54:50,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 162 transitions, 1747 flow [2024-06-14 11:54:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 11:54:50,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 11:54:50,812 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1343 flow. Second operand 9 states and 114 transitions. [2024-06-14 11:54:50,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 162 transitions, 1747 flow [2024-06-14 11:54:50,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 162 transitions, 1682 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:50,864 INFO L231 Difference]: Finished difference. Result has 170 places, 152 transitions, 1441 flow [2024-06-14 11:54:50,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1441, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2024-06-14 11:54:50,865 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 138 predicate places. [2024-06-14 11:54:50,865 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 1441 flow [2024-06-14 11:54:50,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:50,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:50,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:50,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 11:54:50,866 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:50,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:50,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1334338822, now seen corresponding path program 5 times [2024-06-14 11:54:50,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:50,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263484564] [2024-06-14 11:54:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:50,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:52,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:52,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263484564] [2024-06-14 11:54:52,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263484564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:52,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:52,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:52,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349868925] [2024-06-14 11:54:52,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:52,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:52,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:52,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:52,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 1441 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:52,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:52,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:52,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:52,827 INFO L124 PetriNetUnfolderBase]: 354/644 cut-off events. [2024-06-14 11:54:52,827 INFO L125 PetriNetUnfolderBase]: For 35009/35009 co-relation queries the response was YES. [2024-06-14 11:54:52,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4845 conditions, 644 events. 354/644 cut-off events. For 35009/35009 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2834 event pairs, 50 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 4759. Up to 598 conditions per place. [2024-06-14 11:54:52,832 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 143 selfloop transitions, 16 changer transitions 0/162 dead transitions. [2024-06-14 11:54:52,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 162 transitions, 1807 flow [2024-06-14 11:54:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:54:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:54:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:54:52,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-14 11:54:52,833 INFO L175 Difference]: Start difference. First operand has 170 places, 152 transitions, 1441 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:54:52,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 162 transitions, 1807 flow [2024-06-14 11:54:52,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 162 transitions, 1751 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:52,896 INFO L231 Difference]: Finished difference. Result has 176 places, 154 transitions, 1456 flow [2024-06-14 11:54:52,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1456, PETRI_PLACES=176, PETRI_TRANSITIONS=154} [2024-06-14 11:54:52,896 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 144 predicate places. [2024-06-14 11:54:52,896 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 154 transitions, 1456 flow [2024-06-14 11:54:52,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:52,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:52,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:52,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 11:54:52,897 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:52,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1954681406, now seen corresponding path program 7 times [2024-06-14 11:54:52,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:52,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080048728] [2024-06-14 11:54:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:52,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:53,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:53,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080048728] [2024-06-14 11:54:53,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080048728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:53,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:53,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:53,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298769150] [2024-06-14 11:54:53,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:53,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:53,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:53,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:54,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:54,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 154 transitions, 1456 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:54,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:54,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:54,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:54,246 INFO L124 PetriNetUnfolderBase]: 362/657 cut-off events. [2024-06-14 11:54:54,246 INFO L125 PetriNetUnfolderBase]: For 37598/37598 co-relation queries the response was YES. [2024-06-14 11:54:54,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5041 conditions, 657 events. 362/657 cut-off events. For 37598/37598 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2908 event pairs, 52 based on Foata normal form. 1/653 useless extension candidates. Maximal degree in co-relation 4953. Up to 423 conditions per place. [2024-06-14 11:54:54,251 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 95 selfloop transitions, 71 changer transitions 0/169 dead transitions. [2024-06-14 11:54:54,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 169 transitions, 2004 flow [2024-06-14 11:54:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:54,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 11:54:54,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-14 11:54:54,252 INFO L175 Difference]: Start difference. First operand has 176 places, 154 transitions, 1456 flow. Second operand 9 states and 118 transitions. [2024-06-14 11:54:54,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 169 transitions, 2004 flow [2024-06-14 11:54:54,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 169 transitions, 1925 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 11:54:54,315 INFO L231 Difference]: Finished difference. Result has 176 places, 159 transitions, 1657 flow [2024-06-14 11:54:54,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1657, PETRI_PLACES=176, PETRI_TRANSITIONS=159} [2024-06-14 11:54:54,315 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 144 predicate places. [2024-06-14 11:54:54,315 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 159 transitions, 1657 flow [2024-06-14 11:54:54,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:54,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:54,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:54,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 11:54:54,316 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:54,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1954681654, now seen corresponding path program 6 times [2024-06-14 11:54:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:54,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599883344] [2024-06-14 11:54:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:54,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:55,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:55,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599883344] [2024-06-14 11:54:55,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599883344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:55,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:55,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940945261] [2024-06-14 11:54:55,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:55,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:55,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:55,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:55,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 159 transitions, 1657 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:55,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:55,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:55,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:55,637 INFO L124 PetriNetUnfolderBase]: 370/670 cut-off events. [2024-06-14 11:54:55,637 INFO L125 PetriNetUnfolderBase]: For 41113/41113 co-relation queries the response was YES. [2024-06-14 11:54:55,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5460 conditions, 670 events. 370/670 cut-off events. For 41113/41113 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2968 event pairs, 47 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 5372. Up to 508 conditions per place. [2024-06-14 11:54:55,643 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 118 selfloop transitions, 54 changer transitions 0/175 dead transitions. [2024-06-14 11:54:55,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 175 transitions, 2321 flow [2024-06-14 11:54:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:54:55,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:54:55,645 INFO L175 Difference]: Start difference. First operand has 176 places, 159 transitions, 1657 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:54:55,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 175 transitions, 2321 flow [2024-06-14 11:54:55,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 175 transitions, 2232 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:55,715 INFO L231 Difference]: Finished difference. Result has 180 places, 165 transitions, 1787 flow [2024-06-14 11:54:55,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1787, PETRI_PLACES=180, PETRI_TRANSITIONS=165} [2024-06-14 11:54:55,715 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-14 11:54:55,716 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 165 transitions, 1787 flow [2024-06-14 11:54:55,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:55,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:55,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:55,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 11:54:55,716 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:55,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:55,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1954690024, now seen corresponding path program 7 times [2024-06-14 11:54:55,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:55,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108128530] [2024-06-14 11:54:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:55,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:56,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:56,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108128530] [2024-06-14 11:54:56,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108128530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:56,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:56,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:56,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858821476] [2024-06-14 11:54:56,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:56,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:56,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:56,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:56,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 165 transitions, 1787 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:56,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:56,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:56,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:57,049 INFO L124 PetriNetUnfolderBase]: 368/667 cut-off events. [2024-06-14 11:54:57,049 INFO L125 PetriNetUnfolderBase]: For 41335/41335 co-relation queries the response was YES. [2024-06-14 11:54:57,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5492 conditions, 667 events. 368/667 cut-off events. For 41335/41335 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2974 event pairs, 47 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 5402. Up to 506 conditions per place. [2024-06-14 11:54:57,055 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 118 selfloop transitions, 53 changer transitions 0/174 dead transitions. [2024-06-14 11:54:57,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 174 transitions, 2249 flow [2024-06-14 11:54:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:54:57,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:54:57,057 INFO L175 Difference]: Start difference. First operand has 180 places, 165 transitions, 1787 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:54:57,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 174 transitions, 2249 flow [2024-06-14 11:54:57,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 174 transitions, 2149 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:57,131 INFO L231 Difference]: Finished difference. Result has 185 places, 165 transitions, 1798 flow [2024-06-14 11:54:57,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1798, PETRI_PLACES=185, PETRI_TRANSITIONS=165} [2024-06-14 11:54:57,132 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2024-06-14 11:54:57,132 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 165 transitions, 1798 flow [2024-06-14 11:54:57,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:57,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:57,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:57,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 11:54:57,133 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:57,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1669590154, now seen corresponding path program 8 times [2024-06-14 11:54:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:57,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837297635] [2024-06-14 11:54:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:57,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:58,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:58,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837297635] [2024-06-14 11:54:58,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837297635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:58,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:58,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:58,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831737688] [2024-06-14 11:54:58,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:58,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:58,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:58,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:58,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:58,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 165 transitions, 1798 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:58,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:58,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:58,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:58,344 INFO L124 PetriNetUnfolderBase]: 379/685 cut-off events. [2024-06-14 11:54:58,344 INFO L125 PetriNetUnfolderBase]: For 45137/45137 co-relation queries the response was YES. [2024-06-14 11:54:58,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5687 conditions, 685 events. 379/685 cut-off events. For 45137/45137 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3070 event pairs, 48 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 5595. Up to 566 conditions per place. [2024-06-14 11:54:58,352 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 140 selfloop transitions, 37 changer transitions 0/180 dead transitions. [2024-06-14 11:54:58,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 180 transitions, 2392 flow [2024-06-14 11:54:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:58,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 11:54:58,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-14 11:54:58,353 INFO L175 Difference]: Start difference. First operand has 185 places, 165 transitions, 1798 flow. Second operand 9 states and 116 transitions. [2024-06-14 11:54:58,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 180 transitions, 2392 flow [2024-06-14 11:54:58,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 180 transitions, 2270 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:58,435 INFO L231 Difference]: Finished difference. Result has 186 places, 170 transitions, 1865 flow [2024-06-14 11:54:58,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1865, PETRI_PLACES=186, PETRI_TRANSITIONS=170} [2024-06-14 11:54:58,435 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2024-06-14 11:54:58,435 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 170 transitions, 1865 flow [2024-06-14 11:54:58,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:58,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:58,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:58,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 11:54:58,436 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:58,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1669350896, now seen corresponding path program 8 times [2024-06-14 11:54:58,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:58,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217201054] [2024-06-14 11:54:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:58,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:59,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:59,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217201054] [2024-06-14 11:54:59,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217201054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:59,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:59,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:54:59,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069701668] [2024-06-14 11:54:59,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:59,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:54:59,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:59,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:54:59,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:54:59,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:54:59,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 170 transitions, 1865 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:59,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:59,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:54:59,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:59,770 INFO L124 PetriNetUnfolderBase]: 387/698 cut-off events. [2024-06-14 11:54:59,770 INFO L125 PetriNetUnfolderBase]: For 47251/47251 co-relation queries the response was YES. [2024-06-14 11:54:59,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 698 events. 387/698 cut-off events. For 47251/47251 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3127 event pairs, 53 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 5776. Up to 536 conditions per place. [2024-06-14 11:54:59,775 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 135 selfloop transitions, 47 changer transitions 0/185 dead transitions. [2024-06-14 11:54:59,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 185 transitions, 2457 flow [2024-06-14 11:54:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:54:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:54:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 11:54:59,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-14 11:54:59,776 INFO L175 Difference]: Start difference. First operand has 186 places, 170 transitions, 1865 flow. Second operand 9 states and 118 transitions. [2024-06-14 11:54:59,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 185 transitions, 2457 flow [2024-06-14 11:54:59,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 185 transitions, 2361 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:59,859 INFO L231 Difference]: Finished difference. Result has 190 places, 174 transitions, 1944 flow [2024-06-14 11:54:59,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1944, PETRI_PLACES=190, PETRI_TRANSITIONS=174} [2024-06-14 11:54:59,860 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 158 predicate places. [2024-06-14 11:54:59,860 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 174 transitions, 1944 flow [2024-06-14 11:54:59,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:59,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:59,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:59,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 11:54:59,860 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:59,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:59,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1669581536, now seen corresponding path program 9 times [2024-06-14 11:54:59,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:59,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652733710] [2024-06-14 11:54:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:59,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:00,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:00,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652733710] [2024-06-14 11:55:00,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652733710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:00,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:00,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:55:00,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787493966] [2024-06-14 11:55:00,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:00,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:55:00,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:00,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:55:00,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:55:00,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:00,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 174 transitions, 1944 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:00,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:00,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:00,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:01,126 INFO L124 PetriNetUnfolderBase]: 385/695 cut-off events. [2024-06-14 11:55:01,126 INFO L125 PetriNetUnfolderBase]: For 47369/47369 co-relation queries the response was YES. [2024-06-14 11:55:01,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 695 events. 385/695 cut-off events. For 47369/47369 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3107 event pairs, 53 based on Foata normal form. 1/691 useless extension candidates. Maximal degree in co-relation 5774. Up to 524 conditions per place. [2024-06-14 11:55:01,131 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 131 selfloop transitions, 51 changer transitions 0/185 dead transitions. [2024-06-14 11:55:01,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 185 transitions, 2466 flow [2024-06-14 11:55:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 11:55:01,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 11:55:01,132 INFO L175 Difference]: Start difference. First operand has 190 places, 174 transitions, 1944 flow. Second operand 9 states and 120 transitions. [2024-06-14 11:55:01,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 185 transitions, 2466 flow [2024-06-14 11:55:01,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 185 transitions, 2377 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 11:55:01,221 INFO L231 Difference]: Finished difference. Result has 194 places, 174 transitions, 1962 flow [2024-06-14 11:55:01,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1962, PETRI_PLACES=194, PETRI_TRANSITIONS=174} [2024-06-14 11:55:01,222 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-14 11:55:01,222 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 174 transitions, 1962 flow [2024-06-14 11:55:01,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:01,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:01,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:01,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 11:55:01,223 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:01,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1669581784, now seen corresponding path program 9 times [2024-06-14 11:55:01,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:01,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519779971] [2024-06-14 11:55:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:01,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:02,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:02,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519779971] [2024-06-14 11:55:02,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519779971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:02,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:02,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:55:02,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711019000] [2024-06-14 11:55:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:02,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:55:02,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:55:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:55:02,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:02,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 174 transitions, 1962 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:02,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:02,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:02,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:02,524 INFO L124 PetriNetUnfolderBase]: 388/700 cut-off events. [2024-06-14 11:55:02,524 INFO L125 PetriNetUnfolderBase]: For 49035/49035 co-relation queries the response was YES. [2024-06-14 11:55:02,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6000 conditions, 700 events. 388/700 cut-off events. For 49035/49035 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3142 event pairs, 47 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 5903. Up to 593 conditions per place. [2024-06-14 11:55:02,530 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 148 selfloop transitions, 35 changer transitions 0/186 dead transitions. [2024-06-14 11:55:02,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 186 transitions, 2506 flow [2024-06-14 11:55:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 11:55:02,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872053872053872 [2024-06-14 11:55:02,531 INFO L175 Difference]: Start difference. First operand has 194 places, 174 transitions, 1962 flow. Second operand 9 states and 115 transitions. [2024-06-14 11:55:02,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 186 transitions, 2506 flow [2024-06-14 11:55:02,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 186 transitions, 2228 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-14 11:55:02,620 INFO L231 Difference]: Finished difference. Result has 191 places, 177 transitions, 1809 flow [2024-06-14 11:55:02,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1809, PETRI_PLACES=191, PETRI_TRANSITIONS=177} [2024-06-14 11:55:02,621 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2024-06-14 11:55:02,621 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 177 transitions, 1809 flow [2024-06-14 11:55:02,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:02,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:02,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:02,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 11:55:02,621 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:02,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:02,622 INFO L85 PathProgramCache]: Analyzing trace with hash -9788080, now seen corresponding path program 2 times [2024-06-14 11:55:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:02,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184753895] [2024-06-14 11:55:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:02,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184753895] [2024-06-14 11:55:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184753895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:04,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:04,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:55:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851856949] [2024-06-14 11:55:04,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:55:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:55:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:55:04,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:55:04,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 177 transitions, 1809 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:04,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:04,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:55:04,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:04,424 INFO L124 PetriNetUnfolderBase]: 368/677 cut-off events. [2024-06-14 11:55:04,425 INFO L125 PetriNetUnfolderBase]: For 49415/49417 co-relation queries the response was YES. [2024-06-14 11:55:04,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5460 conditions, 677 events. 368/677 cut-off events. For 49415/49417 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3099 event pairs, 44 based on Foata normal form. 3/676 useless extension candidates. Maximal degree in co-relation 5366. Up to 522 conditions per place. [2024-06-14 11:55:04,432 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 122 selfloop transitions, 32 changer transitions 0/187 dead transitions. [2024-06-14 11:55:04,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 187 transitions, 2175 flow [2024-06-14 11:55:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 11:55:04,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-14 11:55:04,434 INFO L175 Difference]: Start difference. First operand has 191 places, 177 transitions, 1809 flow. Second operand 9 states and 119 transitions. [2024-06-14 11:55:04,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 187 transitions, 2175 flow [2024-06-14 11:55:04,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 187 transitions, 2033 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:04,530 INFO L231 Difference]: Finished difference. Result has 193 places, 179 transitions, 1780 flow [2024-06-14 11:55:04,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1780, PETRI_PLACES=193, PETRI_TRANSITIONS=179} [2024-06-14 11:55:04,531 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2024-06-14 11:55:04,531 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 179 transitions, 1780 flow [2024-06-14 11:55:04,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:04,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:04,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:04,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 11:55:04,532 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:04,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1669344386, now seen corresponding path program 10 times [2024-06-14 11:55:04,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:04,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810138317] [2024-06-14 11:55:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:04,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:05,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:05,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810138317] [2024-06-14 11:55:05,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810138317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:05,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:05,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:55:05,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873846317] [2024-06-14 11:55:05,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:05,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:55:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:55:05,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:55:05,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:05,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 179 transitions, 1780 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:05,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:05,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:05,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:05,832 INFO L124 PetriNetUnfolderBase]: 382/691 cut-off events. [2024-06-14 11:55:05,832 INFO L125 PetriNetUnfolderBase]: For 48988/48988 co-relation queries the response was YES. [2024-06-14 11:55:05,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 691 events. 382/691 cut-off events. For 48988/48988 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3100 event pairs, 52 based on Foata normal form. 2/688 useless extension candidates. Maximal degree in co-relation 5333. Up to 537 conditions per place. [2024-06-14 11:55:05,838 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 142 selfloop transitions, 44 changer transitions 0/189 dead transitions. [2024-06-14 11:55:05,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 189 transitions, 2202 flow [2024-06-14 11:55:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:05,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 11:55:05,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872053872053872 [2024-06-14 11:55:05,839 INFO L175 Difference]: Start difference. First operand has 193 places, 179 transitions, 1780 flow. Second operand 9 states and 115 transitions. [2024-06-14 11:55:05,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 189 transitions, 2202 flow [2024-06-14 11:55:05,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 189 transitions, 2073 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:05,927 INFO L231 Difference]: Finished difference. Result has 195 places, 179 transitions, 1745 flow [2024-06-14 11:55:05,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1745, PETRI_PLACES=195, PETRI_TRANSITIONS=179} [2024-06-14 11:55:05,928 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-14 11:55:05,928 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 179 transitions, 1745 flow [2024-06-14 11:55:05,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:05,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:05,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:05,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 11:55:05,928 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:05,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1669351144, now seen corresponding path program 10 times [2024-06-14 11:55:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322138372] [2024-06-14 11:55:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:06,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:06,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322138372] [2024-06-14 11:55:06,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322138372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:06,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:06,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:55:06,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044649442] [2024-06-14 11:55:06,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:06,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:55:06,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:06,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:55:06,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:55:06,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:06,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 179 transitions, 1745 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:06,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:06,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:06,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:07,170 INFO L124 PetriNetUnfolderBase]: 380/688 cut-off events. [2024-06-14 11:55:07,170 INFO L125 PetriNetUnfolderBase]: For 47169/47169 co-relation queries the response was YES. [2024-06-14 11:55:07,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5355 conditions, 688 events. 380/688 cut-off events. For 47169/47169 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3092 event pairs, 47 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 5260. Up to 597 conditions per place. [2024-06-14 11:55:07,175 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 156 selfloop transitions, 28 changer transitions 0/187 dead transitions. [2024-06-14 11:55:07,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 187 transitions, 2131 flow [2024-06-14 11:55:07,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 11:55:07,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-14 11:55:07,176 INFO L175 Difference]: Start difference. First operand has 195 places, 179 transitions, 1745 flow. Second operand 9 states and 110 transitions. [2024-06-14 11:55:07,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 187 transitions, 2131 flow [2024-06-14 11:55:07,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 187 transitions, 2010 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:07,265 INFO L231 Difference]: Finished difference. Result has 196 places, 179 transitions, 1685 flow [2024-06-14 11:55:07,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1685, PETRI_PLACES=196, PETRI_TRANSITIONS=179} [2024-06-14 11:55:07,265 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-14 11:55:07,265 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 179 transitions, 1685 flow [2024-06-14 11:55:07,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:07,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:07,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:07,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 11:55:07,266 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:07,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1221680898, now seen corresponding path program 1 times [2024-06-14 11:55:07,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:07,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744196282] [2024-06-14 11:55:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:07,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:08,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:08,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744196282] [2024-06-14 11:55:08,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744196282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:08,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:08,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:08,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852295999] [2024-06-14 11:55:08,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:08,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:08,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:08,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:08,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:08,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:08,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 179 transitions, 1685 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:08,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:08,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:08,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:08,868 INFO L124 PetriNetUnfolderBase]: 383/695 cut-off events. [2024-06-14 11:55:08,868 INFO L125 PetriNetUnfolderBase]: For 48684/48684 co-relation queries the response was YES. [2024-06-14 11:55:08,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 695 events. 383/695 cut-off events. For 48684/48684 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3127 event pairs, 38 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 5253. Up to 590 conditions per place. [2024-06-14 11:55:08,874 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 164 selfloop transitions, 32 changer transitions 0/199 dead transitions. [2024-06-14 11:55:08,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 199 transitions, 2161 flow [2024-06-14 11:55:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:55:08,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:55:08,876 INFO L175 Difference]: Start difference. First operand has 196 places, 179 transitions, 1685 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:55:08,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 199 transitions, 2161 flow [2024-06-14 11:55:08,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 199 transitions, 2104 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:08,968 INFO L231 Difference]: Finished difference. Result has 199 places, 181 transitions, 1737 flow [2024-06-14 11:55:08,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1737, PETRI_PLACES=199, PETRI_TRANSITIONS=181} [2024-06-14 11:55:08,969 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-14 11:55:08,969 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 181 transitions, 1737 flow [2024-06-14 11:55:08,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:08,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:08,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:08,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 11:55:08,970 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:08,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1729759265, now seen corresponding path program 1 times [2024-06-14 11:55:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:08,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177829918] [2024-06-14 11:55:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:08,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:09,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:09,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177829918] [2024-06-14 11:55:09,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177829918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:09,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:09,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:09,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841936140] [2024-06-14 11:55:09,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:09,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:09,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:09,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:09,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:09,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 181 transitions, 1737 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:09,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:09,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:09,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:10,326 INFO L124 PetriNetUnfolderBase]: 389/705 cut-off events. [2024-06-14 11:55:10,327 INFO L125 PetriNetUnfolderBase]: For 52100/52100 co-relation queries the response was YES. [2024-06-14 11:55:10,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5492 conditions, 705 events. 389/705 cut-off events. For 52100/52100 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3200 event pairs, 35 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 5395. Up to 576 conditions per place. [2024-06-14 11:55:10,335 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 157 selfloop transitions, 40 changer transitions 0/200 dead transitions. [2024-06-14 11:55:10,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 200 transitions, 2233 flow [2024-06-14 11:55:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:55:10,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:55:10,337 INFO L175 Difference]: Start difference. First operand has 199 places, 181 transitions, 1737 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:55:10,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 200 transitions, 2233 flow [2024-06-14 11:55:10,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 200 transitions, 2140 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:10,438 INFO L231 Difference]: Finished difference. Result has 201 places, 184 transitions, 1784 flow [2024-06-14 11:55:10,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1784, PETRI_PLACES=201, PETRI_TRANSITIONS=184} [2024-06-14 11:55:10,438 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2024-06-14 11:55:10,438 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 184 transitions, 1784 flow [2024-06-14 11:55:10,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:10,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:10,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:10,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 11:55:10,439 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:10,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash 149912786, now seen corresponding path program 2 times [2024-06-14 11:55:10,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:10,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342814717] [2024-06-14 11:55:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:10,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:11,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:11,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342814717] [2024-06-14 11:55:11,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342814717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:11,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:11,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:11,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099676913] [2024-06-14 11:55:11,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:11,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:11,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:11,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:11,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:11,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 184 transitions, 1784 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:11,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:11,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:11,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:11,980 INFO L124 PetriNetUnfolderBase]: 392/712 cut-off events. [2024-06-14 11:55:11,980 INFO L125 PetriNetUnfolderBase]: For 52443/52443 co-relation queries the response was YES. [2024-06-14 11:55:11,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5627 conditions, 712 events. 392/712 cut-off events. For 52443/52443 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3243 event pairs, 35 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 5529. Up to 584 conditions per place. [2024-06-14 11:55:11,987 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 160 selfloop transitions, 39 changer transitions 0/202 dead transitions. [2024-06-14 11:55:11,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 202 transitions, 2280 flow [2024-06-14 11:55:11,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:11,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:55:11,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 11:55:11,989 INFO L175 Difference]: Start difference. First operand has 201 places, 184 transitions, 1784 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:55:11,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 202 transitions, 2280 flow [2024-06-14 11:55:12,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 202 transitions, 2162 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:12,092 INFO L231 Difference]: Finished difference. Result has 203 places, 186 transitions, 1795 flow [2024-06-14 11:55:12,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1795, PETRI_PLACES=203, PETRI_TRANSITIONS=186} [2024-06-14 11:55:12,093 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-14 11:55:12,093 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 186 transitions, 1795 flow [2024-06-14 11:55:12,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:12,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:12,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:12,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 11:55:12,093 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:12,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash 294012783, now seen corresponding path program 2 times [2024-06-14 11:55:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:12,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820548301] [2024-06-14 11:55:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:12,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:13,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:13,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820548301] [2024-06-14 11:55:13,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820548301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:13,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:13,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340717523] [2024-06-14 11:55:13,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:13,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:13,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:13,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:13,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 186 transitions, 1795 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:13,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:13,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:13,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:13,496 INFO L124 PetriNetUnfolderBase]: 418/754 cut-off events. [2024-06-14 11:55:13,496 INFO L125 PetriNetUnfolderBase]: For 63859/63859 co-relation queries the response was YES. [2024-06-14 11:55:13,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6218 conditions, 754 events. 418/754 cut-off events. For 63859/63859 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3456 event pairs, 36 based on Foata normal form. 2/754 useless extension candidates. Maximal degree in co-relation 6119. Up to 560 conditions per place. [2024-06-14 11:55:13,504 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 154 selfloop transitions, 52 changer transitions 0/209 dead transitions. [2024-06-14 11:55:13,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 209 transitions, 2512 flow [2024-06-14 11:55:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 11:55:13,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 11:55:13,505 INFO L175 Difference]: Start difference. First operand has 203 places, 186 transitions, 1795 flow. Second operand 10 states and 132 transitions. [2024-06-14 11:55:13,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 209 transitions, 2512 flow [2024-06-14 11:55:13,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 209 transitions, 2399 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:13,613 INFO L231 Difference]: Finished difference. Result has 206 places, 191 transitions, 1910 flow [2024-06-14 11:55:13,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1910, PETRI_PLACES=206, PETRI_TRANSITIONS=191} [2024-06-14 11:55:13,613 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 174 predicate places. [2024-06-14 11:55:13,613 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 191 transitions, 1910 flow [2024-06-14 11:55:13,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:13,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:13,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:13,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 11:55:13,614 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:13,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:13,614 INFO L85 PathProgramCache]: Analyzing trace with hash 294005343, now seen corresponding path program 3 times [2024-06-14 11:55:13,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:13,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722082398] [2024-06-14 11:55:13,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:13,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:14,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:14,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722082398] [2024-06-14 11:55:14,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722082398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:14,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:14,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:14,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055043296] [2024-06-14 11:55:14,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:14,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:14,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:14,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:14,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:14,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 191 transitions, 1910 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:14,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:14,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:14,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:15,013 INFO L124 PetriNetUnfolderBase]: 421/759 cut-off events. [2024-06-14 11:55:15,013 INFO L125 PetriNetUnfolderBase]: For 64870/64870 co-relation queries the response was YES. [2024-06-14 11:55:15,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6413 conditions, 759 events. 421/759 cut-off events. For 64870/64870 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3481 event pairs, 38 based on Foata normal form. 1/758 useless extension candidates. Maximal degree in co-relation 6312. Up to 586 conditions per place. [2024-06-14 11:55:15,020 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 159 selfloop transitions, 52 changer transitions 0/214 dead transitions. [2024-06-14 11:55:15,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 214 transitions, 2649 flow [2024-06-14 11:55:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 11:55:15,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:55:15,022 INFO L175 Difference]: Start difference. First operand has 206 places, 191 transitions, 1910 flow. Second operand 10 states and 130 transitions. [2024-06-14 11:55:15,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 214 transitions, 2649 flow [2024-06-14 11:55:15,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 214 transitions, 2522 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:15,121 INFO L231 Difference]: Finished difference. Result has 212 places, 199 transitions, 2064 flow [2024-06-14 11:55:15,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2064, PETRI_PLACES=212, PETRI_TRANSITIONS=199} [2024-06-14 11:55:15,121 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2024-06-14 11:55:15,121 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 199 transitions, 2064 flow [2024-06-14 11:55:15,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:15,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:15,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:15,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 11:55:15,122 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:15,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:15,122 INFO L85 PathProgramCache]: Analyzing trace with hash 294005126, now seen corresponding path program 3 times [2024-06-14 11:55:15,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:15,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104343618] [2024-06-14 11:55:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:15,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:16,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:16,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104343618] [2024-06-14 11:55:16,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104343618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:16,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:16,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:16,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192559897] [2024-06-14 11:55:16,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:16,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:16,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:16,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:16,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:16,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:16,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 199 transitions, 2064 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:16,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:16,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:16,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:16,829 INFO L124 PetriNetUnfolderBase]: 429/776 cut-off events. [2024-06-14 11:55:16,829 INFO L125 PetriNetUnfolderBase]: For 69155/69155 co-relation queries the response was YES. [2024-06-14 11:55:16,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6718 conditions, 776 events. 429/776 cut-off events. For 69155/69155 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3618 event pairs, 38 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 6613. Up to 612 conditions per place. [2024-06-14 11:55:16,836 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 168 selfloop transitions, 47 changer transitions 0/218 dead transitions. [2024-06-14 11:55:16,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 218 transitions, 2772 flow [2024-06-14 11:55:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:55:16,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:55:16,837 INFO L175 Difference]: Start difference. First operand has 212 places, 199 transitions, 2064 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:55:16,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 218 transitions, 2772 flow [2024-06-14 11:55:16,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 218 transitions, 2690 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 11:55:16,961 INFO L231 Difference]: Finished difference. Result has 217 places, 203 transitions, 2181 flow [2024-06-14 11:55:16,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2181, PETRI_PLACES=217, PETRI_TRANSITIONS=203} [2024-06-14 11:55:16,961 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 185 predicate places. [2024-06-14 11:55:16,961 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 203 transitions, 2181 flow [2024-06-14 11:55:16,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:16,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:16,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:16,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 11:55:16,962 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:16,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:16,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1585868952, now seen corresponding path program 4 times [2024-06-14 11:55:16,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:16,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579974528] [2024-06-14 11:55:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:16,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:18,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:18,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579974528] [2024-06-14 11:55:18,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579974528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:18,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:18,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:18,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483322222] [2024-06-14 11:55:18,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:18,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:18,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:18,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:18,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:18,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:18,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 203 transitions, 2181 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:18,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:18,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:18,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:18,704 INFO L124 PetriNetUnfolderBase]: 427/773 cut-off events. [2024-06-14 11:55:18,704 INFO L125 PetriNetUnfolderBase]: For 69447/69447 co-relation queries the response was YES. [2024-06-14 11:55:18,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6737 conditions, 773 events. 427/773 cut-off events. For 69447/69447 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3592 event pairs, 38 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 6630. Up to 640 conditions per place. [2024-06-14 11:55:18,711 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 176 selfloop transitions, 39 changer transitions 0/218 dead transitions. [2024-06-14 11:55:18,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 218 transitions, 2687 flow [2024-06-14 11:55:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:55:18,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 11:55:18,712 INFO L175 Difference]: Start difference. First operand has 217 places, 203 transitions, 2181 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:55:18,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 218 transitions, 2687 flow [2024-06-14 11:55:18,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 218 transitions, 2564 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:18,857 INFO L231 Difference]: Finished difference. Result has 221 places, 203 transitions, 2141 flow [2024-06-14 11:55:18,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2141, PETRI_PLACES=221, PETRI_TRANSITIONS=203} [2024-06-14 11:55:18,857 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-14 11:55:18,857 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 203 transitions, 2141 flow [2024-06-14 11:55:18,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:18,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:18,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 11:55:18,858 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:18,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash -727588851, now seen corresponding path program 4 times [2024-06-14 11:55:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:18,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354709661] [2024-06-14 11:55:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:19,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:19,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354709661] [2024-06-14 11:55:19,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354709661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:19,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:19,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578531320] [2024-06-14 11:55:19,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:19,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:19,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:19,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:19,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:20,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:20,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 203 transitions, 2141 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:20,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:20,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:20,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:20,390 INFO L124 PetriNetUnfolderBase]: 423/767 cut-off events. [2024-06-14 11:55:20,390 INFO L125 PetriNetUnfolderBase]: For 68883/68883 co-relation queries the response was YES. [2024-06-14 11:55:20,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 767 events. 423/767 cut-off events. For 68883/68883 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3574 event pairs, 38 based on Foata normal form. 2/767 useless extension candidates. Maximal degree in co-relation 6476. Up to 631 conditions per place. [2024-06-14 11:55:20,397 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 175 selfloop transitions, 40 changer transitions 0/218 dead transitions. [2024-06-14 11:55:20,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 218 transitions, 2647 flow [2024-06-14 11:55:20,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:55:20,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:55:20,398 INFO L175 Difference]: Start difference. First operand has 221 places, 203 transitions, 2141 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:55:20,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 218 transitions, 2647 flow [2024-06-14 11:55:20,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 218 transitions, 2508 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:20,516 INFO L231 Difference]: Finished difference. Result has 222 places, 203 transitions, 2088 flow [2024-06-14 11:55:20,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2088, PETRI_PLACES=222, PETRI_TRANSITIONS=203} [2024-06-14 11:55:20,517 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 190 predicate places. [2024-06-14 11:55:20,517 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 203 transitions, 2088 flow [2024-06-14 11:55:20,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:20,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:20,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:20,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 11:55:20,517 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:20,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash -533649441, now seen corresponding path program 5 times [2024-06-14 11:55:20,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:20,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820699672] [2024-06-14 11:55:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:20,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:21,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:21,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820699672] [2024-06-14 11:55:21,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820699672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:21,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:21,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:21,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941236923] [2024-06-14 11:55:21,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:21,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:21,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:21,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:21,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:21,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 203 transitions, 2088 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:21,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:21,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:21,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:21,862 INFO L124 PetriNetUnfolderBase]: 435/787 cut-off events. [2024-06-14 11:55:21,863 INFO L125 PetriNetUnfolderBase]: For 75448/75448 co-relation queries the response was YES. [2024-06-14 11:55:21,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6750 conditions, 787 events. 435/787 cut-off events. For 75448/75448 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3680 event pairs, 41 based on Foata normal form. 4/789 useless extension candidates. Maximal degree in co-relation 6640. Up to 628 conditions per place. [2024-06-14 11:55:21,870 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 173 selfloop transitions, 44 changer transitions 0/220 dead transitions. [2024-06-14 11:55:21,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 220 transitions, 2678 flow [2024-06-14 11:55:21,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:55:21,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:55:21,872 INFO L175 Difference]: Start difference. First operand has 222 places, 203 transitions, 2088 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:55:21,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 220 transitions, 2678 flow [2024-06-14 11:55:22,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 220 transitions, 2590 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:22,013 INFO L231 Difference]: Finished difference. Result has 224 places, 206 transitions, 2172 flow [2024-06-14 11:55:22,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2172, PETRI_PLACES=224, PETRI_TRANSITIONS=206} [2024-06-14 11:55:22,013 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-14 11:55:22,013 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 206 transitions, 2172 flow [2024-06-14 11:55:22,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:22,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:22,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:22,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 11:55:22,014 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:22,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:22,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1346022610, now seen corresponding path program 5 times [2024-06-14 11:55:22,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:22,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459742527] [2024-06-14 11:55:22,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:22,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:23,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:23,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459742527] [2024-06-14 11:55:23,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459742527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:23,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:23,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948083748] [2024-06-14 11:55:23,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:23,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:23,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:23,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:23,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:23,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 206 transitions, 2172 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:23,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:23,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:23,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:23,678 INFO L124 PetriNetUnfolderBase]: 438/794 cut-off events. [2024-06-14 11:55:23,678 INFO L125 PetriNetUnfolderBase]: For 72085/72085 co-relation queries the response was YES. [2024-06-14 11:55:23,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 794 events. 438/794 cut-off events. For 72085/72085 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3730 event pairs, 41 based on Foata normal form. 1/793 useless extension candidates. Maximal degree in co-relation 6800. Up to 642 conditions per place. [2024-06-14 11:55:23,684 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 175 selfloop transitions, 43 changer transitions 0/221 dead transitions. [2024-06-14 11:55:23,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 221 transitions, 2736 flow [2024-06-14 11:55:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 11:55:23,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-14 11:55:23,686 INFO L175 Difference]: Start difference. First operand has 224 places, 206 transitions, 2172 flow. Second operand 10 states and 126 transitions. [2024-06-14 11:55:23,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 221 transitions, 2736 flow [2024-06-14 11:55:23,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 221 transitions, 2590 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:23,828 INFO L231 Difference]: Finished difference. Result has 226 places, 208 transitions, 2175 flow [2024-06-14 11:55:23,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2175, PETRI_PLACES=226, PETRI_TRANSITIONS=208} [2024-06-14 11:55:23,829 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 194 predicate places. [2024-06-14 11:55:23,829 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 208 transitions, 2175 flow [2024-06-14 11:55:23,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:23,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:23,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:23,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 11:55:23,829 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:23,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1353651307, now seen corresponding path program 1 times [2024-06-14 11:55:23,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:23,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560411938] [2024-06-14 11:55:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:23,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:25,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:25,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560411938] [2024-06-14 11:55:25,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560411938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:25,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:25,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855813972] [2024-06-14 11:55:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:25,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:25,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:25,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:25,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:25,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:55:25,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 208 transitions, 2175 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:25,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:25,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:55:25,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:25,776 INFO L124 PetriNetUnfolderBase]: 420/778 cut-off events. [2024-06-14 11:55:25,776 INFO L125 PetriNetUnfolderBase]: For 77158/77160 co-relation queries the response was YES. [2024-06-14 11:55:25,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6744 conditions, 778 events. 420/778 cut-off events. For 77158/77160 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3755 event pairs, 39 based on Foata normal form. 4/779 useless extension candidates. Maximal degree in co-relation 6632. Up to 635 conditions per place. [2024-06-14 11:55:25,784 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 167 selfloop transitions, 20 changer transitions 0/220 dead transitions. [2024-06-14 11:55:25,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 220 transitions, 2601 flow [2024-06-14 11:55:25,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 11:55:25,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-14 11:55:25,785 INFO L175 Difference]: Start difference. First operand has 226 places, 208 transitions, 2175 flow. Second operand 9 states and 118 transitions. [2024-06-14 11:55:25,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 220 transitions, 2601 flow [2024-06-14 11:55:25,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 220 transitions, 2468 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:25,915 INFO L231 Difference]: Finished difference. Result has 227 places, 209 transitions, 2114 flow [2024-06-14 11:55:25,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2114, PETRI_PLACES=227, PETRI_TRANSITIONS=209} [2024-06-14 11:55:25,916 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2024-06-14 11:55:25,916 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 209 transitions, 2114 flow [2024-06-14 11:55:25,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:25,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:25,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:25,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 11:55:25,916 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:25,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1346232077, now seen corresponding path program 6 times [2024-06-14 11:55:25,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:25,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918461549] [2024-06-14 11:55:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:25,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:27,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:27,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918461549] [2024-06-14 11:55:27,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918461549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:27,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:27,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:27,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972905996] [2024-06-14 11:55:27,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:27,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:27,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:27,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:27,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:27,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 209 transitions, 2114 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:27,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:27,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:27,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:27,630 INFO L124 PetriNetUnfolderBase]: 450/815 cut-off events. [2024-06-14 11:55:27,630 INFO L125 PetriNetUnfolderBase]: For 77902/77902 co-relation queries the response was YES. [2024-06-14 11:55:27,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7019 conditions, 815 events. 450/815 cut-off events. For 77902/77902 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3870 event pairs, 42 based on Foata normal form. 1/814 useless extension candidates. Maximal degree in co-relation 6906. Up to 644 conditions per place. [2024-06-14 11:55:27,636 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 175 selfloop transitions, 51 changer transitions 0/229 dead transitions. [2024-06-14 11:55:27,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 229 transitions, 2868 flow [2024-06-14 11:55:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:27,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 11:55:27,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-14 11:55:27,637 INFO L175 Difference]: Start difference. First operand has 227 places, 209 transitions, 2114 flow. Second operand 10 states and 131 transitions. [2024-06-14 11:55:27,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 229 transitions, 2868 flow [2024-06-14 11:55:27,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 229 transitions, 2806 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:27,776 INFO L231 Difference]: Finished difference. Result has 231 places, 215 transitions, 2266 flow [2024-06-14 11:55:27,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2266, PETRI_PLACES=231, PETRI_TRANSITIONS=215} [2024-06-14 11:55:27,776 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 199 predicate places. [2024-06-14 11:55:27,776 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 215 transitions, 2266 flow [2024-06-14 11:55:27,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:27,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:27,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:27,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 11:55:27,777 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:27,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1353374477, now seen corresponding path program 7 times [2024-06-14 11:55:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:27,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177698075] [2024-06-14 11:55:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:28,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:28,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177698075] [2024-06-14 11:55:28,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177698075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:28,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:28,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:28,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048165973] [2024-06-14 11:55:28,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:28,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:28,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:28,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:29,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:29,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 215 transitions, 2266 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:29,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:29,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:29,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:29,372 INFO L124 PetriNetUnfolderBase]: 458/828 cut-off events. [2024-06-14 11:55:29,372 INFO L125 PetriNetUnfolderBase]: For 83543/83543 co-relation queries the response was YES. [2024-06-14 11:55:29,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 828 events. 458/828 cut-off events. For 83543/83543 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3945 event pairs, 41 based on Foata normal form. 1/827 useless extension candidates. Maximal degree in co-relation 7259. Up to 577 conditions per place. [2024-06-14 11:55:29,382 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 155 selfloop transitions, 75 changer transitions 0/233 dead transitions. [2024-06-14 11:55:29,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 233 transitions, 3152 flow [2024-06-14 11:55:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 11:55:29,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 11:55:29,384 INFO L175 Difference]: Start difference. First operand has 231 places, 215 transitions, 2266 flow. Second operand 10 states and 132 transitions. [2024-06-14 11:55:29,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 233 transitions, 3152 flow [2024-06-14 11:55:29,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 233 transitions, 3028 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:29,548 INFO L231 Difference]: Finished difference. Result has 235 places, 219 transitions, 2398 flow [2024-06-14 11:55:29,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2398, PETRI_PLACES=235, PETRI_TRANSITIONS=219} [2024-06-14 11:55:29,549 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-14 11:55:29,549 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 219 transitions, 2398 flow [2024-06-14 11:55:29,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:29,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:29,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:29,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 11:55:29,550 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:29,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1353641387, now seen corresponding path program 8 times [2024-06-14 11:55:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:29,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867261244] [2024-06-14 11:55:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:29,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:30,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:30,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867261244] [2024-06-14 11:55:30,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867261244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:30,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:30,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10956714] [2024-06-14 11:55:30,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:30,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:30,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:30,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:30,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:30,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 219 transitions, 2398 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:30,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:30,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:30,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:31,013 INFO L124 PetriNetUnfolderBase]: 469/846 cut-off events. [2024-06-14 11:55:31,013 INFO L125 PetriNetUnfolderBase]: For 91794/91794 co-relation queries the response was YES. [2024-06-14 11:55:31,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7816 conditions, 846 events. 469/846 cut-off events. For 91794/91794 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4051 event pairs, 41 based on Foata normal form. 2/846 useless extension candidates. Maximal degree in co-relation 7699. Up to 529 conditions per place. [2024-06-14 11:55:31,020 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 147 selfloop transitions, 88 changer transitions 0/238 dead transitions. [2024-06-14 11:55:31,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 238 transitions, 3228 flow [2024-06-14 11:55:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 11:55:31,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 11:55:31,021 INFO L175 Difference]: Start difference. First operand has 235 places, 219 transitions, 2398 flow. Second operand 10 states and 134 transitions. [2024-06-14 11:55:31,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 238 transitions, 3228 flow [2024-06-14 11:55:31,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 238 transitions, 3038 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:31,190 INFO L231 Difference]: Finished difference. Result has 239 places, 224 transitions, 2580 flow [2024-06-14 11:55:31,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2580, PETRI_PLACES=239, PETRI_TRANSITIONS=224} [2024-06-14 11:55:31,191 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 207 predicate places. [2024-06-14 11:55:31,191 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 224 transitions, 2580 flow [2024-06-14 11:55:31,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:31,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:31,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:31,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 11:55:31,191 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:31,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:31,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1346224637, now seen corresponding path program 9 times [2024-06-14 11:55:31,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:31,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578634274] [2024-06-14 11:55:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:31,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:32,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:32,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578634274] [2024-06-14 11:55:32,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578634274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:32,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:32,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:32,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000558935] [2024-06-14 11:55:32,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:32,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:32,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:32,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:32,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:32,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 224 transitions, 2580 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:32,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:32,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:32,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:32,748 INFO L124 PetriNetUnfolderBase]: 467/843 cut-off events. [2024-06-14 11:55:32,748 INFO L125 PetriNetUnfolderBase]: For 89408/89408 co-relation queries the response was YES. [2024-06-14 11:55:32,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7883 conditions, 843 events. 467/843 cut-off events. For 89408/89408 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4021 event pairs, 43 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 7764. Up to 673 conditions per place. [2024-06-14 11:55:32,760 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 184 selfloop transitions, 51 changer transitions 0/238 dead transitions. [2024-06-14 11:55:32,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 238 transitions, 3163 flow [2024-06-14 11:55:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 11:55:32,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:55:32,762 INFO L175 Difference]: Start difference. First operand has 239 places, 224 transitions, 2580 flow. Second operand 10 states and 130 transitions. [2024-06-14 11:55:32,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 238 transitions, 3163 flow [2024-06-14 11:55:32,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 238 transitions, 2972 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:32,953 INFO L231 Difference]: Finished difference. Result has 243 places, 225 transitions, 2511 flow [2024-06-14 11:55:32,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2511, PETRI_PLACES=243, PETRI_TRANSITIONS=225} [2024-06-14 11:55:32,954 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 211 predicate places. [2024-06-14 11:55:32,954 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 225 transitions, 2511 flow [2024-06-14 11:55:32,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:32,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:32,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:32,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 11:55:32,954 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:32,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:32,955 INFO L85 PathProgramCache]: Analyzing trace with hash -346611910, now seen corresponding path program 1 times [2024-06-14 11:55:32,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:32,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303881237] [2024-06-14 11:55:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:32,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:34,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303881237] [2024-06-14 11:55:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303881237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:34,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:34,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736394087] [2024-06-14 11:55:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:34,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:34,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:34,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:34,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:34,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 225 transitions, 2511 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:34,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:34,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:34,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:34,771 INFO L124 PetriNetUnfolderBase]: 465/840 cut-off events. [2024-06-14 11:55:34,771 INFO L125 PetriNetUnfolderBase]: For 88858/88858 co-relation queries the response was YES. [2024-06-14 11:55:34,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7745 conditions, 840 events. 465/840 cut-off events. For 88858/88858 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4010 event pairs, 40 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 7624. Up to 722 conditions per place. [2024-06-14 11:55:34,779 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 196 selfloop transitions, 37 changer transitions 0/236 dead transitions. [2024-06-14 11:55:34,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 236 transitions, 3003 flow [2024-06-14 11:55:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 11:55:34,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-14 11:55:34,780 INFO L175 Difference]: Start difference. First operand has 243 places, 225 transitions, 2511 flow. Second operand 10 states and 124 transitions. [2024-06-14 11:55:34,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 236 transitions, 3003 flow [2024-06-14 11:55:34,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 236 transitions, 2888 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:34,949 INFO L231 Difference]: Finished difference. Result has 246 places, 225 transitions, 2475 flow [2024-06-14 11:55:34,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2475, PETRI_PLACES=246, PETRI_TRANSITIONS=225} [2024-06-14 11:55:34,950 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-14 11:55:34,950 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 225 transitions, 2475 flow [2024-06-14 11:55:34,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:34,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:34,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:34,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 11:55:34,950 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:34,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:34,951 INFO L85 PathProgramCache]: Analyzing trace with hash -526298008, now seen corresponding path program 6 times [2024-06-14 11:55:34,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:34,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453353840] [2024-06-14 11:55:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:34,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:36,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453353840] [2024-06-14 11:55:36,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453353840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:36,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:36,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:36,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240287889] [2024-06-14 11:55:36,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:36,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:36,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:36,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:36,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:36,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 225 transitions, 2475 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:36,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:36,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:36,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:36,798 INFO L124 PetriNetUnfolderBase]: 473/857 cut-off events. [2024-06-14 11:55:36,798 INFO L125 PetriNetUnfolderBase]: For 94066/94066 co-relation queries the response was YES. [2024-06-14 11:55:36,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7935 conditions, 857 events. 473/857 cut-off events. For 94066/94066 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4135 event pairs, 42 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 7813. Up to 638 conditions per place. [2024-06-14 11:55:36,807 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 176 selfloop transitions, 63 changer transitions 0/242 dead transitions. [2024-06-14 11:55:36,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 242 transitions, 3279 flow [2024-06-14 11:55:36,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:55:36,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:55:36,808 INFO L175 Difference]: Start difference. First operand has 246 places, 225 transitions, 2475 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:55:36,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 242 transitions, 3279 flow [2024-06-14 11:55:36,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 242 transitions, 3180 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:36,975 INFO L231 Difference]: Finished difference. Result has 247 places, 229 transitions, 2627 flow [2024-06-14 11:55:36,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2627, PETRI_PLACES=247, PETRI_TRANSITIONS=229} [2024-06-14 11:55:36,975 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2024-06-14 11:55:36,975 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 229 transitions, 2627 flow [2024-06-14 11:55:36,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:36,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:36,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:36,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 11:55:36,976 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:36,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:36,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1758801846, now seen corresponding path program 7 times [2024-06-14 11:55:36,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:36,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642783157] [2024-06-14 11:55:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:36,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:38,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:38,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642783157] [2024-06-14 11:55:38,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642783157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:38,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:38,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011569519] [2024-06-14 11:55:38,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:38,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:38,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:38,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:38,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:38,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 229 transitions, 2627 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:38,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:38,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:38,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:38,794 INFO L124 PetriNetUnfolderBase]: 471/854 cut-off events. [2024-06-14 11:55:38,794 INFO L125 PetriNetUnfolderBase]: For 94029/94029 co-relation queries the response was YES. [2024-06-14 11:55:38,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7941 conditions, 854 events. 471/854 cut-off events. For 94029/94029 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4125 event pairs, 42 based on Foata normal form. 1/853 useless extension candidates. Maximal degree in co-relation 7818. Up to 689 conditions per place. [2024-06-14 11:55:38,802 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 192 selfloop transitions, 47 changer transitions 0/242 dead transitions. [2024-06-14 11:55:38,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 242 transitions, 3199 flow [2024-06-14 11:55:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:55:38,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:55:38,803 INFO L175 Difference]: Start difference. First operand has 247 places, 229 transitions, 2627 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:55:38,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 242 transitions, 3199 flow [2024-06-14 11:55:38,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 242 transitions, 3066 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:38,978 INFO L231 Difference]: Finished difference. Result has 251 places, 229 transitions, 2593 flow [2024-06-14 11:55:38,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2593, PETRI_PLACES=251, PETRI_TRANSITIONS=229} [2024-06-14 11:55:38,979 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-14 11:55:38,979 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 229 transitions, 2593 flow [2024-06-14 11:55:38,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:38,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:38,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:38,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 11:55:38,980 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:38,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:38,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1765959343, now seen corresponding path program 10 times [2024-06-14 11:55:38,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:38,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461015581] [2024-06-14 11:55:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:40,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:40,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461015581] [2024-06-14 11:55:40,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461015581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:40,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:40,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:40,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25045751] [2024-06-14 11:55:40,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:40,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:40,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:40,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:40,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:40,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 229 transitions, 2593 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:40,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:40,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:40,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:40,504 INFO L124 PetriNetUnfolderBase]: 469/851 cut-off events. [2024-06-14 11:55:40,504 INFO L125 PetriNetUnfolderBase]: For 92155/92155 co-relation queries the response was YES. [2024-06-14 11:55:40,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7859 conditions, 851 events. 469/851 cut-off events. For 92155/92155 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4102 event pairs, 42 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 7734. Up to 597 conditions per place. [2024-06-14 11:55:40,513 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 162 selfloop transitions, 77 changer transitions 0/242 dead transitions. [2024-06-14 11:55:40,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 242 transitions, 3144 flow [2024-06-14 11:55:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 11:55:40,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-14 11:55:40,514 INFO L175 Difference]: Start difference. First operand has 251 places, 229 transitions, 2593 flow. Second operand 10 states and 131 transitions. [2024-06-14 11:55:40,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 242 transitions, 3144 flow [2024-06-14 11:55:40,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 242 transitions, 2929 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-14 11:55:40,745 INFO L231 Difference]: Finished difference. Result has 251 places, 230 transitions, 2550 flow [2024-06-14 11:55:40,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2386, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2550, PETRI_PLACES=251, PETRI_TRANSITIONS=230} [2024-06-14 11:55:40,746 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-14 11:55:40,746 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 230 transitions, 2550 flow [2024-06-14 11:55:40,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:40,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:40,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:40,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 11:55:40,746 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:40,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:40,747 INFO L85 PathProgramCache]: Analyzing trace with hash -845161155, now seen corresponding path program 11 times [2024-06-14 11:55:40,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:40,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824456860] [2024-06-14 11:55:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:40,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:41,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:41,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824456860] [2024-06-14 11:55:41,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824456860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:41,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:41,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:41,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870375509] [2024-06-14 11:55:41,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:41,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:41,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:41,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:41,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 230 transitions, 2550 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:41,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:41,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:41,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:42,280 INFO L124 PetriNetUnfolderBase]: 510/917 cut-off events. [2024-06-14 11:55:42,280 INFO L125 PetriNetUnfolderBase]: For 119051/119051 co-relation queries the response was YES. [2024-06-14 11:55:42,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9061 conditions, 917 events. 510/917 cut-off events. For 119051/119051 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4478 event pairs, 54 based on Foata normal form. 2/914 useless extension candidates. Maximal degree in co-relation 8936. Up to 659 conditions per place. [2024-06-14 11:55:42,290 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 190 selfloop transitions, 63 changer transitions 0/256 dead transitions. [2024-06-14 11:55:42,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 256 transitions, 3898 flow [2024-06-14 11:55:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:42,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:42,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 11:55:42,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-14 11:55:42,291 INFO L175 Difference]: Start difference. First operand has 251 places, 230 transitions, 2550 flow. Second operand 10 states and 139 transitions. [2024-06-14 11:55:42,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 256 transitions, 3898 flow [2024-06-14 11:55:42,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 256 transitions, 3751 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:42,542 INFO L231 Difference]: Finished difference. Result has 257 places, 239 transitions, 2817 flow [2024-06-14 11:55:42,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2817, PETRI_PLACES=257, PETRI_TRANSITIONS=239} [2024-06-14 11:55:42,542 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 225 predicate places. [2024-06-14 11:55:42,542 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 239 transitions, 2817 flow [2024-06-14 11:55:42,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:42,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:42,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 11:55:42,543 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:42,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash 217420904, now seen corresponding path program 8 times [2024-06-14 11:55:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:42,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224403313] [2024-06-14 11:55:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:43,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:43,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224403313] [2024-06-14 11:55:43,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224403313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:43,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:43,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:43,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537724725] [2024-06-14 11:55:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:43,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:43,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:44,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:44,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 239 transitions, 2817 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:44,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:44,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:44,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:44,429 INFO L124 PetriNetUnfolderBase]: 518/934 cut-off events. [2024-06-14 11:55:44,429 INFO L125 PetriNetUnfolderBase]: For 125033/125033 co-relation queries the response was YES. [2024-06-14 11:55:44,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9522 conditions, 934 events. 518/934 cut-off events. For 125033/125033 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4596 event pairs, 55 based on Foata normal form. 1/930 useless extension candidates. Maximal degree in co-relation 9393. Up to 738 conditions per place. [2024-06-14 11:55:44,439 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 53 changer transitions 0/255 dead transitions. [2024-06-14 11:55:44,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 255 transitions, 3699 flow [2024-06-14 11:55:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 11:55:44,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:55:44,440 INFO L175 Difference]: Start difference. First operand has 257 places, 239 transitions, 2817 flow. Second operand 10 states and 130 transitions. [2024-06-14 11:55:44,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 255 transitions, 3699 flow [2024-06-14 11:55:44,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 255 transitions, 3566 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-14 11:55:44,726 INFO L231 Difference]: Finished difference. Result has 263 places, 243 transitions, 2919 flow [2024-06-14 11:55:44,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2919, PETRI_PLACES=263, PETRI_TRANSITIONS=243} [2024-06-14 11:55:44,727 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 231 predicate places. [2024-06-14 11:55:44,727 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 243 transitions, 2919 flow [2024-06-14 11:55:44,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:44,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:44,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:44,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 11:55:44,728 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:44,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash -271595877, now seen corresponding path program 2 times [2024-06-14 11:55:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:44,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522558913] [2024-06-14 11:55:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:44,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:46,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:46,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522558913] [2024-06-14 11:55:46,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522558913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:46,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:46,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:46,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420530167] [2024-06-14 11:55:46,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:46,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:46,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:46,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:46,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:55:46,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 243 transitions, 2919 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:46,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:46,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:55:46,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:46,830 INFO L124 PetriNetUnfolderBase]: 503/926 cut-off events. [2024-06-14 11:55:46,831 INFO L125 PetriNetUnfolderBase]: For 138414/138416 co-relation queries the response was YES. [2024-06-14 11:55:46,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9674 conditions, 926 events. 503/926 cut-off events. For 138414/138416 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4665 event pairs, 49 based on Foata normal form. 4/925 useless extension candidates. Maximal degree in co-relation 9543. Up to 765 conditions per place. [2024-06-14 11:55:46,839 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 205 selfloop transitions, 19 changer transitions 0/258 dead transitions. [2024-06-14 11:55:46,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 258 transitions, 3609 flow [2024-06-14 11:55:46,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:55:46,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 11:55:46,840 INFO L175 Difference]: Start difference. First operand has 263 places, 243 transitions, 2919 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:55:46,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 258 transitions, 3609 flow [2024-06-14 11:55:47,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 258 transitions, 3488 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:47,137 INFO L231 Difference]: Finished difference. Result has 268 places, 245 transitions, 2898 flow [2024-06-14 11:55:47,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2898, PETRI_PLACES=268, PETRI_TRANSITIONS=245} [2024-06-14 11:55:47,137 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 236 predicate places. [2024-06-14 11:55:47,137 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 245 transitions, 2898 flow [2024-06-14 11:55:47,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:47,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:47,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:47,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 11:55:47,138 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:47,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash 217428561, now seen corresponding path program 12 times [2024-06-14 11:55:47,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:47,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380429118] [2024-06-14 11:55:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:47,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:48,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:48,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380429118] [2024-06-14 11:55:48,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380429118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:48,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:48,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:48,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127604043] [2024-06-14 11:55:48,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:48,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:48,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:48,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:48,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:48,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:48,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 245 transitions, 2898 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:48,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:48,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:48,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:48,763 INFO L124 PetriNetUnfolderBase]: 532/960 cut-off events. [2024-06-14 11:55:48,763 INFO L125 PetriNetUnfolderBase]: For 136816/136816 co-relation queries the response was YES. [2024-06-14 11:55:48,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9908 conditions, 960 events. 532/960 cut-off events. For 136816/136816 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4768 event pairs, 54 based on Foata normal form. 1/956 useless extension candidates. Maximal degree in co-relation 9775. Up to 739 conditions per place. [2024-06-14 11:55:48,772 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 203 selfloop transitions, 61 changer transitions 0/267 dead transitions. [2024-06-14 11:55:48,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 267 transitions, 4039 flow [2024-06-14 11:55:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 11:55:48,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 11:55:48,773 INFO L175 Difference]: Start difference. First operand has 268 places, 245 transitions, 2898 flow. Second operand 10 states and 135 transitions. [2024-06-14 11:55:48,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 267 transitions, 4039 flow [2024-06-14 11:55:49,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 267 transitions, 3983 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:49,093 INFO L231 Difference]: Finished difference. Result has 273 places, 254 transitions, 3187 flow [2024-06-14 11:55:49,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3187, PETRI_PLACES=273, PETRI_TRANSITIONS=254} [2024-06-14 11:55:49,094 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-14 11:55:49,094 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 254 transitions, 3187 flow [2024-06-14 11:55:49,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:49,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:49,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:49,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 11:55:49,094 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:49,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:49,095 INFO L85 PathProgramCache]: Analyzing trace with hash 465582499, now seen corresponding path program 13 times [2024-06-14 11:55:49,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:49,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745086] [2024-06-14 11:55:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:49,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:50,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:50,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745086] [2024-06-14 11:55:50,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:50,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:50,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703867001] [2024-06-14 11:55:50,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:50,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:50,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:50,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:50,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:50,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:50,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 254 transitions, 3187 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:50,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:50,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:50,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:50,605 INFO L124 PetriNetUnfolderBase]: 535/965 cut-off events. [2024-06-14 11:55:50,605 INFO L125 PetriNetUnfolderBase]: For 139979/139979 co-relation queries the response was YES. [2024-06-14 11:55:50,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10138 conditions, 965 events. 535/965 cut-off events. For 139979/139979 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4789 event pairs, 54 based on Foata normal form. 1/961 useless extension candidates. Maximal degree in co-relation 10002. Up to 596 conditions per place. [2024-06-14 11:55:50,616 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 154 selfloop transitions, 113 changer transitions 0/270 dead transitions. [2024-06-14 11:55:50,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 270 transitions, 4225 flow [2024-06-14 11:55:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 11:55:50,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-14 11:55:50,617 INFO L175 Difference]: Start difference. First operand has 273 places, 254 transitions, 3187 flow. Second operand 10 states and 133 transitions. [2024-06-14 11:55:50,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 270 transitions, 4225 flow [2024-06-14 11:55:51,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 270 transitions, 4114 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-14 11:55:51,014 INFO L231 Difference]: Finished difference. Result has 280 places, 258 transitions, 3437 flow [2024-06-14 11:55:51,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3437, PETRI_PLACES=280, PETRI_TRANSITIONS=258} [2024-06-14 11:55:51,015 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-14 11:55:51,015 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 258 transitions, 3437 flow [2024-06-14 11:55:51,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:51,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:51,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:51,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 11:55:51,015 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:51,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -271982168, now seen corresponding path program 2 times [2024-06-14 11:55:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916310364] [2024-06-14 11:55:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:51,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:52,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:52,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916310364] [2024-06-14 11:55:52,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916310364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:52,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:52,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:52,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048018208] [2024-06-14 11:55:52,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:52,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:52,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:52,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:52,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:52,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:52,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 258 transitions, 3437 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:52,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:52,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:52,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:53,019 INFO L124 PetriNetUnfolderBase]: 538/970 cut-off events. [2024-06-14 11:55:53,020 INFO L125 PetriNetUnfolderBase]: For 144713/144713 co-relation queries the response was YES. [2024-06-14 11:55:53,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10470 conditions, 970 events. 538/970 cut-off events. For 144713/144713 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4818 event pairs, 53 based on Foata normal form. 1/969 useless extension candidates. Maximal degree in co-relation 10331. Up to 893 conditions per place. [2024-06-14 11:55:53,030 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 247 selfloop transitions, 18 changer transitions 0/268 dead transitions. [2024-06-14 11:55:53,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 268 transitions, 4035 flow [2024-06-14 11:55:53,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 11:55:53,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-14 11:55:53,031 INFO L175 Difference]: Start difference. First operand has 280 places, 258 transitions, 3437 flow. Second operand 9 states and 109 transitions. [2024-06-14 11:55:53,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 268 transitions, 4035 flow [2024-06-14 11:55:53,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 268 transitions, 3768 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:53,457 INFO L231 Difference]: Finished difference. Result has 282 places, 260 transitions, 3267 flow [2024-06-14 11:55:53,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3267, PETRI_PLACES=282, PETRI_TRANSITIONS=260} [2024-06-14 11:55:53,458 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 250 predicate places. [2024-06-14 11:55:53,458 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 260 transitions, 3267 flow [2024-06-14 11:55:53,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:53,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:53,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:53,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 11:55:53,458 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:53,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash -271981827, now seen corresponding path program 3 times [2024-06-14 11:55:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416309583] [2024-06-14 11:55:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:54,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416309583] [2024-06-14 11:55:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416309583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:54,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:54,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36512578] [2024-06-14 11:55:54,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:54,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:54,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:54,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:54,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:54,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:55:54,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 260 transitions, 3267 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:54,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:54,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:55:54,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:55,448 INFO L124 PetriNetUnfolderBase]: 508/935 cut-off events. [2024-06-14 11:55:55,448 INFO L125 PetriNetUnfolderBase]: For 145009/145011 co-relation queries the response was YES. [2024-06-14 11:55:55,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9909 conditions, 935 events. 508/935 cut-off events. For 145009/145011 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4756 event pairs, 49 based on Foata normal form. 4/934 useless extension candidates. Maximal degree in co-relation 9769. Up to 789 conditions per place. [2024-06-14 11:55:55,459 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 218 selfloop transitions, 16 changer transitions 0/269 dead transitions. [2024-06-14 11:55:55,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 269 transitions, 3755 flow [2024-06-14 11:55:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 11:55:55,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-14 11:55:55,460 INFO L175 Difference]: Start difference. First operand has 282 places, 260 transitions, 3267 flow. Second operand 9 states and 116 transitions. [2024-06-14 11:55:55,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 269 transitions, 3755 flow [2024-06-14 11:55:55,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 269 transitions, 3660 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:55,837 INFO L231 Difference]: Finished difference. Result has 284 places, 260 transitions, 3208 flow [2024-06-14 11:55:55,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3208, PETRI_PLACES=284, PETRI_TRANSITIONS=260} [2024-06-14 11:55:55,837 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 252 predicate places. [2024-06-14 11:55:55,838 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 260 transitions, 3208 flow [2024-06-14 11:55:55,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:55,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:55,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:55,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 11:55:55,838 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:55,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:55,839 INFO L85 PathProgramCache]: Analyzing trace with hash 465590218, now seen corresponding path program 3 times [2024-06-14 11:55:55,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:55,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271881966] [2024-06-14 11:55:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:55,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:57,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:57,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271881966] [2024-06-14 11:55:57,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271881966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:57,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:57,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:57,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025649280] [2024-06-14 11:55:57,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:57,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:57,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:57,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:57,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:57,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:57,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 260 transitions, 3208 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:57,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:57,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:57,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:57,714 INFO L124 PetriNetUnfolderBase]: 538/971 cut-off events. [2024-06-14 11:55:57,714 INFO L125 PetriNetUnfolderBase]: For 142732/142732 co-relation queries the response was YES. [2024-06-14 11:55:57,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10116 conditions, 971 events. 538/971 cut-off events. For 142732/142732 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4838 event pairs, 49 based on Foata normal form. 1/967 useless extension candidates. Maximal degree in co-relation 9975. Up to 787 conditions per place. [2024-06-14 11:55:57,725 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 207 selfloop transitions, 61 changer transitions 0/271 dead transitions. [2024-06-14 11:55:57,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 271 transitions, 3818 flow [2024-06-14 11:55:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:55:57,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:55:57,726 INFO L175 Difference]: Start difference. First operand has 284 places, 260 transitions, 3208 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:55:57,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 271 transitions, 3818 flow [2024-06-14 11:55:58,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 271 transitions, 3784 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:58,148 INFO L231 Difference]: Finished difference. Result has 286 places, 262 transitions, 3359 flow [2024-06-14 11:55:58,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3174, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3359, PETRI_PLACES=286, PETRI_TRANSITIONS=262} [2024-06-14 11:55:58,149 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-14 11:55:58,149 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 262 transitions, 3359 flow [2024-06-14 11:55:58,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:58,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:58,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:58,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 11:55:58,150 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:58,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash 465589939, now seen corresponding path program 14 times [2024-06-14 11:55:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:58,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534843764] [2024-06-14 11:55:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:58,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:59,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:59,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:59,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534843764] [2024-06-14 11:55:59,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534843764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:59,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:59,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:55:59,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041246705] [2024-06-14 11:55:59,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:59,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:55:59,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:59,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:55:59,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:55:59,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:55:59,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 262 transitions, 3359 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:59,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:59,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:55:59,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:59,688 INFO L124 PetriNetUnfolderBase]: 541/975 cut-off events. [2024-06-14 11:55:59,688 INFO L125 PetriNetUnfolderBase]: For 145893/145893 co-relation queries the response was YES. [2024-06-14 11:55:59,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10320 conditions, 975 events. 541/975 cut-off events. For 145893/145893 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4883 event pairs, 53 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 10178. Up to 605 conditions per place. [2024-06-14 11:55:59,700 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 160 selfloop transitions, 113 changer transitions 0/276 dead transitions. [2024-06-14 11:55:59,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 276 transitions, 4355 flow [2024-06-14 11:55:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:55:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:55:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 11:55:59,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 11:55:59,701 INFO L175 Difference]: Start difference. First operand has 286 places, 262 transitions, 3359 flow. Second operand 10 states and 134 transitions. [2024-06-14 11:55:59,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 276 transitions, 4355 flow [2024-06-14 11:56:00,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 276 transitions, 4186 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:00,134 INFO L231 Difference]: Finished difference. Result has 288 places, 264 transitions, 3463 flow [2024-06-14 11:56:00,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3190, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3463, PETRI_PLACES=288, PETRI_TRANSITIONS=264} [2024-06-14 11:56:00,135 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 256 predicate places. [2024-06-14 11:56:00,135 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 264 transitions, 3463 flow [2024-06-14 11:56:00,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:00,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:00,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:00,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 11:56:00,136 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:00,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash -845153436, now seen corresponding path program 4 times [2024-06-14 11:56:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:00,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297486120] [2024-06-14 11:56:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:00,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:01,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:01,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297486120] [2024-06-14 11:56:01,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297486120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:01,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654126677] [2024-06-14 11:56:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:01,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:01,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:01,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:01,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:01,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:01,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 264 transitions, 3463 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:01,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:01,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:01,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:01,960 INFO L124 PetriNetUnfolderBase]: 539/972 cut-off events. [2024-06-14 11:56:01,960 INFO L125 PetriNetUnfolderBase]: For 146356/146356 co-relation queries the response was YES. [2024-06-14 11:56:01,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10338 conditions, 972 events. 539/972 cut-off events. For 146356/146356 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4868 event pairs, 49 based on Foata normal form. 1/969 useless extension candidates. Maximal degree in co-relation 10195. Up to 845 conditions per place. [2024-06-14 11:56:01,971 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 233 selfloop transitions, 37 changer transitions 0/273 dead transitions. [2024-06-14 11:56:01,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 273 transitions, 4023 flow [2024-06-14 11:56:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 11:56:01,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-14 11:56:01,972 INFO L175 Difference]: Start difference. First operand has 288 places, 264 transitions, 3463 flow. Second operand 10 states and 124 transitions. [2024-06-14 11:56:01,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 273 transitions, 4023 flow [2024-06-14 11:56:02,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 273 transitions, 3752 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:02,439 INFO L231 Difference]: Finished difference. Result has 291 places, 264 transitions, 3271 flow [2024-06-14 11:56:02,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3192, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3271, PETRI_PLACES=291, PETRI_TRANSITIONS=264} [2024-06-14 11:56:02,440 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2024-06-14 11:56:02,440 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 264 transitions, 3271 flow [2024-06-14 11:56:02,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:02,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:02,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:02,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 11:56:02,440 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:02,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1319263757, now seen corresponding path program 15 times [2024-06-14 11:56:02,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:02,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521132693] [2024-06-14 11:56:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:02,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:03,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:03,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521132693] [2024-06-14 11:56:03,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521132693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:03,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:03,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602319099] [2024-06-14 11:56:03,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:03,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:03,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:03,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:03,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:03,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:03,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 264 transitions, 3271 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:03,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:03,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:03,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:03,787 INFO L124 PetriNetUnfolderBase]: 541/976 cut-off events. [2024-06-14 11:56:03,788 INFO L125 PetriNetUnfolderBase]: For 152754/152754 co-relation queries the response was YES. [2024-06-14 11:56:03,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10029 conditions, 976 events. 541/976 cut-off events. For 152754/152754 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4899 event pairs, 53 based on Foata normal form. 4/975 useless extension candidates. Maximal degree in co-relation 9885. Up to 792 conditions per place. [2024-06-14 11:56:03,804 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 227 selfloop transitions, 49 changer transitions 0/279 dead transitions. [2024-06-14 11:56:03,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 279 transitions, 4032 flow [2024-06-14 11:56:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:56:03,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 11:56:03,806 INFO L175 Difference]: Start difference. First operand has 291 places, 264 transitions, 3271 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:56:03,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 279 transitions, 4032 flow [2024-06-14 11:56:04,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 279 transitions, 3949 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:04,262 INFO L231 Difference]: Finished difference. Result has 292 places, 267 transitions, 3385 flow [2024-06-14 11:56:04,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3385, PETRI_PLACES=292, PETRI_TRANSITIONS=267} [2024-06-14 11:56:04,262 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 260 predicate places. [2024-06-14 11:56:04,262 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 267 transitions, 3385 flow [2024-06-14 11:56:04,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:04,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:04,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:04,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 11:56:04,263 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:04,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:04,263 INFO L85 PathProgramCache]: Analyzing trace with hash 210271281, now seen corresponding path program 16 times [2024-06-14 11:56:04,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:04,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061596427] [2024-06-14 11:56:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:04,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:05,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:05,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061596427] [2024-06-14 11:56:05,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061596427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:05,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:05,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:05,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447362370] [2024-06-14 11:56:05,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:05,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:05,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:05,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:05,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 267 transitions, 3385 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:05,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:05,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:05,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:05,807 INFO L124 PetriNetUnfolderBase]: 544/981 cut-off events. [2024-06-14 11:56:05,807 INFO L125 PetriNetUnfolderBase]: For 145542/145542 co-relation queries the response was YES. [2024-06-14 11:56:05,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10185 conditions, 981 events. 544/981 cut-off events. For 145542/145542 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4907 event pairs, 52 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 10040. Up to 787 conditions per place. [2024-06-14 11:56:05,817 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 225 selfloop transitions, 54 changer transitions 0/282 dead transitions. [2024-06-14 11:56:05,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 282 transitions, 4296 flow [2024-06-14 11:56:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 11:56:05,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:56:05,818 INFO L175 Difference]: Start difference. First operand has 292 places, 267 transitions, 3385 flow. Second operand 10 states and 130 transitions. [2024-06-14 11:56:05,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 282 transitions, 4296 flow [2024-06-14 11:56:06,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 282 transitions, 4096 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:06,273 INFO L231 Difference]: Finished difference. Result has 294 places, 270 transitions, 3365 flow [2024-06-14 11:56:06,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3185, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3365, PETRI_PLACES=294, PETRI_TRANSITIONS=270} [2024-06-14 11:56:06,273 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 262 predicate places. [2024-06-14 11:56:06,273 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 270 transitions, 3365 flow [2024-06-14 11:56:06,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:06,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:06,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:06,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 11:56:06,274 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:06,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash 779548639, now seen corresponding path program 17 times [2024-06-14 11:56:06,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:06,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585323151] [2024-06-14 11:56:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:06,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:07,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585323151] [2024-06-14 11:56:07,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585323151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:07,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:07,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:07,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790182722] [2024-06-14 11:56:07,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:07,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:07,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:07,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:07,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 270 transitions, 3365 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:07,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:07,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:07,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:07,769 INFO L124 PetriNetUnfolderBase]: 550/991 cut-off events. [2024-06-14 11:56:07,769 INFO L125 PetriNetUnfolderBase]: For 152509/152509 co-relation queries the response was YES. [2024-06-14 11:56:07,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10243 conditions, 991 events. 550/991 cut-off events. For 152509/152509 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4989 event pairs, 51 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 10097. Up to 906 conditions per place. [2024-06-14 11:56:07,779 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 259 selfloop transitions, 21 changer transitions 0/283 dead transitions. [2024-06-14 11:56:07,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 283 transitions, 4061 flow [2024-06-14 11:56:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:56:07,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:56:07,780 INFO L175 Difference]: Start difference. First operand has 294 places, 270 transitions, 3365 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:56:07,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 283 transitions, 4061 flow [2024-06-14 11:56:08,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 283 transitions, 3905 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:08,240 INFO L231 Difference]: Finished difference. Result has 297 places, 273 transitions, 3366 flow [2024-06-14 11:56:08,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3366, PETRI_PLACES=297, PETRI_TRANSITIONS=273} [2024-06-14 11:56:08,241 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-14 11:56:08,241 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 273 transitions, 3366 flow [2024-06-14 11:56:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:08,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:08,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:08,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 11:56:08,242 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:08,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash 217688031, now seen corresponding path program 18 times [2024-06-14 11:56:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:08,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820524244] [2024-06-14 11:56:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820524244] [2024-06-14 11:56:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820524244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:09,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:09,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:09,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418579841] [2024-06-14 11:56:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:09,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:09,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:09,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 273 transitions, 3366 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:09,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:09,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:09,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:09,814 INFO L124 PetriNetUnfolderBase]: 548/988 cut-off events. [2024-06-14 11:56:09,814 INFO L125 PetriNetUnfolderBase]: For 147620/147620 co-relation queries the response was YES. [2024-06-14 11:56:09,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10065 conditions, 988 events. 548/988 cut-off events. For 147620/147620 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4964 event pairs, 52 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 9918. Up to 767 conditions per place. [2024-06-14 11:56:09,823 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 214 selfloop transitions, 68 changer transitions 0/285 dead transitions. [2024-06-14 11:56:09,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 285 transitions, 4224 flow [2024-06-14 11:56:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 11:56:09,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-14 11:56:09,824 INFO L175 Difference]: Start difference. First operand has 297 places, 273 transitions, 3366 flow. Second operand 10 states and 133 transitions. [2024-06-14 11:56:09,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 285 transitions, 4224 flow [2024-06-14 11:56:10,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 285 transitions, 4067 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:10,274 INFO L231 Difference]: Finished difference. Result has 299 places, 273 transitions, 3350 flow [2024-06-14 11:56:10,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3350, PETRI_PLACES=299, PETRI_TRANSITIONS=273} [2024-06-14 11:56:10,274 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-14 11:56:10,274 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 273 transitions, 3350 flow [2024-06-14 11:56:10,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:10,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:10,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:10,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 11:56:10,275 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:10,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 466771574, now seen corresponding path program 9 times [2024-06-14 11:56:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:10,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710298720] [2024-06-14 11:56:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:11,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:11,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710298720] [2024-06-14 11:56:11,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710298720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:11,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:11,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:11,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791906434] [2024-06-14 11:56:11,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:11,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:11,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:11,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:11,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:11,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:11,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 273 transitions, 3350 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:11,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:11,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:11,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:11,983 INFO L124 PetriNetUnfolderBase]: 546/985 cut-off events. [2024-06-14 11:56:11,984 INFO L125 PetriNetUnfolderBase]: For 146357/146357 co-relation queries the response was YES. [2024-06-14 11:56:11,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9978 conditions, 985 events. 546/985 cut-off events. For 146357/146357 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4956 event pairs, 52 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 9830. Up to 703 conditions per place. [2024-06-14 11:56:11,994 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 84 changer transitions 0/286 dead transitions. [2024-06-14 11:56:11,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 286 transitions, 4230 flow [2024-06-14 11:56:11,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:56:11,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:56:11,995 INFO L175 Difference]: Start difference. First operand has 299 places, 273 transitions, 3350 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:56:11,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 286 transitions, 4230 flow [2024-06-14 11:56:12,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 286 transitions, 4101 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:12,420 INFO L231 Difference]: Finished difference. Result has 301 places, 275 transitions, 3462 flow [2024-06-14 11:56:12,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3221, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3462, PETRI_PLACES=301, PETRI_TRANSITIONS=275} [2024-06-14 11:56:12,421 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 269 predicate places. [2024-06-14 11:56:12,421 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 275 transitions, 3462 flow [2024-06-14 11:56:12,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:12,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:12,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:12,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 11:56:12,421 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:12,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash 465858988, now seen corresponding path program 5 times [2024-06-14 11:56:12,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:12,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122651231] [2024-06-14 11:56:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:12,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:13,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:13,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122651231] [2024-06-14 11:56:13,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122651231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:13,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:13,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:13,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291896680] [2024-06-14 11:56:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:13,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:13,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:13,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:13,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 275 transitions, 3462 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:13,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:13,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:13,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:14,094 INFO L124 PetriNetUnfolderBase]: 544/982 cut-off events. [2024-06-14 11:56:14,095 INFO L125 PetriNetUnfolderBase]: For 144527/144527 co-relation queries the response was YES. [2024-06-14 11:56:14,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9947 conditions, 982 events. 544/982 cut-off events. For 144527/144527 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4935 event pairs, 48 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 9798. Up to 746 conditions per place. [2024-06-14 11:56:14,106 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 213 selfloop transitions, 70 changer transitions 0/286 dead transitions. [2024-06-14 11:56:14,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 286 transitions, 4292 flow [2024-06-14 11:56:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:56:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:56:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 11:56:14,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-14 11:56:14,107 INFO L175 Difference]: Start difference. First operand has 301 places, 275 transitions, 3462 flow. Second operand 9 states and 121 transitions. [2024-06-14 11:56:14,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 286 transitions, 4292 flow [2024-06-14 11:56:14,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 286 transitions, 4067 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:14,532 INFO L231 Difference]: Finished difference. Result has 302 places, 277 transitions, 3448 flow [2024-06-14 11:56:14,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3448, PETRI_PLACES=302, PETRI_TRANSITIONS=277} [2024-06-14 11:56:14,533 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-14 11:56:14,533 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 277 transitions, 3448 flow [2024-06-14 11:56:14,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:14,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:14,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:14,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 11:56:14,534 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:14,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:14,534 INFO L85 PathProgramCache]: Analyzing trace with hash 465859329, now seen corresponding path program 4 times [2024-06-14 11:56:14,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:14,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046142718] [2024-06-14 11:56:14,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:14,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:15,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046142718] [2024-06-14 11:56:15,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046142718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:15,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:15,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:15,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636959145] [2024-06-14 11:56:15,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:15,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:15,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:15,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:15,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:16,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:56:16,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 277 transitions, 3448 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:16,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:16,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:56:16,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:16,348 INFO L124 PetriNetUnfolderBase]: 517/957 cut-off events. [2024-06-14 11:56:16,349 INFO L125 PetriNetUnfolderBase]: For 153439/153441 co-relation queries the response was YES. [2024-06-14 11:56:16,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9775 conditions, 957 events. 517/957 cut-off events. For 153439/153441 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4967 event pairs, 45 based on Foata normal form. 4/957 useless extension candidates. Maximal degree in co-relation 9625. Up to 761 conditions per place. [2024-06-14 11:56:16,360 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 214 selfloop transitions, 36 changer transitions 0/287 dead transitions. [2024-06-14 11:56:16,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 287 transitions, 3998 flow [2024-06-14 11:56:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:56:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:56:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 11:56:16,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-14 11:56:16,361 INFO L175 Difference]: Start difference. First operand has 302 places, 277 transitions, 3448 flow. Second operand 9 states and 122 transitions. [2024-06-14 11:56:16,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 287 transitions, 3998 flow [2024-06-14 11:56:16,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 287 transitions, 3804 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:16,924 INFO L231 Difference]: Finished difference. Result has 303 places, 278 transitions, 3362 flow [2024-06-14 11:56:16,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3362, PETRI_PLACES=303, PETRI_TRANSITIONS=278} [2024-06-14 11:56:16,924 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 271 predicate places. [2024-06-14 11:56:16,925 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 278 transitions, 3362 flow [2024-06-14 11:56:16,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:16,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:16,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:16,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 11:56:16,925 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:16,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:16,926 INFO L85 PathProgramCache]: Analyzing trace with hash 210069254, now seen corresponding path program 10 times [2024-06-14 11:56:16,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:16,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782519429] [2024-06-14 11:56:16,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:16,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:18,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782519429] [2024-06-14 11:56:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782519429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:18,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254955062] [2024-06-14 11:56:18,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:18,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:18,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:18,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:18,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:18,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:18,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 278 transitions, 3362 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:18,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:18,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:18,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:18,639 INFO L124 PetriNetUnfolderBase]: 551/997 cut-off events. [2024-06-14 11:56:18,640 INFO L125 PetriNetUnfolderBase]: For 148024/148024 co-relation queries the response was YES. [2024-06-14 11:56:18,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9918 conditions, 997 events. 551/997 cut-off events. For 148024/148024 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5048 event pairs, 53 based on Foata normal form. 1/993 useless extension candidates. Maximal degree in co-relation 9768. Up to 820 conditions per place. [2024-06-14 11:56:18,649 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 242 selfloop transitions, 46 changer transitions 0/291 dead transitions. [2024-06-14 11:56:18,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 291 transitions, 4106 flow [2024-06-14 11:56:18,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:56:18,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:56:18,650 INFO L175 Difference]: Start difference. First operand has 303 places, 278 transitions, 3362 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:56:18,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 291 transitions, 4106 flow [2024-06-14 11:56:19,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 291 transitions, 4008 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:19,085 INFO L231 Difference]: Finished difference. Result has 306 places, 280 transitions, 3421 flow [2024-06-14 11:56:19,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3421, PETRI_PLACES=306, PETRI_TRANSITIONS=280} [2024-06-14 11:56:19,085 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-06-14 11:56:19,085 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 280 transitions, 3421 flow [2024-06-14 11:56:19,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:19,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:19,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:19,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 11:56:19,086 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:19,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash -852303555, now seen corresponding path program 19 times [2024-06-14 11:56:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:19,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951811916] [2024-06-14 11:56:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:20,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:20,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951811916] [2024-06-14 11:56:20,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951811916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:20,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:20,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:20,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023315884] [2024-06-14 11:56:20,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:20,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:20,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:20,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:20,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:20,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 280 transitions, 3421 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:20,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:20,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:20,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:20,578 INFO L124 PetriNetUnfolderBase]: 549/994 cut-off events. [2024-06-14 11:56:20,578 INFO L125 PetriNetUnfolderBase]: For 146034/146034 co-relation queries the response was YES. [2024-06-14 11:56:20,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9819 conditions, 994 events. 549/994 cut-off events. For 146034/146034 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5055 event pairs, 53 based on Foata normal form. 1/990 useless extension candidates. Maximal degree in co-relation 9668. Up to 799 conditions per place. [2024-06-14 11:56:20,590 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 233 selfloop transitions, 55 changer transitions 0/291 dead transitions. [2024-06-14 11:56:20,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 291 transitions, 4109 flow [2024-06-14 11:56:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:20,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 11:56:20,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-14 11:56:20,591 INFO L175 Difference]: Start difference. First operand has 306 places, 280 transitions, 3421 flow. Second operand 10 states and 129 transitions. [2024-06-14 11:56:20,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 291 transitions, 4109 flow [2024-06-14 11:56:21,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 291 transitions, 3940 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:21,078 INFO L231 Difference]: Finished difference. Result has 308 places, 280 transitions, 3367 flow [2024-06-14 11:56:21,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3367, PETRI_PLACES=308, PETRI_TRANSITIONS=280} [2024-06-14 11:56:21,078 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-14 11:56:21,078 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 280 transitions, 3367 flow [2024-06-14 11:56:21,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:21,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:21,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:21,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 11:56:21,079 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:21,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash -852303276, now seen corresponding path program 6 times [2024-06-14 11:56:21,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:21,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561003800] [2024-06-14 11:56:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:21,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:22,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:22,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561003800] [2024-06-14 11:56:22,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561003800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:22,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:22,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:56:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24857511] [2024-06-14 11:56:22,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:22,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:56:22,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:22,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:56:22,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:56:22,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:22,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 280 transitions, 3367 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:22,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:22,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:22,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:22,533 INFO L124 PetriNetUnfolderBase]: 547/991 cut-off events. [2024-06-14 11:56:22,533 INFO L125 PetriNetUnfolderBase]: For 144273/144273 co-relation queries the response was YES. [2024-06-14 11:56:22,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9677 conditions, 991 events. 547/991 cut-off events. For 144273/144273 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5012 event pairs, 48 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 9525. Up to 877 conditions per place. [2024-06-14 11:56:22,545 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 256 selfloop transitions, 29 changer transitions 0/288 dead transitions. [2024-06-14 11:56:22,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 288 transitions, 3955 flow [2024-06-14 11:56:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:56:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:56:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 11:56:22,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 11:56:22,546 INFO L175 Difference]: Start difference. First operand has 308 places, 280 transitions, 3367 flow. Second operand 9 states and 111 transitions. [2024-06-14 11:56:22,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 288 transitions, 3955 flow [2024-06-14 11:56:22,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 288 transitions, 3828 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:23,020 INFO L231 Difference]: Finished difference. Result has 309 places, 280 transitions, 3304 flow [2024-06-14 11:56:23,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3240, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3304, PETRI_PLACES=309, PETRI_TRANSITIONS=280} [2024-06-14 11:56:23,020 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-14 11:56:23,021 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 280 transitions, 3304 flow [2024-06-14 11:56:23,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:23,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:23,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 11:56:23,021 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:23,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -596732867, now seen corresponding path program 20 times [2024-06-14 11:56:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397723857] [2024-06-14 11:56:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:23,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:23,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397723857] [2024-06-14 11:56:23,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397723857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:23,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:23,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:23,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509760391] [2024-06-14 11:56:23,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:23,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:23,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:23,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:23,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:24,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:24,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 280 transitions, 3304 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:24,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:24,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:24,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:24,469 INFO L124 PetriNetUnfolderBase]: 548/993 cut-off events. [2024-06-14 11:56:24,469 INFO L125 PetriNetUnfolderBase]: For 147545/147545 co-relation queries the response was YES. [2024-06-14 11:56:24,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9586 conditions, 993 events. 548/993 cut-off events. For 147545/147545 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5050 event pairs, 51 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 9433. Up to 478 conditions per place. [2024-06-14 11:56:24,481 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 166 selfloop transitions, 128 changer transitions 0/297 dead transitions. [2024-06-14 11:56:24,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 297 transitions, 4516 flow [2024-06-14 11:56:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:24,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-14 11:56:24,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 11:56:24,482 INFO L175 Difference]: Start difference. First operand has 309 places, 280 transitions, 3304 flow. Second operand 10 states and 140 transitions. [2024-06-14 11:56:24,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 297 transitions, 4516 flow [2024-06-14 11:56:25,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 297 transitions, 4387 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-14 11:56:25,076 INFO L231 Difference]: Finished difference. Result has 310 places, 284 transitions, 3623 flow [2024-06-14 11:56:25,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3187, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3623, PETRI_PLACES=310, PETRI_TRANSITIONS=284} [2024-06-14 11:56:25,077 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-14 11:56:25,077 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 284 transitions, 3623 flow [2024-06-14 11:56:25,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:25,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:25,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:25,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 11:56:25,077 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:25,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash -844884325, now seen corresponding path program 5 times [2024-06-14 11:56:25,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:25,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102048227] [2024-06-14 11:56:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:25,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:26,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102048227] [2024-06-14 11:56:26,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102048227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:26,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:26,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:26,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346425620] [2024-06-14 11:56:26,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:26,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:26,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:26,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 11:56:26,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 284 transitions, 3623 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:26,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:26,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 11:56:26,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:26,960 INFO L124 PetriNetUnfolderBase]: 512/953 cut-off events. [2024-06-14 11:56:26,960 INFO L125 PetriNetUnfolderBase]: For 143832/143834 co-relation queries the response was YES. [2024-06-14 11:56:26,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9399 conditions, 953 events. 512/953 cut-off events. For 143832/143834 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4974 event pairs, 43 based on Foata normal form. 4/953 useless extension candidates. Maximal degree in co-relation 9246. Up to 793 conditions per place. [2024-06-14 11:56:26,977 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 234 selfloop transitions, 23 changer transitions 0/294 dead transitions. [2024-06-14 11:56:26,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 294 transitions, 4159 flow [2024-06-14 11:56:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:56:26,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 11:56:26,978 INFO L175 Difference]: Start difference. First operand has 310 places, 284 transitions, 3623 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:56:26,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 294 transitions, 4159 flow [2024-06-14 11:56:27,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 294 transitions, 3808 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:27,475 INFO L231 Difference]: Finished difference. Result has 312 places, 284 transitions, 3322 flow [2024-06-14 11:56:27,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3322, PETRI_PLACES=312, PETRI_TRANSITIONS=284} [2024-06-14 11:56:27,476 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 280 predicate places. [2024-06-14 11:56:27,476 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 284 transitions, 3322 flow [2024-06-14 11:56:27,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:27,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:27,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:27,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 11:56:27,477 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:27,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash -852311212, now seen corresponding path program 11 times [2024-06-14 11:56:27,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:27,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777414738] [2024-06-14 11:56:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:28,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:28,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777414738] [2024-06-14 11:56:28,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777414738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:28,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:28,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:28,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076946392] [2024-06-14 11:56:28,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:28,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:28,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:28,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:28,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:28,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:28,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 284 transitions, 3322 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:28,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:28,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:28,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:29,399 INFO L124 PetriNetUnfolderBase]: 543/985 cut-off events. [2024-06-14 11:56:29,399 INFO L125 PetriNetUnfolderBase]: For 131412/131412 co-relation queries the response was YES. [2024-06-14 11:56:29,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9105 conditions, 985 events. 543/985 cut-off events. For 131412/131412 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5000 event pairs, 51 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 8952. Up to 799 conditions per place. [2024-06-14 11:56:29,412 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 242 selfloop transitions, 50 changer transitions 0/295 dead transitions. [2024-06-14 11:56:29,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 295 transitions, 4026 flow [2024-06-14 11:56:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:56:29,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 11:56:29,413 INFO L175 Difference]: Start difference. First operand has 312 places, 284 transitions, 3322 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:56:29,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 295 transitions, 4026 flow [2024-06-14 11:56:29,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 295 transitions, 3805 flow, removed 35 selfloop flow, removed 14 redundant places. [2024-06-14 11:56:29,886 INFO L231 Difference]: Finished difference. Result has 308 places, 284 transitions, 3206 flow [2024-06-14 11:56:29,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3101, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3206, PETRI_PLACES=308, PETRI_TRANSITIONS=284} [2024-06-14 11:56:29,886 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-14 11:56:29,886 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 284 transitions, 3206 flow [2024-06-14 11:56:29,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:29,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:29,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 11:56:29,887 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:29,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1344235359, now seen corresponding path program 1 times [2024-06-14 11:56:29,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:29,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654295591] [2024-06-14 11:56:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:30,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:30,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654295591] [2024-06-14 11:56:30,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654295591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:30,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:30,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:30,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287842246] [2024-06-14 11:56:30,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:30,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:30,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:30,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:30,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 284 transitions, 3206 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:30,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:30,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:30,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:31,247 INFO L124 PetriNetUnfolderBase]: 547/993 cut-off events. [2024-06-14 11:56:31,247 INFO L125 PetriNetUnfolderBase]: For 138336/138336 co-relation queries the response was YES. [2024-06-14 11:56:31,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9065 conditions, 993 events. 547/993 cut-off events. For 138336/138336 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5074 event pairs, 19 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 8914. Up to 850 conditions per place. [2024-06-14 11:56:31,257 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 272 selfloop transitions, 30 changer transitions 0/305 dead transitions. [2024-06-14 11:56:31,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 305 transitions, 3888 flow [2024-06-14 11:56:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:56:31,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 11:56:31,260 INFO L175 Difference]: Start difference. First operand has 308 places, 284 transitions, 3206 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:56:31,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 305 transitions, 3888 flow [2024-06-14 11:56:31,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 305 transitions, 3748 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 11:56:31,683 INFO L231 Difference]: Finished difference. Result has 308 places, 285 transitions, 3158 flow [2024-06-14 11:56:31,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3158, PETRI_PLACES=308, PETRI_TRANSITIONS=285} [2024-06-14 11:56:31,684 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-14 11:56:31,684 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 285 transitions, 3158 flow [2024-06-14 11:56:31,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:31,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:31,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:31,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 11:56:31,685 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:31,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:31,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2096562853, now seen corresponding path program 2 times [2024-06-14 11:56:31,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:31,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610947959] [2024-06-14 11:56:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:31,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:32,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610947959] [2024-06-14 11:56:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610947959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:32,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:32,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907401896] [2024-06-14 11:56:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:32,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:32,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:32,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:32,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:32,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:32,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 285 transitions, 3158 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:32,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:32,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:32,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:33,157 INFO L124 PetriNetUnfolderBase]: 551/1001 cut-off events. [2024-06-14 11:56:33,157 INFO L125 PetriNetUnfolderBase]: For 141073/141073 co-relation queries the response was YES. [2024-06-14 11:56:33,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9072 conditions, 1001 events. 551/1001 cut-off events. For 141073/141073 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5121 event pairs, 36 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 8921. Up to 875 conditions per place. [2024-06-14 11:56:33,168 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 271 selfloop transitions, 31 changer transitions 0/305 dead transitions. [2024-06-14 11:56:33,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 305 transitions, 3840 flow [2024-06-14 11:56:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:56:33,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-14 11:56:33,169 INFO L175 Difference]: Start difference. First operand has 308 places, 285 transitions, 3158 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:56:33,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 305 transitions, 3840 flow [2024-06-14 11:56:33,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 305 transitions, 3758 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:33,576 INFO L231 Difference]: Finished difference. Result has 310 places, 286 transitions, 3172 flow [2024-06-14 11:56:33,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3172, PETRI_PLACES=310, PETRI_TRANSITIONS=286} [2024-06-14 11:56:33,577 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-14 11:56:33,577 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 286 transitions, 3172 flow [2024-06-14 11:56:33,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:33,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:33,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:33,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 11:56:33,578 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:33,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:33,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2083113273, now seen corresponding path program 3 times [2024-06-14 11:56:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:33,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575524035] [2024-06-14 11:56:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:33,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:34,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:34,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575524035] [2024-06-14 11:56:34,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575524035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:34,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:34,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:34,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966063815] [2024-06-14 11:56:34,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:34,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:34,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:34,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 286 transitions, 3172 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:34,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:34,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:34,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:35,045 INFO L124 PetriNetUnfolderBase]: 555/1009 cut-off events. [2024-06-14 11:56:35,045 INFO L125 PetriNetUnfolderBase]: For 145982/145982 co-relation queries the response was YES. [2024-06-14 11:56:35,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 1009 events. 555/1009 cut-off events. For 145982/145982 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5178 event pairs, 34 based on Foata normal form. 2/1009 useless extension candidates. Maximal degree in co-relation 8985. Up to 874 conditions per place. [2024-06-14 11:56:35,056 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 265 selfloop transitions, 40 changer transitions 0/308 dead transitions. [2024-06-14 11:56:35,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 308 transitions, 3950 flow [2024-06-14 11:56:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:35,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:56:35,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:56:35,057 INFO L175 Difference]: Start difference. First operand has 310 places, 286 transitions, 3172 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:56:35,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 308 transitions, 3950 flow [2024-06-14 11:56:35,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 308 transitions, 3864 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:35,449 INFO L231 Difference]: Finished difference. Result has 313 places, 292 transitions, 3314 flow [2024-06-14 11:56:35,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3314, PETRI_PLACES=313, PETRI_TRANSITIONS=292} [2024-06-14 11:56:35,450 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-06-14 11:56:35,450 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 292 transitions, 3314 flow [2024-06-14 11:56:35,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:35,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:35,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:35,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 11:56:35,451 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:35,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2096567813, now seen corresponding path program 1 times [2024-06-14 11:56:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:35,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944592665] [2024-06-14 11:56:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:35,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:36,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:36,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944592665] [2024-06-14 11:56:36,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944592665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:36,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:36,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:36,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321734589] [2024-06-14 11:56:36,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:36,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:36,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:36,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:36,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:36,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:36,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 292 transitions, 3314 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:36,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:36,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:36,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:37,338 INFO L124 PetriNetUnfolderBase]: 558/1014 cut-off events. [2024-06-14 11:56:37,338 INFO L125 PetriNetUnfolderBase]: For 144101/144101 co-relation queries the response was YES. [2024-06-14 11:56:37,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9238 conditions, 1014 events. 558/1014 cut-off events. For 144101/144101 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5194 event pairs, 35 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 9084. Up to 888 conditions per place. [2024-06-14 11:56:37,349 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 276 selfloop transitions, 34 changer transitions 0/313 dead transitions. [2024-06-14 11:56:37,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 313 transitions, 4042 flow [2024-06-14 11:56:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:37,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:56:37,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 11:56:37,350 INFO L175 Difference]: Start difference. First operand has 313 places, 292 transitions, 3314 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:56:37,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 313 transitions, 4042 flow [2024-06-14 11:56:37,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 313 transitions, 3909 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-14 11:56:37,758 INFO L231 Difference]: Finished difference. Result has 318 places, 294 transitions, 3316 flow [2024-06-14 11:56:37,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3316, PETRI_PLACES=318, PETRI_TRANSITIONS=294} [2024-06-14 11:56:37,759 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-14 11:56:37,759 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 294 transitions, 3316 flow [2024-06-14 11:56:37,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:37,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:37,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:37,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 11:56:37,759 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:37,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash 352330127, now seen corresponding path program 2 times [2024-06-14 11:56:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336879091] [2024-06-14 11:56:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:39,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336879091] [2024-06-14 11:56:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336879091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:39,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906872542] [2024-06-14 11:56:39,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:39,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:39,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:39,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 294 transitions, 3316 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:39,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:39,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:39,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:40,021 INFO L124 PetriNetUnfolderBase]: 566/1031 cut-off events. [2024-06-14 11:56:40,021 INFO L125 PetriNetUnfolderBase]: For 150166/150166 co-relation queries the response was YES. [2024-06-14 11:56:40,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9326 conditions, 1031 events. 566/1031 cut-off events. For 150166/150166 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5317 event pairs, 33 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 9171. Up to 870 conditions per place. [2024-06-14 11:56:40,033 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 263 selfloop transitions, 49 changer transitions 0/315 dead transitions. [2024-06-14 11:56:40,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 315 transitions, 4310 flow [2024-06-14 11:56:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:56:40,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-14 11:56:40,034 INFO L175 Difference]: Start difference. First operand has 318 places, 294 transitions, 3316 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:56:40,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 315 transitions, 4310 flow [2024-06-14 11:56:40,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 315 transitions, 4191 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:40,469 INFO L231 Difference]: Finished difference. Result has 320 places, 298 transitions, 3428 flow [2024-06-14 11:56:40,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3428, PETRI_PLACES=320, PETRI_TRANSITIONS=298} [2024-06-14 11:56:40,470 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 288 predicate places. [2024-06-14 11:56:40,470 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 298 transitions, 3428 flow [2024-06-14 11:56:40,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:40,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:40,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:40,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 11:56:40,470 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:40,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:40,470 INFO L85 PathProgramCache]: Analyzing trace with hash 352336885, now seen corresponding path program 1 times [2024-06-14 11:56:40,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:40,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929430704] [2024-06-14 11:56:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:41,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929430704] [2024-06-14 11:56:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929430704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:41,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:41,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:41,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437700116] [2024-06-14 11:56:41,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:41,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:41,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:41,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:41,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:41,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:41,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 298 transitions, 3428 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:41,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:41,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:41,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:42,387 INFO L124 PetriNetUnfolderBase]: 572/1041 cut-off events. [2024-06-14 11:56:42,387 INFO L125 PetriNetUnfolderBase]: For 159057/159057 co-relation queries the response was YES. [2024-06-14 11:56:42,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9474 conditions, 1041 events. 572/1041 cut-off events. For 159057/159057 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5386 event pairs, 32 based on Foata normal form. 2/1041 useless extension candidates. Maximal degree in co-relation 9318. Up to 884 conditions per place. [2024-06-14 11:56:42,399 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 267 selfloop transitions, 47 changer transitions 0/317 dead transitions. [2024-06-14 11:56:42,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 317 transitions, 4170 flow [2024-06-14 11:56:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:56:42,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:56:42,400 INFO L175 Difference]: Start difference. First operand has 320 places, 298 transitions, 3428 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:56:42,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 317 transitions, 4170 flow [2024-06-14 11:56:42,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 317 transitions, 4029 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:42,802 INFO L231 Difference]: Finished difference. Result has 324 places, 301 transitions, 3467 flow [2024-06-14 11:56:42,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3287, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3467, PETRI_PLACES=324, PETRI_TRANSITIONS=301} [2024-06-14 11:56:42,802 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-14 11:56:42,802 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 301 transitions, 3467 flow [2024-06-14 11:56:42,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:42,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:42,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:42,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 11:56:42,802 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:42,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1246650841, now seen corresponding path program 3 times [2024-06-14 11:56:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:42,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380188446] [2024-06-14 11:56:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:42,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:44,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:44,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380188446] [2024-06-14 11:56:44,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380188446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:44,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:44,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:44,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398790606] [2024-06-14 11:56:44,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:44,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:44,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:44,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:44,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:44,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 301 transitions, 3467 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:44,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:44,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:44,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:45,004 INFO L124 PetriNetUnfolderBase]: 570/1038 cut-off events. [2024-06-14 11:56:45,004 INFO L125 PetriNetUnfolderBase]: For 150586/150586 co-relation queries the response was YES. [2024-06-14 11:56:45,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9364 conditions, 1038 events. 570/1038 cut-off events. For 150586/150586 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5384 event pairs, 32 based on Foata normal form. 1/1037 useless extension candidates. Maximal degree in co-relation 9206. Up to 878 conditions per place. [2024-06-14 11:56:45,016 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 265 selfloop transitions, 49 changer transitions 0/317 dead transitions. [2024-06-14 11:56:45,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 317 transitions, 4135 flow [2024-06-14 11:56:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:56:45,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 11:56:45,017 INFO L175 Difference]: Start difference. First operand has 324 places, 301 transitions, 3467 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:56:45,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 317 transitions, 4135 flow [2024-06-14 11:56:45,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 317 transitions, 3959 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:45,453 INFO L231 Difference]: Finished difference. Result has 326 places, 301 transitions, 3394 flow [2024-06-14 11:56:45,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3291, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=326, PETRI_TRANSITIONS=301} [2024-06-14 11:56:45,453 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-14 11:56:45,453 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 301 transitions, 3394 flow [2024-06-14 11:56:45,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:45,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:45,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:45,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 11:56:45,454 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:45,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:45,454 INFO L85 PathProgramCache]: Analyzing trace with hash 517791321, now seen corresponding path program 4 times [2024-06-14 11:56:45,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:45,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685292611] [2024-06-14 11:56:45,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:45,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:46,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685292611] [2024-06-14 11:56:46,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685292611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:46,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:46,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:56:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697522978] [2024-06-14 11:56:46,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:46,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:56:46,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:56:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:56:46,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:46,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 301 transitions, 3394 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:46,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:46,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:46,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:47,002 INFO L124 PetriNetUnfolderBase]: 574/1046 cut-off events. [2024-06-14 11:56:47,002 INFO L125 PetriNetUnfolderBase]: For 159410/159410 co-relation queries the response was YES. [2024-06-14 11:56:47,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9377 conditions, 1046 events. 574/1046 cut-off events. For 159410/159410 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5427 event pairs, 34 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 9218. Up to 900 conditions per place. [2024-06-14 11:56:47,013 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 274 selfloop transitions, 41 changer transitions 0/318 dead transitions. [2024-06-14 11:56:47,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 318 transitions, 4154 flow [2024-06-14 11:56:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:56:47,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:56:47,015 INFO L175 Difference]: Start difference. First operand has 326 places, 301 transitions, 3394 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:56:47,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 318 transitions, 4154 flow [2024-06-14 11:56:47,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 318 transitions, 4049 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:56:47,429 INFO L231 Difference]: Finished difference. Result has 327 places, 304 transitions, 3478 flow [2024-06-14 11:56:47,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3289, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3478, PETRI_PLACES=327, PETRI_TRANSITIONS=304} [2024-06-14 11:56:47,429 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-14 11:56:47,429 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 304 transitions, 3478 flow [2024-06-14 11:56:47,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:47,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:47,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 11:56:47,430 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:47,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash 524232129, now seen corresponding path program 2 times [2024-06-14 11:56:47,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:47,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313031123] [2024-06-14 11:56:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:48,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:48,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313031123] [2024-06-14 11:56:48,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313031123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:48,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:48,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682799113] [2024-06-14 11:56:48,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:48,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:48,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:48,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:49,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:49,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 304 transitions, 3478 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:49,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:49,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:49,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:49,524 INFO L124 PetriNetUnfolderBase]: 577/1051 cut-off events. [2024-06-14 11:56:49,524 INFO L125 PetriNetUnfolderBase]: For 157132/157132 co-relation queries the response was YES. [2024-06-14 11:56:49,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9460 conditions, 1051 events. 577/1051 cut-off events. For 157132/157132 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5471 event pairs, 34 based on Foata normal form. 1/1050 useless extension candidates. Maximal degree in co-relation 9299. Up to 857 conditions per place. [2024-06-14 11:56:49,538 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 258 selfloop transitions, 59 changer transitions 0/320 dead transitions. [2024-06-14 11:56:49,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 320 transitions, 4194 flow [2024-06-14 11:56:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:56:49,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:56:49,539 INFO L175 Difference]: Start difference. First operand has 327 places, 304 transitions, 3478 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:56:49,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 320 transitions, 4194 flow [2024-06-14 11:56:49,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 320 transitions, 4036 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:49,964 INFO L231 Difference]: Finished difference. Result has 331 places, 306 transitions, 3495 flow [2024-06-14 11:56:49,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3320, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3495, PETRI_PLACES=331, PETRI_TRANSITIONS=306} [2024-06-14 11:56:49,965 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2024-06-14 11:56:49,965 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 306 transitions, 3495 flow [2024-06-14 11:56:49,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:49,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:49,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:49,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 11:56:49,965 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:49,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash 524231881, now seen corresponding path program 4 times [2024-06-14 11:56:49,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:49,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626043041] [2024-06-14 11:56:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:49,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:51,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:51,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626043041] [2024-06-14 11:56:51,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626043041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:51,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:51,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:51,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553993026] [2024-06-14 11:56:51,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:51,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:51,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:51,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:51,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 306 transitions, 3495 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:51,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:51,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:51,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:52,045 INFO L124 PetriNetUnfolderBase]: 595/1084 cut-off events. [2024-06-14 11:56:52,045 INFO L125 PetriNetUnfolderBase]: For 178236/178236 co-relation queries the response was YES. [2024-06-14 11:56:52,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10156 conditions, 1084 events. 595/1084 cut-off events. For 178236/178236 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5685 event pairs, 34 based on Foata normal form. 1/1083 useless extension candidates. Maximal degree in co-relation 9994. Up to 857 conditions per place. [2024-06-14 11:56:52,059 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 261 selfloop transitions, 67 changer transitions 0/331 dead transitions. [2024-06-14 11:56:52,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 331 transitions, 5097 flow [2024-06-14 11:56:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 11:56:52,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-14 11:56:52,060 INFO L175 Difference]: Start difference. First operand has 331 places, 306 transitions, 3495 flow. Second operand 11 states and 144 transitions. [2024-06-14 11:56:52,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 331 transitions, 5097 flow [2024-06-14 11:56:52,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 331 transitions, 4950 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 11:56:52,597 INFO L231 Difference]: Finished difference. Result has 333 places, 314 transitions, 3755 flow [2024-06-14 11:56:52,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3348, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3755, PETRI_PLACES=333, PETRI_TRANSITIONS=314} [2024-06-14 11:56:52,597 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-14 11:56:52,597 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 314 transitions, 3755 flow [2024-06-14 11:56:52,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:52,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:52,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:52,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 11:56:52,598 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:52,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash 524462521, now seen corresponding path program 5 times [2024-06-14 11:56:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692144668] [2024-06-14 11:56:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:52,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:53,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:53,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692144668] [2024-06-14 11:56:53,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692144668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:53,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:53,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:53,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135986949] [2024-06-14 11:56:53,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:53,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:53,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:53,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:53,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:54,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:54,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 314 transitions, 3755 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:54,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:54,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:54,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:54,529 INFO L124 PetriNetUnfolderBase]: 606/1104 cut-off events. [2024-06-14 11:56:54,529 INFO L125 PetriNetUnfolderBase]: For 194740/194740 co-relation queries the response was YES. [2024-06-14 11:56:54,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10604 conditions, 1104 events. 606/1104 cut-off events. For 194740/194740 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5815 event pairs, 34 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 10441. Up to 823 conditions per place. [2024-06-14 11:56:54,540 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 257 selfloop transitions, 76 changer transitions 0/336 dead transitions. [2024-06-14 11:56:54,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 336 transitions, 5119 flow [2024-06-14 11:56:54,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 11:56:54,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 11:56:54,541 INFO L175 Difference]: Start difference. First operand has 333 places, 314 transitions, 3755 flow. Second operand 11 states and 145 transitions. [2024-06-14 11:56:54,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 336 transitions, 5119 flow [2024-06-14 11:56:55,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 336 transitions, 4916 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-14 11:56:55,033 INFO L231 Difference]: Finished difference. Result has 339 places, 320 transitions, 3944 flow [2024-06-14 11:56:55,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3558, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3944, PETRI_PLACES=339, PETRI_TRANSITIONS=320} [2024-06-14 11:56:55,034 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 307 predicate places. [2024-06-14 11:56:55,034 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 320 transitions, 3944 flow [2024-06-14 11:56:55,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:55,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:55,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:55,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 11:56:55,034 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:55,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1917296199, now seen corresponding path program 6 times [2024-06-14 11:56:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:55,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505861194] [2024-06-14 11:56:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:56,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:56,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505861194] [2024-06-14 11:56:56,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505861194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:56,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:56,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:56,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240466268] [2024-06-14 11:56:56,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:56,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:56,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:56,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:56,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:56,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:56,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 320 transitions, 3944 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:56,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:56,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:56,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:56,927 INFO L124 PetriNetUnfolderBase]: 619/1129 cut-off events. [2024-06-14 11:56:56,927 INFO L125 PetriNetUnfolderBase]: For 204161/204161 co-relation queries the response was YES. [2024-06-14 11:56:56,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11172 conditions, 1129 events. 619/1129 cut-off events. For 204161/204161 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5969 event pairs, 34 based on Foata normal form. 1/1128 useless extension candidates. Maximal degree in co-relation 11007. Up to 937 conditions per place. [2024-06-14 11:56:56,939 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 283 selfloop transitions, 56 changer transitions 0/342 dead transitions. [2024-06-14 11:56:56,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 342 transitions, 5316 flow [2024-06-14 11:56:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:56:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:56:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 11:56:56,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:56:56,940 INFO L175 Difference]: Start difference. First operand has 339 places, 320 transitions, 3944 flow. Second operand 11 states and 143 transitions. [2024-06-14 11:56:56,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 342 transitions, 5316 flow [2024-06-14 11:56:57,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 342 transitions, 5106 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-14 11:56:57,493 INFO L231 Difference]: Finished difference. Result has 344 places, 326 transitions, 4075 flow [2024-06-14 11:56:57,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4075, PETRI_PLACES=344, PETRI_TRANSITIONS=326} [2024-06-14 11:56:57,493 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 312 predicate places. [2024-06-14 11:56:57,493 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 326 transitions, 4075 flow [2024-06-14 11:56:57,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:57,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:57,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:57,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 11:56:57,494 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:57,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1910794011, now seen corresponding path program 1 times [2024-06-14 11:56:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:57,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112499248] [2024-06-14 11:56:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:57,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:58,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:58,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112499248] [2024-06-14 11:56:58,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112499248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:58,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:58,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:56:58,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986925591] [2024-06-14 11:56:58,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:58,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:56:58,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:58,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:56:58,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:56:58,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:56:58,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 326 transitions, 4075 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:58,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:58,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:56:58,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:59,388 INFO L124 PetriNetUnfolderBase]: 623/1137 cut-off events. [2024-06-14 11:56:59,388 INFO L125 PetriNetUnfolderBase]: For 212318/212318 co-relation queries the response was YES. [2024-06-14 11:56:59,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11206 conditions, 1137 events. 623/1137 cut-off events. For 212318/212318 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6055 event pairs, 37 based on Foata normal form. 2/1137 useless extension candidates. Maximal degree in co-relation 11039. Up to 1023 conditions per place. [2024-06-14 11:56:59,442 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 313 selfloop transitions, 25 changer transitions 0/341 dead transitions. [2024-06-14 11:56:59,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 341 transitions, 4817 flow [2024-06-14 11:56:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:56:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:56:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:56:59,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-14 11:56:59,444 INFO L175 Difference]: Start difference. First operand has 344 places, 326 transitions, 4075 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:56:59,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 341 transitions, 4817 flow [2024-06-14 11:56:59,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 341 transitions, 4668 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:59,969 INFO L231 Difference]: Finished difference. Result has 347 places, 327 transitions, 4014 flow [2024-06-14 11:56:59,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3926, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4014, PETRI_PLACES=347, PETRI_TRANSITIONS=327} [2024-06-14 11:56:59,969 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 315 predicate places. [2024-06-14 11:56:59,969 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 327 transitions, 4014 flow [2024-06-14 11:56:59,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:59,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:59,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:59,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 11:56:59,970 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:59,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1911040089, now seen corresponding path program 7 times [2024-06-14 11:56:59,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:59,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037471871] [2024-06-14 11:56:59,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:59,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:01,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:01,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037471871] [2024-06-14 11:57:01,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037471871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:01,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:01,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:01,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726611798] [2024-06-14 11:57:01,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:01,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:01,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:01,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:01,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:01,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 327 transitions, 4014 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:01,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:01,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:01,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:02,258 INFO L124 PetriNetUnfolderBase]: 621/1134 cut-off events. [2024-06-14 11:57:02,258 INFO L125 PetriNetUnfolderBase]: For 203556/203556 co-relation queries the response was YES. [2024-06-14 11:57:02,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10994 conditions, 1134 events. 621/1134 cut-off events. For 203556/203556 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6015 event pairs, 35 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 10826. Up to 902 conditions per place. [2024-06-14 11:57:02,272 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 269 selfloop transitions, 70 changer transitions 0/342 dead transitions. [2024-06-14 11:57:02,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 342 transitions, 4950 flow [2024-06-14 11:57:02,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 11:57:02,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-14 11:57:02,273 INFO L175 Difference]: Start difference. First operand has 347 places, 327 transitions, 4014 flow. Second operand 11 states and 141 transitions. [2024-06-14 11:57:02,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 342 transitions, 4950 flow [2024-06-14 11:57:02,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 342 transitions, 4834 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:02,806 INFO L231 Difference]: Finished difference. Result has 350 places, 327 transitions, 4043 flow [2024-06-14 11:57:02,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3898, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4043, PETRI_PLACES=350, PETRI_TRANSITIONS=327} [2024-06-14 11:57:02,807 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 318 predicate places. [2024-06-14 11:57:02,807 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 327 transitions, 4043 flow [2024-06-14 11:57:02,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:02,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:02,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 11:57:02,807 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:02,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1917289689, now seen corresponding path program 8 times [2024-06-14 11:57:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048878389] [2024-06-14 11:57:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:04,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048878389] [2024-06-14 11:57:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048878389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:04,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677581938] [2024-06-14 11:57:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:04,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:04,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:04,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 327 transitions, 4043 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:04,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:04,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:04,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:04,879 INFO L124 PetriNetUnfolderBase]: 619/1131 cut-off events. [2024-06-14 11:57:04,879 INFO L125 PetriNetUnfolderBase]: For 200369/200369 co-relation queries the response was YES. [2024-06-14 11:57:04,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10885 conditions, 1131 events. 619/1131 cut-off events. For 200369/200369 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6027 event pairs, 35 based on Foata normal form. 1/1130 useless extension candidates. Maximal degree in co-relation 10716. Up to 960 conditions per place. [2024-06-14 11:57:04,891 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 288 selfloop transitions, 50 changer transitions 0/341 dead transitions. [2024-06-14 11:57:04,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 341 transitions, 4753 flow [2024-06-14 11:57:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:57:04,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 11:57:04,892 INFO L175 Difference]: Start difference. First operand has 350 places, 327 transitions, 4043 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:57:04,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 341 transitions, 4753 flow [2024-06-14 11:57:05,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 341 transitions, 4613 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:05,400 INFO L231 Difference]: Finished difference. Result has 353 places, 327 transitions, 4008 flow [2024-06-14 11:57:05,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3903, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4008, PETRI_PLACES=353, PETRI_TRANSITIONS=327} [2024-06-14 11:57:05,401 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 321 predicate places. [2024-06-14 11:57:05,401 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 327 transitions, 4008 flow [2024-06-14 11:57:05,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:05,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:05,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:05,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 11:57:05,402 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:05,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:05,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1917289441, now seen corresponding path program 3 times [2024-06-14 11:57:05,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:05,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612195159] [2024-06-14 11:57:05,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:05,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:06,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:06,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612195159] [2024-06-14 11:57:06,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612195159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:06,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:06,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:06,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264882118] [2024-06-14 11:57:06,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:06,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:06,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:06,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:06,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:07,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:07,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 327 transitions, 4008 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:07,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:07,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:07,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:07,591 INFO L124 PetriNetUnfolderBase]: 615/1125 cut-off events. [2024-06-14 11:57:07,592 INFO L125 PetriNetUnfolderBase]: For 197103/197103 co-relation queries the response was YES. [2024-06-14 11:57:07,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10572 conditions, 1125 events. 615/1125 cut-off events. For 197103/197103 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5964 event pairs, 34 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 10402. Up to 936 conditions per place. [2024-06-14 11:57:07,605 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 292 selfloop transitions, 47 changer transitions 0/342 dead transitions. [2024-06-14 11:57:07,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 342 transitions, 4724 flow [2024-06-14 11:57:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:57:07,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-14 11:57:07,606 INFO L175 Difference]: Start difference. First operand has 353 places, 327 transitions, 4008 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:57:07,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 342 transitions, 4724 flow [2024-06-14 11:57:08,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 342 transitions, 4521 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-14 11:57:08,121 INFO L231 Difference]: Finished difference. Result has 353 places, 327 transitions, 3905 flow [2024-06-14 11:57:08,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3905, PETRI_PLACES=353, PETRI_TRANSITIONS=327} [2024-06-14 11:57:08,122 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 321 predicate places. [2024-06-14 11:57:08,122 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 327 transitions, 3905 flow [2024-06-14 11:57:08,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:08,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:08,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:08,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 11:57:08,122 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:08,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash 636552903, now seen corresponding path program 5 times [2024-06-14 11:57:08,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:08,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127045850] [2024-06-14 11:57:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:08,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:09,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127045850] [2024-06-14 11:57:09,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127045850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:09,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:09,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:57:09,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970548491] [2024-06-14 11:57:09,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:09,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:57:09,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:09,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:57:09,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:57:09,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:09,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 327 transitions, 3905 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:09,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:09,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:09,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:09,763 INFO L124 PetriNetUnfolderBase]: 619/1133 cut-off events. [2024-06-14 11:57:09,763 INFO L125 PetriNetUnfolderBase]: For 200828/200828 co-relation queries the response was YES. [2024-06-14 11:57:09,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10586 conditions, 1133 events. 619/1133 cut-off events. For 200828/200828 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6027 event pairs, 38 based on Foata normal form. 2/1133 useless extension candidates. Maximal degree in co-relation 10415. Up to 960 conditions per place. [2024-06-14 11:57:09,775 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 293 selfloop transitions, 46 changer transitions 0/342 dead transitions. [2024-06-14 11:57:09,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 342 transitions, 4709 flow [2024-06-14 11:57:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:57:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:57:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 11:57:09,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-14 11:57:09,776 INFO L175 Difference]: Start difference. First operand has 353 places, 327 transitions, 3905 flow. Second operand 10 states and 124 transitions. [2024-06-14 11:57:09,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 342 transitions, 4709 flow [2024-06-14 11:57:10,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 342 transitions, 4555 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 11:57:10,346 INFO L231 Difference]: Finished difference. Result has 353 places, 330 transitions, 3952 flow [2024-06-14 11:57:10,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3751, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3952, PETRI_PLACES=353, PETRI_TRANSITIONS=330} [2024-06-14 11:57:10,347 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 321 predicate places. [2024-06-14 11:57:10,347 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 330 transitions, 3952 flow [2024-06-14 11:57:10,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:10,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:10,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:10,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 11:57:10,347 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:10,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash -986780195, now seen corresponding path program 2 times [2024-06-14 11:57:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:10,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100236452] [2024-06-14 11:57:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:10,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:11,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:11,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100236452] [2024-06-14 11:57:11,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100236452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:11,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:11,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:11,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024789751] [2024-06-14 11:57:11,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:11,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:11,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:11,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:11,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 330 transitions, 3952 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:11,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:11,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:11,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:12,271 INFO L124 PetriNetUnfolderBase]: 626/1144 cut-off events. [2024-06-14 11:57:12,271 INFO L125 PetriNetUnfolderBase]: For 205021/205021 co-relation queries the response was YES. [2024-06-14 11:57:12,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10668 conditions, 1144 events. 626/1144 cut-off events. For 205021/205021 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6110 event pairs, 36 based on Foata normal form. 2/1144 useless extension candidates. Maximal degree in co-relation 10496. Up to 998 conditions per place. [2024-06-14 11:57:12,286 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 303 selfloop transitions, 40 changer transitions 0/346 dead transitions. [2024-06-14 11:57:12,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 346 transitions, 4717 flow [2024-06-14 11:57:12,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:57:12,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 11:57:12,287 INFO L175 Difference]: Start difference. First operand has 353 places, 330 transitions, 3952 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:57:12,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 346 transitions, 4717 flow [2024-06-14 11:57:12,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 346 transitions, 4513 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:12,827 INFO L231 Difference]: Finished difference. Result has 357 places, 333 transitions, 3890 flow [2024-06-14 11:57:12,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3890, PETRI_PLACES=357, PETRI_TRANSITIONS=333} [2024-06-14 11:57:12,827 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 325 predicate places. [2024-06-14 11:57:12,827 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 333 transitions, 3890 flow [2024-06-14 11:57:12,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:12,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:12,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:12,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 11:57:12,828 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:12,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:12,828 INFO L85 PathProgramCache]: Analyzing trace with hash 642986953, now seen corresponding path program 9 times [2024-06-14 11:57:12,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:12,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121566966] [2024-06-14 11:57:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:12,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:14,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:14,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121566966] [2024-06-14 11:57:14,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121566966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:14,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:14,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:14,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61541187] [2024-06-14 11:57:14,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:14,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:14,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:14,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:14,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:14,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:14,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 333 transitions, 3890 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:14,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:14,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:14,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:14,932 INFO L124 PetriNetUnfolderBase]: 639/1167 cut-off events. [2024-06-14 11:57:14,932 INFO L125 PetriNetUnfolderBase]: For 215461/215461 co-relation queries the response was YES. [2024-06-14 11:57:14,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11039 conditions, 1167 events. 639/1167 cut-off events. For 215461/215461 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6263 event pairs, 38 based on Foata normal form. 1/1166 useless extension candidates. Maximal degree in co-relation 10866. Up to 952 conditions per place. [2024-06-14 11:57:14,947 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 287 selfloop transitions, 63 changer transitions 0/353 dead transitions. [2024-06-14 11:57:14,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 353 transitions, 5284 flow [2024-06-14 11:57:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 11:57:14,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:57:14,948 INFO L175 Difference]: Start difference. First operand has 357 places, 333 transitions, 3890 flow. Second operand 11 states and 143 transitions. [2024-06-14 11:57:14,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 353 transitions, 5284 flow [2024-06-14 11:57:15,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 353 transitions, 5184 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 11:57:15,585 INFO L231 Difference]: Finished difference. Result has 361 places, 339 transitions, 4123 flow [2024-06-14 11:57:15,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3790, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4123, PETRI_PLACES=361, PETRI_TRANSITIONS=339} [2024-06-14 11:57:15,586 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 329 predicate places. [2024-06-14 11:57:15,586 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 339 transitions, 4123 flow [2024-06-14 11:57:15,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:15,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:15,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:15,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 11:57:15,586 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:15,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash 864631993, now seen corresponding path program 10 times [2024-06-14 11:57:15,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:15,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902398066] [2024-06-14 11:57:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:15,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:16,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:16,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902398066] [2024-06-14 11:57:16,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902398066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:16,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:16,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:16,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552030609] [2024-06-14 11:57:16,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:16,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:16,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:16,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:16,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:16,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:16,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 339 transitions, 4123 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:16,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:16,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:16,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:17,562 INFO L124 PetriNetUnfolderBase]: 647/1184 cut-off events. [2024-06-14 11:57:17,563 INFO L125 PetriNetUnfolderBase]: For 226998/226998 co-relation queries the response was YES. [2024-06-14 11:57:17,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11402 conditions, 1184 events. 647/1184 cut-off events. For 226998/226998 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6381 event pairs, 40 based on Foata normal form. 1/1183 useless extension candidates. Maximal degree in co-relation 11228. Up to 841 conditions per place. [2024-06-14 11:57:17,575 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 252 selfloop transitions, 102 changer transitions 0/357 dead transitions. [2024-06-14 11:57:17,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 357 transitions, 5471 flow [2024-06-14 11:57:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 11:57:17,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 11:57:17,576 INFO L175 Difference]: Start difference. First operand has 361 places, 339 transitions, 4123 flow. Second operand 11 states and 143 transitions. [2024-06-14 11:57:17,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 357 transitions, 5471 flow [2024-06-14 11:57:18,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 357 transitions, 5307 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-14 11:57:18,248 INFO L231 Difference]: Finished difference. Result has 366 places, 343 transitions, 4312 flow [2024-06-14 11:57:18,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3959, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4312, PETRI_PLACES=366, PETRI_TRANSITIONS=343} [2024-06-14 11:57:18,248 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 334 predicate places. [2024-06-14 11:57:18,248 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 343 transitions, 4312 flow [2024-06-14 11:57:18,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:18,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:18,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:18,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 11:57:18,249 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:18,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash -986481665, now seen corresponding path program 3 times [2024-06-14 11:57:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:18,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807610628] [2024-06-14 11:57:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:18,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:19,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:19,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807610628] [2024-06-14 11:57:19,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807610628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:19,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:19,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:57:19,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244692259] [2024-06-14 11:57:19,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:19,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:57:19,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:19,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:57:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:57:19,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:19,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 343 transitions, 4312 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:19,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:19,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:19,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:19,997 INFO L124 PetriNetUnfolderBase]: 658/1205 cut-off events. [2024-06-14 11:57:19,997 INFO L125 PetriNetUnfolderBase]: For 252260/252260 co-relation queries the response was YES. [2024-06-14 11:57:20,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11975 conditions, 1205 events. 658/1205 cut-off events. For 252260/252260 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6543 event pairs, 37 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 11799. Up to 1005 conditions per place. [2024-06-14 11:57:20,014 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 309 selfloop transitions, 47 changer transitions 0/359 dead transitions. [2024-06-14 11:57:20,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 359 transitions, 5364 flow [2024-06-14 11:57:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:57:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:57:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 11:57:20,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-14 11:57:20,016 INFO L175 Difference]: Start difference. First operand has 366 places, 343 transitions, 4312 flow. Second operand 10 states and 126 transitions. [2024-06-14 11:57:20,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 359 transitions, 5364 flow [2024-06-14 11:57:20,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 359 transitions, 5099 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:20,679 INFO L231 Difference]: Finished difference. Result has 368 places, 345 transitions, 4219 flow [2024-06-14 11:57:20,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4047, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4219, PETRI_PLACES=368, PETRI_TRANSITIONS=345} [2024-06-14 11:57:20,680 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 336 predicate places. [2024-06-14 11:57:20,680 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 345 transitions, 4219 flow [2024-06-14 11:57:20,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:20,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:20,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:20,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 11:57:20,680 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:20,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:20,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1222970993, now seen corresponding path program 11 times [2024-06-14 11:57:20,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:20,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535820513] [2024-06-14 11:57:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:20,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:22,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:22,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535820513] [2024-06-14 11:57:22,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535820513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:22,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:22,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:22,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956853004] [2024-06-14 11:57:22,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:22,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:22,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:22,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:22,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:22,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:22,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 345 transitions, 4219 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:22,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:22,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:22,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:22,832 INFO L124 PetriNetUnfolderBase]: 661/1212 cut-off events. [2024-06-14 11:57:22,833 INFO L125 PetriNetUnfolderBase]: For 248117/248117 co-relation queries the response was YES. [2024-06-14 11:57:22,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11908 conditions, 1212 events. 661/1212 cut-off events. For 248117/248117 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6590 event pairs, 41 based on Foata normal form. 1/1211 useless extension candidates. Maximal degree in co-relation 11731. Up to 1017 conditions per place. [2024-06-14 11:57:22,847 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 302 selfloop transitions, 55 changer transitions 0/360 dead transitions. [2024-06-14 11:57:22,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 360 transitions, 5255 flow [2024-06-14 11:57:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:57:22,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:57:22,848 INFO L175 Difference]: Start difference. First operand has 368 places, 345 transitions, 4219 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:57:22,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 360 transitions, 5255 flow [2024-06-14 11:57:23,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 360 transitions, 5155 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 11:57:23,620 INFO L231 Difference]: Finished difference. Result has 373 places, 347 transitions, 4288 flow [2024-06-14 11:57:23,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4119, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4288, PETRI_PLACES=373, PETRI_TRANSITIONS=347} [2024-06-14 11:57:23,621 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 341 predicate places. [2024-06-14 11:57:23,621 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 347 transitions, 4288 flow [2024-06-14 11:57:23,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:23,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:23,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:23,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 11:57:23,621 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:23,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:23,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1216708373, now seen corresponding path program 12 times [2024-06-14 11:57:23,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:23,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731541725] [2024-06-14 11:57:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:23,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:25,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:25,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731541725] [2024-06-14 11:57:25,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731541725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:25,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:25,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:25,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501386565] [2024-06-14 11:57:25,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:25,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:25,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:25,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:25,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:25,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 347 transitions, 4288 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:25,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:25,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:25,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:25,886 INFO L124 PetriNetUnfolderBase]: 664/1219 cut-off events. [2024-06-14 11:57:25,886 INFO L125 PetriNetUnfolderBase]: For 251755/251755 co-relation queries the response was YES. [2024-06-14 11:57:25,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11995 conditions, 1219 events. 664/1219 cut-off events. For 251755/251755 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6643 event pairs, 41 based on Foata normal form. 1/1218 useless extension candidates. Maximal degree in co-relation 11816. Up to 994 conditions per place. [2024-06-14 11:57:25,902 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 294 selfloop transitions, 66 changer transitions 0/363 dead transitions. [2024-06-14 11:57:25,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 363 transitions, 5568 flow [2024-06-14 11:57:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 11:57:25,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-14 11:57:25,903 INFO L175 Difference]: Start difference. First operand has 373 places, 347 transitions, 4288 flow. Second operand 11 states and 144 transitions. [2024-06-14 11:57:25,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 363 transitions, 5568 flow [2024-06-14 11:57:26,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 363 transitions, 5406 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:26,596 INFO L231 Difference]: Finished difference. Result has 376 places, 349 transitions, 4311 flow [2024-06-14 11:57:26,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4126, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4311, PETRI_PLACES=376, PETRI_TRANSITIONS=349} [2024-06-14 11:57:26,596 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 344 predicate places. [2024-06-14 11:57:26,596 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 349 transitions, 4311 flow [2024-06-14 11:57:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:26,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:26,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:26,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 11:57:26,597 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:26,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -986491895, now seen corresponding path program 4 times [2024-06-14 11:57:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749898847] [2024-06-14 11:57:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:27,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:27,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749898847] [2024-06-14 11:57:27,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749898847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:27,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:57:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180754585] [2024-06-14 11:57:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:27,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:57:27,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:27,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:57:27,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:57:28,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:28,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 349 transitions, 4311 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:28,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:28,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:28,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:28,506 INFO L124 PetriNetUnfolderBase]: 668/1227 cut-off events. [2024-06-14 11:57:28,506 INFO L125 PetriNetUnfolderBase]: For 263314/263314 co-relation queries the response was YES. [2024-06-14 11:57:28,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12074 conditions, 1227 events. 668/1227 cut-off events. For 263314/263314 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6704 event pairs, 39 based on Foata normal form. 2/1227 useless extension candidates. Maximal degree in co-relation 11894. Up to 1050 conditions per place. [2024-06-14 11:57:28,520 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 313 selfloop transitions, 46 changer transitions 0/362 dead transitions. [2024-06-14 11:57:28,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 362 transitions, 5087 flow [2024-06-14 11:57:28,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:57:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:57:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:57:28,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:57:28,521 INFO L175 Difference]: Start difference. First operand has 376 places, 349 transitions, 4311 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:57:28,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 362 transitions, 5087 flow [2024-06-14 11:57:29,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 362 transitions, 4926 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:29,277 INFO L231 Difference]: Finished difference. Result has 378 places, 350 transitions, 4280 flow [2024-06-14 11:57:29,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4150, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4280, PETRI_PLACES=378, PETRI_TRANSITIONS=350} [2024-06-14 11:57:29,277 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 346 predicate places. [2024-06-14 11:57:29,277 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 350 transitions, 4280 flow [2024-06-14 11:57:29,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:29,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:29,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:29,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 11:57:29,277 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:29,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:29,278 INFO L85 PathProgramCache]: Analyzing trace with hash 872912713, now seen corresponding path program 13 times [2024-06-14 11:57:29,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:29,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890993437] [2024-06-14 11:57:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:29,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:30,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:30,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890993437] [2024-06-14 11:57:30,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890993437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:30,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:30,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:30,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446129272] [2024-06-14 11:57:30,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:30,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:30,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:30,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:30,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:30,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:30,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 350 transitions, 4280 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:30,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:30,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:30,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:31,206 INFO L124 PetriNetUnfolderBase]: 671/1234 cut-off events. [2024-06-14 11:57:31,206 INFO L125 PetriNetUnfolderBase]: For 259939/259939 co-relation queries the response was YES. [2024-06-14 11:57:31,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12101 conditions, 1234 events. 671/1234 cut-off events. For 259939/259939 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6769 event pairs, 41 based on Foata normal form. 1/1233 useless extension candidates. Maximal degree in co-relation 11920. Up to 882 conditions per place. [2024-06-14 11:57:31,223 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 245 selfloop transitions, 117 changer transitions 0/365 dead transitions. [2024-06-14 11:57:31,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 365 transitions, 5326 flow [2024-06-14 11:57:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:31,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 11:57:31,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-14 11:57:31,224 INFO L175 Difference]: Start difference. First operand has 378 places, 350 transitions, 4280 flow. Second operand 11 states and 141 transitions. [2024-06-14 11:57:31,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 365 transitions, 5326 flow [2024-06-14 11:57:31,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 365 transitions, 5214 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:31,999 INFO L231 Difference]: Finished difference. Result has 381 places, 352 transitions, 4455 flow [2024-06-14 11:57:31,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4455, PETRI_PLACES=381, PETRI_TRANSITIONS=352} [2024-06-14 11:57:31,999 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 349 predicate places. [2024-06-14 11:57:32,000 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 352 transitions, 4455 flow [2024-06-14 11:57:32,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:32,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:32,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:32,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 11:57:32,000 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:32,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash 864638751, now seen corresponding path program 4 times [2024-06-14 11:57:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:32,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725234961] [2024-06-14 11:57:32,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:32,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:33,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725234961] [2024-06-14 11:57:33,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725234961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:33,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:33,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:33,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787398990] [2024-06-14 11:57:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:33,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:33,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:33,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:33,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:33,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:33,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 352 transitions, 4455 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:33,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:33,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:33,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:34,133 INFO L124 PetriNetUnfolderBase]: 674/1239 cut-off events. [2024-06-14 11:57:34,133 INFO L125 PetriNetUnfolderBase]: For 264298/264298 co-relation queries the response was YES. [2024-06-14 11:57:34,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12314 conditions, 1239 events. 674/1239 cut-off events. For 264298/264298 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6797 event pairs, 41 based on Foata normal form. 1/1238 useless extension candidates. Maximal degree in co-relation 12132. Up to 952 conditions per place. [2024-06-14 11:57:34,152 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 277 selfloop transitions, 86 changer transitions 0/366 dead transitions. [2024-06-14 11:57:34,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 366 transitions, 5263 flow [2024-06-14 11:57:34,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:34,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:57:34,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-14 11:57:34,153 INFO L175 Difference]: Start difference. First operand has 381 places, 352 transitions, 4455 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:57:34,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 366 transitions, 5263 flow [2024-06-14 11:57:35,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 366 transitions, 5033 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:57:35,089 INFO L231 Difference]: Finished difference. Result has 383 places, 354 transitions, 4460 flow [2024-06-14 11:57:35,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4225, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4460, PETRI_PLACES=383, PETRI_TRANSITIONS=354} [2024-06-14 11:57:35,090 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 351 predicate places. [2024-06-14 11:57:35,090 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 354 transitions, 4460 flow [2024-06-14 11:57:35,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:35,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:35,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:35,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 11:57:35,090 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:35,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:35,091 INFO L85 PathProgramCache]: Analyzing trace with hash 864638503, now seen corresponding path program 14 times [2024-06-14 11:57:35,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:35,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717272869] [2024-06-14 11:57:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:35,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:36,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:36,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717272869] [2024-06-14 11:57:36,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717272869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:36,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:36,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:36,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604631849] [2024-06-14 11:57:36,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:36,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:36,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:36,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:36,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:36,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:36,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 354 transitions, 4460 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:36,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:36,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:36,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:37,284 INFO L124 PetriNetUnfolderBase]: 700/1287 cut-off events. [2024-06-14 11:57:37,284 INFO L125 PetriNetUnfolderBase]: For 307519/307519 co-relation queries the response was YES. [2024-06-14 11:57:37,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13397 conditions, 1287 events. 700/1287 cut-off events. For 307519/307519 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7123 event pairs, 40 based on Foata normal form. 2/1287 useless extension candidates. Maximal degree in co-relation 13214. Up to 760 conditions per place. [2024-06-14 11:57:37,302 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 259 selfloop transitions, 120 changer transitions 0/382 dead transitions. [2024-06-14 11:57:37,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 382 transitions, 6426 flow [2024-06-14 11:57:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-14 11:57:37,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597796143250687 [2024-06-14 11:57:37,304 INFO L175 Difference]: Start difference. First operand has 383 places, 354 transitions, 4460 flow. Second operand 11 states and 151 transitions. [2024-06-14 11:57:37,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 382 transitions, 6426 flow [2024-06-14 11:57:38,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 382 transitions, 6213 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 11:57:38,299 INFO L231 Difference]: Finished difference. Result has 385 places, 365 transitions, 4894 flow [2024-06-14 11:57:38,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4894, PETRI_PLACES=385, PETRI_TRANSITIONS=365} [2024-06-14 11:57:38,299 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 353 predicate places. [2024-06-14 11:57:38,299 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 365 transitions, 4894 flow [2024-06-14 11:57:38,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:38,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:38,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:38,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 11:57:38,300 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:38,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:38,300 INFO L85 PathProgramCache]: Analyzing trace with hash 642993711, now seen corresponding path program 5 times [2024-06-14 11:57:38,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:38,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804537066] [2024-06-14 11:57:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:38,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:39,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:39,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804537066] [2024-06-14 11:57:39,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804537066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:39,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:39,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:57:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477743113] [2024-06-14 11:57:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:39,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:57:39,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:57:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:57:39,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:39,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 365 transitions, 4894 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:39,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:39,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:39,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:39,986 INFO L124 PetriNetUnfolderBase]: 703/1292 cut-off events. [2024-06-14 11:57:39,986 INFO L125 PetriNetUnfolderBase]: For 306916/306916 co-relation queries the response was YES. [2024-06-14 11:57:39,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13579 conditions, 1292 events. 703/1292 cut-off events. For 306916/306916 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7157 event pairs, 42 based on Foata normal form. 1/1291 useless extension candidates. Maximal degree in co-relation 13395. Up to 1064 conditions per place. [2024-06-14 11:57:40,004 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 315 selfloop transitions, 62 changer transitions 0/380 dead transitions. [2024-06-14 11:57:40,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 380 transitions, 6019 flow [2024-06-14 11:57:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:57:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:57:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 11:57:40,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 11:57:40,006 INFO L175 Difference]: Start difference. First operand has 385 places, 365 transitions, 4894 flow. Second operand 10 states and 134 transitions. [2024-06-14 11:57:40,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 380 transitions, 6019 flow [2024-06-14 11:57:41,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 380 transitions, 5788 flow, removed 83 selfloop flow, removed 5 redundant places. [2024-06-14 11:57:41,017 INFO L231 Difference]: Finished difference. Result has 390 places, 368 transitions, 4888 flow [2024-06-14 11:57:41,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4888, PETRI_PLACES=390, PETRI_TRANSITIONS=368} [2024-06-14 11:57:41,018 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 358 predicate places. [2024-06-14 11:57:41,018 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 368 transitions, 4888 flow [2024-06-14 11:57:41,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:41,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:41,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:41,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 11:57:41,019 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:41,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:41,020 INFO L85 PathProgramCache]: Analyzing trace with hash 864869391, now seen corresponding path program 6 times [2024-06-14 11:57:41,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:41,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652894633] [2024-06-14 11:57:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:41,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652894633] [2024-06-14 11:57:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652894633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:42,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028360517] [2024-06-14 11:57:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:42,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:42,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 368 transitions, 4888 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:42,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:42,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:42,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:43,165 INFO L124 PetriNetUnfolderBase]: 706/1297 cut-off events. [2024-06-14 11:57:43,165 INFO L125 PetriNetUnfolderBase]: For 310355/310355 co-relation queries the response was YES. [2024-06-14 11:57:43,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13583 conditions, 1297 events. 706/1297 cut-off events. For 310355/310355 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7213 event pairs, 42 based on Foata normal form. 1/1296 useless extension candidates. Maximal degree in co-relation 13397. Up to 1004 conditions per place. [2024-06-14 11:57:43,182 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 294 selfloop transitions, 85 changer transitions 0/382 dead transitions. [2024-06-14 11:57:43,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 382 transitions, 5732 flow [2024-06-14 11:57:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 11:57:43,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-14 11:57:43,183 INFO L175 Difference]: Start difference. First operand has 390 places, 368 transitions, 4888 flow. Second operand 11 states and 141 transitions. [2024-06-14 11:57:43,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 382 transitions, 5732 flow [2024-06-14 11:57:44,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 382 transitions, 5560 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:44,119 INFO L231 Difference]: Finished difference. Result has 393 places, 370 transitions, 4953 flow [2024-06-14 11:57:44,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4718, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4953, PETRI_PLACES=393, PETRI_TRANSITIONS=370} [2024-06-14 11:57:44,120 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 361 predicate places. [2024-06-14 11:57:44,120 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 370 transitions, 4953 flow [2024-06-14 11:57:44,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:44,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:44,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:44,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 11:57:44,120 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:44,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:44,121 INFO L85 PathProgramCache]: Analyzing trace with hash 864877761, now seen corresponding path program 7 times [2024-06-14 11:57:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:44,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357088902] [2024-06-14 11:57:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:44,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:45,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:45,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357088902] [2024-06-14 11:57:45,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357088902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:45,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:45,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:45,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282991194] [2024-06-14 11:57:45,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:45,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:45,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:45,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:45,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:45,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:45,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 370 transitions, 4953 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:45,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:45,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:45,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:46,268 INFO L124 PetriNetUnfolderBase]: 704/1294 cut-off events. [2024-06-14 11:57:46,268 INFO L125 PetriNetUnfolderBase]: For 301993/301993 co-relation queries the response was YES. [2024-06-14 11:57:46,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13428 conditions, 1294 events. 704/1294 cut-off events. For 301993/301993 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7193 event pairs, 42 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 13242. Up to 992 conditions per place. [2024-06-14 11:57:46,286 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 289 selfloop transitions, 90 changer transitions 0/382 dead transitions. [2024-06-14 11:57:46,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 382 transitions, 5739 flow [2024-06-14 11:57:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 11:57:46,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 11:57:46,287 INFO L175 Difference]: Start difference. First operand has 393 places, 370 transitions, 4953 flow. Second operand 11 states and 142 transitions. [2024-06-14 11:57:46,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 382 transitions, 5739 flow [2024-06-14 11:57:47,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 382 transitions, 5528 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 11:57:47,231 INFO L231 Difference]: Finished difference. Result has 395 places, 370 transitions, 4927 flow [2024-06-14 11:57:47,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4742, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4927, PETRI_PLACES=395, PETRI_TRANSITIONS=370} [2024-06-14 11:57:47,232 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 363 predicate places. [2024-06-14 11:57:47,232 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 370 transitions, 4927 flow [2024-06-14 11:57:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:47,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:47,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:47,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 11:57:47,232 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:47,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash 864878071, now seen corresponding path program 5 times [2024-06-14 11:57:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:47,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086076247] [2024-06-14 11:57:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:47,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:48,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:48,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086076247] [2024-06-14 11:57:48,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086076247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:48,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:48,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:48,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630170725] [2024-06-14 11:57:48,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:48,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:48,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:48,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:48,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:48,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:48,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 370 transitions, 4927 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:48,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:48,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:48,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:49,346 INFO L124 PetriNetUnfolderBase]: 708/1302 cut-off events. [2024-06-14 11:57:49,346 INFO L125 PetriNetUnfolderBase]: For 314939/314939 co-relation queries the response was YES. [2024-06-14 11:57:49,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13513 conditions, 1302 events. 708/1302 cut-off events. For 314939/314939 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7245 event pairs, 40 based on Foata normal form. 2/1302 useless extension candidates. Maximal degree in co-relation 13326. Up to 1138 conditions per place. [2024-06-14 11:57:49,362 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 343 selfloop transitions, 38 changer transitions 0/384 dead transitions. [2024-06-14 11:57:49,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 384 transitions, 5751 flow [2024-06-14 11:57:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:57:49,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-06-14 11:57:49,363 INFO L175 Difference]: Start difference. First operand has 395 places, 370 transitions, 4927 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:57:49,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 384 transitions, 5751 flow [2024-06-14 11:57:50,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 384 transitions, 5485 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-14 11:57:50,302 INFO L231 Difference]: Finished difference. Result has 396 places, 371 transitions, 4775 flow [2024-06-14 11:57:50,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4775, PETRI_PLACES=396, PETRI_TRANSITIONS=371} [2024-06-14 11:57:50,303 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 364 predicate places. [2024-06-14 11:57:50,303 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 371 transitions, 4775 flow [2024-06-14 11:57:50,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:50,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:50,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:50,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 11:57:50,304 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:50,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash 864869143, now seen corresponding path program 15 times [2024-06-14 11:57:50,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:50,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417797955] [2024-06-14 11:57:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:50,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:51,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417797955] [2024-06-14 11:57:51,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417797955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:51,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:51,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:51,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703680155] [2024-06-14 11:57:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:51,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:51,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:51,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:51,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:51,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 371 transitions, 4775 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:51,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:51,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:51,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:52,220 INFO L124 PetriNetUnfolderBase]: 706/1299 cut-off events. [2024-06-14 11:57:52,220 INFO L125 PetriNetUnfolderBase]: For 302818/302818 co-relation queries the response was YES. [2024-06-14 11:57:52,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13159 conditions, 1299 events. 706/1299 cut-off events. For 302818/302818 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7233 event pairs, 42 based on Foata normal form. 1/1298 useless extension candidates. Maximal degree in co-relation 12972. Up to 941 conditions per place. [2024-06-14 11:57:52,247 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 274 selfloop transitions, 107 changer transitions 0/384 dead transitions. [2024-06-14 11:57:52,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 384 transitions, 5823 flow [2024-06-14 11:57:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 11:57:52,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-14 11:57:52,249 INFO L175 Difference]: Start difference. First operand has 396 places, 371 transitions, 4775 flow. Second operand 11 states and 144 transitions. [2024-06-14 11:57:52,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 384 transitions, 5823 flow [2024-06-14 11:57:53,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 384 transitions, 5681 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-14 11:57:53,330 INFO L231 Difference]: Finished difference. Result has 398 places, 371 transitions, 4852 flow [2024-06-14 11:57:53,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4633, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4852, PETRI_PLACES=398, PETRI_TRANSITIONS=371} [2024-06-14 11:57:53,330 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 366 predicate places. [2024-06-14 11:57:53,330 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 371 transitions, 4852 flow [2024-06-14 11:57:53,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:53,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:53,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:53,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 11:57:53,331 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:53,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:53,331 INFO L85 PathProgramCache]: Analyzing trace with hash 643224351, now seen corresponding path program 8 times [2024-06-14 11:57:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:53,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138561155] [2024-06-14 11:57:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:54,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:54,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138561155] [2024-06-14 11:57:54,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138561155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:54,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:54,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:54,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806547907] [2024-06-14 11:57:54,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:54,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:54,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:54,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:54,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 371 transitions, 4852 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:54,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:54,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:54,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:55,111 INFO L124 PetriNetUnfolderBase]: 709/1304 cut-off events. [2024-06-14 11:57:55,111 INFO L125 PetriNetUnfolderBase]: For 307225/307225 co-relation queries the response was YES. [2024-06-14 11:57:55,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13309 conditions, 1304 events. 709/1304 cut-off events. For 307225/307225 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7268 event pairs, 42 based on Foata normal form. 1/1303 useless extension candidates. Maximal degree in co-relation 13121. Up to 1091 conditions per place. [2024-06-14 11:57:55,130 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 322 selfloop transitions, 60 changer transitions 0/385 dead transitions. [2024-06-14 11:57:55,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 385 transitions, 5696 flow [2024-06-14 11:57:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:57:55,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-14 11:57:55,131 INFO L175 Difference]: Start difference. First operand has 398 places, 371 transitions, 4852 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:57:55,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 385 transitions, 5696 flow [2024-06-14 11:57:56,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 385 transitions, 5493 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 11:57:56,049 INFO L231 Difference]: Finished difference. Result has 401 places, 373 transitions, 4830 flow [2024-06-14 11:57:56,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4830, PETRI_PLACES=401, PETRI_TRANSITIONS=373} [2024-06-14 11:57:56,049 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 369 predicate places. [2024-06-14 11:57:56,049 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 373 transitions, 4830 flow [2024-06-14 11:57:56,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:56,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:56,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:56,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 11:57:56,050 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:56,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash 643233031, now seen corresponding path program 6 times [2024-06-14 11:57:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:56,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873947461] [2024-06-14 11:57:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:56,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:57,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:57,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873947461] [2024-06-14 11:57:57,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873947461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:57,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:57,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527494790] [2024-06-14 11:57:57,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:57,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:57,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:57,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:57:57,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 373 transitions, 4830 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:57,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:57,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:57:57,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:58,112 INFO L124 PetriNetUnfolderBase]: 706/1299 cut-off events. [2024-06-14 11:57:58,112 INFO L125 PetriNetUnfolderBase]: For 303072/303072 co-relation queries the response was YES. [2024-06-14 11:57:58,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12959 conditions, 1299 events. 706/1299 cut-off events. For 303072/303072 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7231 event pairs, 39 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 12770. Up to 1158 conditions per place. [2024-06-14 11:57:58,127 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 354 selfloop transitions, 29 changer transitions 0/386 dead transitions. [2024-06-14 11:57:58,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 386 transitions, 5626 flow [2024-06-14 11:57:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:57:58,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 11:57:58,128 INFO L175 Difference]: Start difference. First operand has 401 places, 373 transitions, 4830 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:57:58,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 386 transitions, 5626 flow [2024-06-14 11:57:59,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 386 transitions, 5449 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-14 11:57:59,071 INFO L231 Difference]: Finished difference. Result has 403 places, 373 transitions, 4715 flow [2024-06-14 11:57:59,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4715, PETRI_PLACES=403, PETRI_TRANSITIONS=373} [2024-06-14 11:57:59,072 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 371 predicate places. [2024-06-14 11:57:59,072 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 373 transitions, 4715 flow [2024-06-14 11:57:59,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:57:59,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:59,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:59,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 11:57:59,072 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:57:59,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:59,073 INFO L85 PathProgramCache]: Analyzing trace with hash 643224103, now seen corresponding path program 16 times [2024-06-14 11:57:59,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:59,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075602180] [2024-06-14 11:57:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:59,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075602180] [2024-06-14 11:58:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075602180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:00,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:00,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004978831] [2024-06-14 11:58:00,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:00,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:00,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:00,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:00,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:00,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:00,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 373 transitions, 4715 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:00,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:00,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:00,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:01,245 INFO L124 PetriNetUnfolderBase]: 704/1296 cut-off events. [2024-06-14 11:58:01,245 INFO L125 PetriNetUnfolderBase]: For 289596/289596 co-relation queries the response was YES. [2024-06-14 11:58:01,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12693 conditions, 1296 events. 704/1296 cut-off events. For 289596/289596 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7216 event pairs, 41 based on Foata normal form. 1/1295 useless extension candidates. Maximal degree in co-relation 12503. Up to 1064 conditions per place. [2024-06-14 11:58:01,262 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 315 selfloop transitions, 68 changer transitions 0/386 dead transitions. [2024-06-14 11:58:01,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 386 transitions, 5773 flow [2024-06-14 11:58:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:01,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 11:58:01,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-14 11:58:01,263 INFO L175 Difference]: Start difference. First operand has 403 places, 373 transitions, 4715 flow. Second operand 11 states and 141 transitions. [2024-06-14 11:58:01,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 386 transitions, 5773 flow [2024-06-14 11:58:02,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 386 transitions, 5648 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-14 11:58:02,156 INFO L231 Difference]: Finished difference. Result has 404 places, 373 transitions, 4731 flow [2024-06-14 11:58:02,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4590, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4731, PETRI_PLACES=404, PETRI_TRANSITIONS=373} [2024-06-14 11:58:02,156 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-14 11:58:02,156 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 373 transitions, 4731 flow [2024-06-14 11:58:02,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:02,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:02,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:02,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 11:58:02,157 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:02,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1311470797, now seen corresponding path program 9 times [2024-06-14 11:58:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324898409] [2024-06-14 11:58:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:02,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:03,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:03,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324898409] [2024-06-14 11:58:03,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324898409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:03,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:03,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:03,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45253771] [2024-06-14 11:58:03,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:03,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:03,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:03,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:03,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:03,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 373 transitions, 4731 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:03,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:03,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:03,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:04,393 INFO L124 PetriNetUnfolderBase]: 702/1293 cut-off events. [2024-06-14 11:58:04,393 INFO L125 PetriNetUnfolderBase]: For 284954/284954 co-relation queries the response was YES. [2024-06-14 11:58:04,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12579 conditions, 1293 events. 702/1293 cut-off events. For 284954/284954 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7208 event pairs, 41 based on Foata normal form. 1/1292 useless extension candidates. Maximal degree in co-relation 12388. Up to 1065 conditions per place. [2024-06-14 11:58:04,410 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 314 selfloop transitions, 69 changer transitions 0/386 dead transitions. [2024-06-14 11:58:04,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 386 transitions, 5527 flow [2024-06-14 11:58:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:58:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:58:04,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 11:58:04,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 11:58:04,410 INFO L175 Difference]: Start difference. First operand has 404 places, 373 transitions, 4731 flow. Second operand 12 states and 152 transitions. [2024-06-14 11:58:04,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 386 transitions, 5527 flow [2024-06-14 11:58:05,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 386 transitions, 5359 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 11:58:05,317 INFO L231 Difference]: Finished difference. Result has 406 places, 373 transitions, 4709 flow [2024-06-14 11:58:05,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4563, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4709, PETRI_PLACES=406, PETRI_TRANSITIONS=373} [2024-06-14 11:58:05,317 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-14 11:58:05,317 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 373 transitions, 4709 flow [2024-06-14 11:58:05,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:05,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:05,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:05,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 11:58:05,318 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:05,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:05,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1222964483, now seen corresponding path program 17 times [2024-06-14 11:58:05,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:05,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507435541] [2024-06-14 11:58:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:05,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:06,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:06,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507435541] [2024-06-14 11:58:06,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507435541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:06,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:06,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:06,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186688449] [2024-06-14 11:58:06,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:06,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:06,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:06,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:06,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:07,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:07,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 373 transitions, 4709 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:07,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:07,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:07,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:07,708 INFO L124 PetriNetUnfolderBase]: 700/1290 cut-off events. [2024-06-14 11:58:07,709 INFO L125 PetriNetUnfolderBase]: For 279351/279351 co-relation queries the response was YES. [2024-06-14 11:58:07,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12428 conditions, 1290 events. 700/1290 cut-off events. For 279351/279351 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7195 event pairs, 41 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 12236. Up to 1086 conditions per place. [2024-06-14 11:58:07,725 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 327 selfloop transitions, 55 changer transitions 0/385 dead transitions. [2024-06-14 11:58:07,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 385 transitions, 5501 flow [2024-06-14 11:58:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:07,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:58:07,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 11:58:07,726 INFO L175 Difference]: Start difference. First operand has 406 places, 373 transitions, 4709 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:58:07,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 385 transitions, 5501 flow [2024-06-14 11:58:08,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 385 transitions, 5258 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-06-14 11:58:08,779 INFO L231 Difference]: Finished difference. Result has 405 places, 373 transitions, 4581 flow [2024-06-14 11:58:08,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4466, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4581, PETRI_PLACES=405, PETRI_TRANSITIONS=373} [2024-06-14 11:58:08,780 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 373 predicate places. [2024-06-14 11:58:08,780 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 373 transitions, 4581 flow [2024-06-14 11:58:08,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:08,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:08,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:08,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 11:58:08,780 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:08,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2077964601, now seen corresponding path program 6 times [2024-06-14 11:58:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793559849] [2024-06-14 11:58:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:08,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:09,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:09,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793559849] [2024-06-14 11:58:09,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793559849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:09,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:09,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:58:09,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751678164] [2024-06-14 11:58:09,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:09,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:58:09,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:09,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:58:09,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:58:09,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:09,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 373 transitions, 4581 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:09,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:09,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:09,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:10,331 INFO L124 PetriNetUnfolderBase]: 697/1285 cut-off events. [2024-06-14 11:58:10,331 INFO L125 PetriNetUnfolderBase]: For 270045/270045 co-relation queries the response was YES. [2024-06-14 11:58:10,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12010 conditions, 1285 events. 697/1285 cut-off events. For 270045/270045 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7180 event pairs, 49 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 11818. Up to 1081 conditions per place. [2024-06-14 11:58:10,348 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 332 selfloop transitions, 50 changer transitions 0/385 dead transitions. [2024-06-14 11:58:10,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 385 transitions, 5434 flow [2024-06-14 11:58:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:58:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:58:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:58:10,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-14 11:58:10,349 INFO L175 Difference]: Start difference. First operand has 405 places, 373 transitions, 4581 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:58:10,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 385 transitions, 5434 flow [2024-06-14 11:58:11,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 385 transitions, 5310 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 11:58:11,417 INFO L231 Difference]: Finished difference. Result has 406 places, 375 transitions, 4633 flow [2024-06-14 11:58:11,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4457, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4633, PETRI_PLACES=406, PETRI_TRANSITIONS=375} [2024-06-14 11:58:11,417 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-14 11:58:11,417 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 375 transitions, 4633 flow [2024-06-14 11:58:11,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:11,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:11,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:11,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 11:58:11,418 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:11,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:11,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1408021157, now seen corresponding path program 18 times [2024-06-14 11:58:11,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:11,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900196214] [2024-06-14 11:58:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:11,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:12,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:12,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900196214] [2024-06-14 11:58:12,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900196214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:12,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:12,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:12,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939557127] [2024-06-14 11:58:12,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:12,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:12,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:12,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:12,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:12,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 375 transitions, 4633 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:12,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:12,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:12,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:13,595 INFO L124 PetriNetUnfolderBase]: 744/1378 cut-off events. [2024-06-14 11:58:13,596 INFO L125 PetriNetUnfolderBase]: For 347552/347552 co-relation queries the response was YES. [2024-06-14 11:58:13,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14279 conditions, 1378 events. 744/1378 cut-off events. For 347552/347552 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7841 event pairs, 54 based on Foata normal form. 2/1375 useless extension candidates. Maximal degree in co-relation 14085. Up to 978 conditions per place. [2024-06-14 11:58:13,616 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 322 selfloop transitions, 81 changer transitions 0/406 dead transitions. [2024-06-14 11:58:13,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 406 transitions, 7083 flow [2024-06-14 11:58:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-14 11:58:13,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297520661157025 [2024-06-14 11:58:13,617 INFO L175 Difference]: Start difference. First operand has 406 places, 375 transitions, 4633 flow. Second operand 11 states and 156 transitions. [2024-06-14 11:58:13,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 406 transitions, 7083 flow [2024-06-14 11:58:14,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 406 transitions, 6859 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-14 11:58:14,943 INFO L231 Difference]: Finished difference. Result has 410 places, 388 transitions, 5066 flow [2024-06-14 11:58:14,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4409, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5066, PETRI_PLACES=410, PETRI_TRANSITIONS=388} [2024-06-14 11:58:14,943 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 378 predicate places. [2024-06-14 11:58:14,943 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 388 transitions, 5066 flow [2024-06-14 11:58:14,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:14,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:14,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:14,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 11:58:14,944 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:14,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1326883805, now seen corresponding path program 10 times [2024-06-14 11:58:14,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:14,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839862205] [2024-06-14 11:58:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:14,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:16,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:16,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839862205] [2024-06-14 11:58:16,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839862205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:16,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:16,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:16,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543170510] [2024-06-14 11:58:16,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:16,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:16,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:16,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:16,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 388 transitions, 5066 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:16,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:16,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:16,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:17,216 INFO L124 PetriNetUnfolderBase]: 747/1383 cut-off events. [2024-06-14 11:58:17,216 INFO L125 PetriNetUnfolderBase]: For 344441/344441 co-relation queries the response was YES. [2024-06-14 11:58:17,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14395 conditions, 1383 events. 747/1383 cut-off events. For 344441/344441 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7853 event pairs, 49 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 14199. Up to 810 conditions per place. [2024-06-14 11:58:17,235 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 240 selfloop transitions, 159 changer transitions 0/402 dead transitions. [2024-06-14 11:58:17,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 402 transitions, 6492 flow [2024-06-14 11:58:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 11:58:17,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-14 11:58:17,236 INFO L175 Difference]: Start difference. First operand has 410 places, 388 transitions, 5066 flow. Second operand 11 states and 148 transitions. [2024-06-14 11:58:17,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 402 transitions, 6492 flow [2024-06-14 11:58:18,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 402 transitions, 6241 flow, removed 84 selfloop flow, removed 5 redundant places. [2024-06-14 11:58:18,667 INFO L231 Difference]: Finished difference. Result has 416 places, 390 transitions, 5200 flow [2024-06-14 11:58:18,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5200, PETRI_PLACES=416, PETRI_TRANSITIONS=390} [2024-06-14 11:58:18,667 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 384 predicate places. [2024-06-14 11:58:18,667 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 390 transitions, 5200 flow [2024-06-14 11:58:18,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:18,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:18,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:18,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 11:58:18,668 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:18,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:18,668 INFO L85 PathProgramCache]: Analyzing trace with hash -651836229, now seen corresponding path program 19 times [2024-06-14 11:58:18,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:18,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017937778] [2024-06-14 11:58:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:18,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:20,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:20,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017937778] [2024-06-14 11:58:20,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017937778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:20,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:20,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:20,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158702216] [2024-06-14 11:58:20,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:20,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:20,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:20,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:20,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:20,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:20,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 390 transitions, 5200 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:20,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:20,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:20,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:20,937 INFO L124 PetriNetUnfolderBase]: 760/1406 cut-off events. [2024-06-14 11:58:20,937 INFO L125 PetriNetUnfolderBase]: For 367966/367966 co-relation queries the response was YES. [2024-06-14 11:58:20,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14913 conditions, 1406 events. 760/1406 cut-off events. For 367966/367966 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8024 event pairs, 49 based on Foata normal form. 1/1402 useless extension candidates. Maximal degree in co-relation 14716. Up to 1139 conditions per place. [2024-06-14 11:58:20,962 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 340 selfloop transitions, 68 changer transitions 0/411 dead transitions. [2024-06-14 11:58:20,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 411 transitions, 7124 flow [2024-06-14 11:58:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 11:58:20,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-14 11:58:20,963 INFO L175 Difference]: Start difference. First operand has 416 places, 390 transitions, 5200 flow. Second operand 11 states and 144 transitions. [2024-06-14 11:58:20,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 411 transitions, 7124 flow [2024-06-14 11:58:22,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 411 transitions, 6749 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:22,415 INFO L231 Difference]: Finished difference. Result has 418 places, 398 transitions, 5234 flow [2024-06-14 11:58:22,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5234, PETRI_PLACES=418, PETRI_TRANSITIONS=398} [2024-06-14 11:58:22,415 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 386 predicate places. [2024-06-14 11:58:22,415 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 398 transitions, 5234 flow [2024-06-14 11:58:22,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:22,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:22,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:22,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 11:58:22,416 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:22,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1041783625, now seen corresponding path program 7 times [2024-06-14 11:58:22,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:22,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573354664] [2024-06-14 11:58:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:22,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:24,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:24,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573354664] [2024-06-14 11:58:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573354664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:24,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:24,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741440102] [2024-06-14 11:58:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:24,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:24,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:24,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:24,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 398 transitions, 5234 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:24,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:24,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:24,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:24,794 INFO L124 PetriNetUnfolderBase]: 767/1419 cut-off events. [2024-06-14 11:58:24,794 INFO L125 PetriNetUnfolderBase]: For 382658/382658 co-relation queries the response was YES. [2024-06-14 11:58:24,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14841 conditions, 1419 events. 767/1419 cut-off events. For 382658/382658 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8116 event pairs, 47 based on Foata normal form. 2/1419 useless extension candidates. Maximal degree in co-relation 14643. Up to 1295 conditions per place. [2024-06-14 11:58:24,814 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 391 selfloop transitions, 18 changer transitions 0/412 dead transitions. [2024-06-14 11:58:24,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 412 transitions, 6129 flow [2024-06-14 11:58:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:58:24,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 11:58:24,815 INFO L175 Difference]: Start difference. First operand has 418 places, 398 transitions, 5234 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:58:24,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 412 transitions, 6129 flow [2024-06-14 11:58:26,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 412 transitions, 5977 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-14 11:58:26,411 INFO L231 Difference]: Finished difference. Result has 425 places, 401 transitions, 5184 flow [2024-06-14 11:58:26,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5082, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5184, PETRI_PLACES=425, PETRI_TRANSITIONS=401} [2024-06-14 11:58:26,411 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 393 predicate places. [2024-06-14 11:58:26,411 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 401 transitions, 5184 flow [2024-06-14 11:58:26,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:26,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:26,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:26,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 11:58:26,412 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:26,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:26,413 INFO L85 PathProgramCache]: Analyzing trace with hash -651835981, now seen corresponding path program 11 times [2024-06-14 11:58:26,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:26,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620031209] [2024-06-14 11:58:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:26,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:27,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:27,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620031209] [2024-06-14 11:58:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620031209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:27,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:27,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:27,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697529174] [2024-06-14 11:58:27,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:27,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:27,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:28,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:28,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 401 transitions, 5184 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:28,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:28,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:28,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:28,569 INFO L124 PetriNetUnfolderBase]: 770/1424 cut-off events. [2024-06-14 11:58:28,570 INFO L125 PetriNetUnfolderBase]: For 378626/378626 co-relation queries the response was YES. [2024-06-14 11:58:28,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14869 conditions, 1424 events. 770/1424 cut-off events. For 378626/378626 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8168 event pairs, 49 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 14668. Up to 1177 conditions per place. [2024-06-14 11:58:28,591 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 347 selfloop transitions, 63 changer transitions 0/413 dead transitions. [2024-06-14 11:58:28,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 413 transitions, 6084 flow [2024-06-14 11:58:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:58:28,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:58:28,592 INFO L175 Difference]: Start difference. First operand has 425 places, 401 transitions, 5184 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:58:28,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 413 transitions, 6084 flow [2024-06-14 11:58:30,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 413 transitions, 6009 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 11:58:30,226 INFO L231 Difference]: Finished difference. Result has 428 places, 403 transitions, 5302 flow [2024-06-14 11:58:30,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5109, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5302, PETRI_PLACES=428, PETRI_TRANSITIONS=403} [2024-06-14 11:58:30,227 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 396 predicate places. [2024-06-14 11:58:30,227 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 403 transitions, 5302 flow [2024-06-14 11:58:30,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:30,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:30,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:30,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 11:58:30,227 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:30,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2071530551, now seen corresponding path program 20 times [2024-06-14 11:58:30,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:30,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98856984] [2024-06-14 11:58:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:30,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:31,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98856984] [2024-06-14 11:58:31,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98856984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:31,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:31,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:31,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335434140] [2024-06-14 11:58:31,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:31,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:31,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:31,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:31,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:31,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:31,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 403 transitions, 5302 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:31,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:31,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:31,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:32,554 INFO L124 PetriNetUnfolderBase]: 768/1423 cut-off events. [2024-06-14 11:58:32,555 INFO L125 PetriNetUnfolderBase]: For 372272/372272 co-relation queries the response was YES. [2024-06-14 11:58:32,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14764 conditions, 1423 events. 768/1423 cut-off events. For 372272/372272 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8164 event pairs, 50 based on Foata normal form. 1/1419 useless extension candidates. Maximal degree in co-relation 14562. Up to 1155 conditions per place. [2024-06-14 11:58:32,575 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 343 selfloop transitions, 69 changer transitions 0/415 dead transitions. [2024-06-14 11:58:32,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 415 transitions, 6708 flow [2024-06-14 11:58:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 11:58:32,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 11:58:32,577 INFO L175 Difference]: Start difference. First operand has 428 places, 403 transitions, 5302 flow. Second operand 11 states and 142 transitions. [2024-06-14 11:58:32,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 415 transitions, 6708 flow [2024-06-14 11:58:34,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 415 transitions, 6499 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:34,239 INFO L231 Difference]: Finished difference. Result has 430 places, 403 transitions, 5236 flow [2024-06-14 11:58:34,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5093, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5236, PETRI_PLACES=430, PETRI_TRANSITIONS=403} [2024-06-14 11:58:34,239 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 398 predicate places. [2024-06-14 11:58:34,239 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 403 transitions, 5236 flow [2024-06-14 11:58:34,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:34,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:34,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:34,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 11:58:34,240 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:34,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1548395989, now seen corresponding path program 8 times [2024-06-14 11:58:34,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:34,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928200829] [2024-06-14 11:58:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:36,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:36,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928200829] [2024-06-14 11:58:36,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928200829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:36,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:36,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:36,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70771486] [2024-06-14 11:58:36,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:36,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:36,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:36,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:36,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:36,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:36,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 403 transitions, 5236 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:36,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:36,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:36,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:36,639 INFO L124 PetriNetUnfolderBase]: 772/1431 cut-off events. [2024-06-14 11:58:36,640 INFO L125 PetriNetUnfolderBase]: For 387418/387418 co-relation queries the response was YES. [2024-06-14 11:58:36,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14830 conditions, 1431 events. 772/1431 cut-off events. For 387418/387418 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8226 event pairs, 47 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 14627. Up to 1189 conditions per place. [2024-06-14 11:58:36,661 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 350 selfloop transitions, 62 changer transitions 0/415 dead transitions. [2024-06-14 11:58:36,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 415 transitions, 6124 flow [2024-06-14 11:58:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:58:36,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 11:58:36,662 INFO L175 Difference]: Start difference. First operand has 430 places, 403 transitions, 5236 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:58:36,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 415 transitions, 6124 flow [2024-06-14 11:58:38,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 415 transitions, 5978 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:38,155 INFO L231 Difference]: Finished difference. Result has 432 places, 404 transitions, 5260 flow [2024-06-14 11:58:38,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5090, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5260, PETRI_PLACES=432, PETRI_TRANSITIONS=404} [2024-06-14 11:58:38,156 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 400 predicate places. [2024-06-14 11:58:38,156 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 404 transitions, 5260 flow [2024-06-14 11:58:38,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:38,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:38,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:38,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 11:58:38,156 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:38,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1548387309, now seen corresponding path program 12 times [2024-06-14 11:58:38,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:38,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456858609] [2024-06-14 11:58:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:38,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:39,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456858609] [2024-06-14 11:58:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456858609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:39,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:39,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68424856] [2024-06-14 11:58:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:39,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:39,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:39,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:39,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:39,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 404 transitions, 5260 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:39,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:39,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:39,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:40,258 INFO L124 PetriNetUnfolderBase]: 775/1434 cut-off events. [2024-06-14 11:58:40,258 INFO L125 PetriNetUnfolderBase]: For 382188/382188 co-relation queries the response was YES. [2024-06-14 11:58:40,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14911 conditions, 1434 events. 775/1434 cut-off events. For 382188/382188 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8242 event pairs, 51 based on Foata normal form. 1/1430 useless extension candidates. Maximal degree in co-relation 14707. Up to 1011 conditions per place. [2024-06-14 11:58:40,280 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 286 selfloop transitions, 127 changer transitions 0/416 dead transitions. [2024-06-14 11:58:40,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 416 transitions, 6168 flow [2024-06-14 11:58:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 11:58:40,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 11:58:40,281 INFO L175 Difference]: Start difference. First operand has 432 places, 404 transitions, 5260 flow. Second operand 11 states and 142 transitions. [2024-06-14 11:58:40,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 416 transitions, 6168 flow [2024-06-14 11:58:41,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 416 transitions, 6008 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:41,753 INFO L231 Difference]: Finished difference. Result has 434 places, 406 transitions, 5423 flow [2024-06-14 11:58:41,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5100, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5423, PETRI_PLACES=434, PETRI_TRANSITIONS=406} [2024-06-14 11:58:41,754 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 402 predicate places. [2024-06-14 11:58:41,754 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 406 transitions, 5423 flow [2024-06-14 11:58:41,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:41,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:41,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:41,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 11:58:41,754 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:41,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2077786661, now seen corresponding path program 21 times [2024-06-14 11:58:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:41,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384759416] [2024-06-14 11:58:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:41,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:43,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:43,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:43,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384759416] [2024-06-14 11:58:43,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384759416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:43,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:43,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:43,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454876993] [2024-06-14 11:58:43,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:43,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:43,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:43,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:43,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:43,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:43,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 406 transitions, 5423 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:43,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:43,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:43,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:44,081 INFO L124 PetriNetUnfolderBase]: 778/1437 cut-off events. [2024-06-14 11:58:44,081 INFO L125 PetriNetUnfolderBase]: For 387400/387400 co-relation queries the response was YES. [2024-06-14 11:58:44,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15090 conditions, 1437 events. 778/1437 cut-off events. For 387400/387400 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8238 event pairs, 53 based on Foata normal form. 1/1433 useless extension candidates. Maximal degree in co-relation 14885. Up to 1200 conditions per place. [2024-06-14 11:58:44,103 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 357 selfloop transitions, 59 changer transitions 0/419 dead transitions. [2024-06-14 11:58:44,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 419 transitions, 6625 flow [2024-06-14 11:58:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:58:44,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 11:58:44,105 INFO L175 Difference]: Start difference. First operand has 434 places, 406 transitions, 5423 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:58:44,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 419 transitions, 6625 flow [2024-06-14 11:58:45,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 419 transitions, 6324 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:45,520 INFO L231 Difference]: Finished difference. Result has 436 places, 408 transitions, 5307 flow [2024-06-14 11:58:45,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5122, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5307, PETRI_PLACES=436, PETRI_TRANSITIONS=408} [2024-06-14 11:58:45,521 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 404 predicate places. [2024-06-14 11:58:45,521 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 408 transitions, 5307 flow [2024-06-14 11:58:45,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:45,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:45,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:45,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 11:58:45,521 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:45,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:45,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1603795127, now seen corresponding path program 22 times [2024-06-14 11:58:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:45,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720345667] [2024-06-14 11:58:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:45,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:46,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:46,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720345667] [2024-06-14 11:58:46,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720345667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:46,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:46,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:46,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410427421] [2024-06-14 11:58:46,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:46,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:46,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:46,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:46,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:46,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:46,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 408 transitions, 5307 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:46,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:46,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:46,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:47,508 INFO L124 PetriNetUnfolderBase]: 781/1450 cut-off events. [2024-06-14 11:58:47,508 INFO L125 PetriNetUnfolderBase]: For 395456/395456 co-relation queries the response was YES. [2024-06-14 11:58:47,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15030 conditions, 1450 events. 781/1450 cut-off events. For 395456/395456 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8374 event pairs, 49 based on Foata normal form. 1/1449 useless extension candidates. Maximal degree in co-relation 14824. Up to 1323 conditions per place. [2024-06-14 11:58:47,530 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 399 selfloop transitions, 19 changer transitions 0/421 dead transitions. [2024-06-14 11:58:47,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 421 transitions, 6245 flow [2024-06-14 11:58:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:58:47,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 11:58:47,531 INFO L175 Difference]: Start difference. First operand has 436 places, 408 transitions, 5307 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:58:47,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 421 transitions, 6245 flow [2024-06-14 11:58:49,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 421 transitions, 6054 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:49,047 INFO L231 Difference]: Finished difference. Result has 439 places, 411 transitions, 5248 flow [2024-06-14 11:58:49,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5116, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5248, PETRI_PLACES=439, PETRI_TRANSITIONS=411} [2024-06-14 11:58:49,047 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 407 predicate places. [2024-06-14 11:58:49,047 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 411 transitions, 5248 flow [2024-06-14 11:58:49,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:49,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:49,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:49,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 11:58:49,047 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:49,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:49,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1548387061, now seen corresponding path program 23 times [2024-06-14 11:58:49,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:49,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004742124] [2024-06-14 11:58:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:49,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:50,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004742124] [2024-06-14 11:58:50,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004742124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:50,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:50,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163184555] [2024-06-14 11:58:50,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:50,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:50,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:50,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:50,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:50,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 411 transitions, 5248 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:50,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:50,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:50,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:50,924 INFO L124 PetriNetUnfolderBase]: 789/1468 cut-off events. [2024-06-14 11:58:50,924 INFO L125 PetriNetUnfolderBase]: For 410470/410470 co-relation queries the response was YES. [2024-06-14 11:58:50,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15306 conditions, 1468 events. 789/1468 cut-off events. For 410470/410470 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8561 event pairs, 52 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 15098. Up to 913 conditions per place. [2024-06-14 11:58:50,946 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 268 selfloop transitions, 163 changer transitions 0/434 dead transitions. [2024-06-14 11:58:50,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 434 transitions, 7345 flow [2024-06-14 11:58:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 11:58:50,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-14 11:58:50,947 INFO L175 Difference]: Start difference. First operand has 439 places, 411 transitions, 5248 flow. Second operand 11 states and 147 transitions. [2024-06-14 11:58:50,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 434 transitions, 7345 flow [2024-06-14 11:58:52,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 434 transitions, 7243 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-14 11:58:52,671 INFO L231 Difference]: Finished difference. Result has 443 places, 421 transitions, 5943 flow [2024-06-14 11:58:52,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5146, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5943, PETRI_PLACES=443, PETRI_TRANSITIONS=421} [2024-06-14 11:58:52,672 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 411 predicate places. [2024-06-14 11:58:52,672 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 421 transitions, 5943 flow [2024-06-14 11:58:52,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:52,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:52,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:52,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 11:58:52,672 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:52,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:52,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1548156669, now seen corresponding path program 13 times [2024-06-14 11:58:52,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:52,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640618208] [2024-06-14 11:58:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:52,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:54,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:54,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640618208] [2024-06-14 11:58:54,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640618208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:54,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:54,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:54,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704975087] [2024-06-14 11:58:54,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:54,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:54,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:54,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:54,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:54,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 421 transitions, 5943 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:54,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:54,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:54,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:55,063 INFO L124 PetriNetUnfolderBase]: 787/1457 cut-off events. [2024-06-14 11:58:55,063 INFO L125 PetriNetUnfolderBase]: For 407370/407370 co-relation queries the response was YES. [2024-06-14 11:58:55,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15633 conditions, 1457 events. 787/1457 cut-off events. For 407370/407370 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8448 event pairs, 49 based on Foata normal form. 1/1453 useless extension candidates. Maximal degree in co-relation 15423. Up to 875 conditions per place. [2024-06-14 11:58:55,085 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 261 selfloop transitions, 167 changer transitions 0/431 dead transitions. [2024-06-14 11:58:55,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 431 transitions, 7111 flow [2024-06-14 11:58:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:58:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:58:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 11:58:55,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-14 11:58:55,086 INFO L175 Difference]: Start difference. First operand has 443 places, 421 transitions, 5943 flow. Second operand 10 states and 137 transitions. [2024-06-14 11:58:55,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 431 transitions, 7111 flow [2024-06-14 11:58:56,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 431 transitions, 6869 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-06-14 11:58:56,701 INFO L231 Difference]: Finished difference. Result has 448 places, 421 transitions, 6041 flow [2024-06-14 11:58:56,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5701, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6041, PETRI_PLACES=448, PETRI_TRANSITIONS=421} [2024-06-14 11:58:56,701 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 416 predicate places. [2024-06-14 11:58:56,701 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 421 transitions, 6041 flow [2024-06-14 11:58:56,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:56,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:56,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:56,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 11:58:56,702 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:58:56,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:56,702 INFO L85 PathProgramCache]: Analyzing trace with hash -429960301, now seen corresponding path program 14 times [2024-06-14 11:58:56,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:56,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196698794] [2024-06-14 11:58:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:56,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:57,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:57,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196698794] [2024-06-14 11:58:57,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196698794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:57,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:57,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:58:57,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947451122] [2024-06-14 11:58:57,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:57,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:58:57,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:57,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:58:57,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:58:57,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:58:57,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 421 transitions, 6041 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:58:57,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:57,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:58:57,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:58,326 INFO L124 PetriNetUnfolderBase]: 784/1456 cut-off events. [2024-06-14 11:58:58,326 INFO L125 PetriNetUnfolderBase]: For 398618/398618 co-relation queries the response was YES. [2024-06-14 11:58:58,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15608 conditions, 1456 events. 784/1456 cut-off events. For 398618/398618 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8455 event pairs, 49 based on Foata normal form. 1/1452 useless extension candidates. Maximal degree in co-relation 15396. Up to 1135 conditions per place. [2024-06-14 11:58:58,349 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 348 selfloop transitions, 81 changer transitions 0/432 dead transitions. [2024-06-14 11:58:58,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 432 transitions, 7507 flow [2024-06-14 11:58:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:58:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:58:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 11:58:58,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-14 11:58:58,350 INFO L175 Difference]: Start difference. First operand has 448 places, 421 transitions, 6041 flow. Second operand 10 states and 139 transitions. [2024-06-14 11:58:58,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 432 transitions, 7507 flow [2024-06-14 11:59:00,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 432 transitions, 7171 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:00,210 INFO L231 Difference]: Finished difference. Result has 450 places, 421 transitions, 5874 flow [2024-06-14 11:59:00,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5705, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5874, PETRI_PLACES=450, PETRI_TRANSITIONS=421} [2024-06-14 11:59:00,210 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 418 predicate places. [2024-06-14 11:59:00,210 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 421 transitions, 5874 flow [2024-06-14 11:59:00,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:00,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:00,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:00,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 11:59:00,211 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:00,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:00,211 INFO L85 PathProgramCache]: Analyzing trace with hash -429951621, now seen corresponding path program 9 times [2024-06-14 11:59:00,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:00,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394114722] [2024-06-14 11:59:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:00,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:01,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:01,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394114722] [2024-06-14 11:59:01,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394114722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:01,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:01,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390582933] [2024-06-14 11:59:01,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:01,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:01,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:01,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 421 transitions, 5874 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:01,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:01,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:01,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:02,272 INFO L124 PetriNetUnfolderBase]: 788/1460 cut-off events. [2024-06-14 11:59:02,272 INFO L125 PetriNetUnfolderBase]: For 416758/416758 co-relation queries the response was YES. [2024-06-14 11:59:02,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15561 conditions, 1460 events. 788/1460 cut-off events. For 416758/416758 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8497 event pairs, 47 based on Foata normal form. 2/1458 useless extension candidates. Maximal degree in co-relation 15348. Up to 1262 conditions per place. [2024-06-14 11:59:02,293 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 389 selfloop transitions, 40 changer transitions 0/432 dead transitions. [2024-06-14 11:59:02,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 432 transitions, 6796 flow [2024-06-14 11:59:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:59:02,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:59:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:59:02,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 11:59:02,294 INFO L175 Difference]: Start difference. First operand has 450 places, 421 transitions, 5874 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:59:02,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 432 transitions, 6796 flow [2024-06-14 11:59:04,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 432 transitions, 6598 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:59:04,007 INFO L231 Difference]: Finished difference. Result has 451 places, 422 transitions, 5804 flow [2024-06-14 11:59:04,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5676, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5804, PETRI_PLACES=451, PETRI_TRANSITIONS=422} [2024-06-14 11:59:04,007 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 419 predicate places. [2024-06-14 11:59:04,008 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 422 transitions, 5804 flow [2024-06-14 11:59:04,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:04,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:04,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:04,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 11:59:04,008 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:04,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash 833364663, now seen corresponding path program 10 times [2024-06-14 11:59:04,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:04,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342873323] [2024-06-14 11:59:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:04,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342873323] [2024-06-14 11:59:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342873323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:05,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:59:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138581846] [2024-06-14 11:59:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:05,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:59:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:59:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:59:05,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:05,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 422 transitions, 5804 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:05,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:05,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:05,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:05,822 INFO L124 PetriNetUnfolderBase]: 799/1481 cut-off events. [2024-06-14 11:59:05,822 INFO L125 PetriNetUnfolderBase]: For 439682/439682 co-relation queries the response was YES. [2024-06-14 11:59:05,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15984 conditions, 1481 events. 799/1481 cut-off events. For 439682/439682 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8639 event pairs, 49 based on Foata normal form. 2/1481 useless extension candidates. Maximal degree in co-relation 15772. Up to 1320 conditions per place. [2024-06-14 11:59:05,845 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 411 selfloop transitions, 22 changer transitions 0/436 dead transitions. [2024-06-14 11:59:05,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 436 transitions, 7078 flow [2024-06-14 11:59:05,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:59:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:59:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 11:59:05,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 11:59:05,846 INFO L175 Difference]: Start difference. First operand has 451 places, 422 transitions, 5804 flow. Second operand 10 states and 121 transitions. [2024-06-14 11:59:05,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 436 transitions, 7078 flow [2024-06-14 11:59:07,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 436 transitions, 6960 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:07,684 INFO L231 Difference]: Finished difference. Result has 453 places, 424 transitions, 5824 flow [2024-06-14 11:59:07,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5686, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5824, PETRI_PLACES=453, PETRI_TRANSITIONS=424} [2024-06-14 11:59:07,685 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 421 predicate places. [2024-06-14 11:59:07,685 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 424 transitions, 5824 flow [2024-06-14 11:59:07,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:07,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:07,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:07,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 11:59:07,685 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:07,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:07,686 INFO L85 PathProgramCache]: Analyzing trace with hash -658092339, now seen corresponding path program 24 times [2024-06-14 11:59:07,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:07,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893099151] [2024-06-14 11:59:07,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:07,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:08,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:08,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893099151] [2024-06-14 11:59:08,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893099151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:08,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:08,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:08,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738028417] [2024-06-14 11:59:08,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:08,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:08,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:09,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:09,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 424 transitions, 5824 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:09,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:09,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:09,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:09,711 INFO L124 PetriNetUnfolderBase]: 797/1476 cut-off events. [2024-06-14 11:59:09,711 INFO L125 PetriNetUnfolderBase]: For 422916/422916 co-relation queries the response was YES. [2024-06-14 11:59:09,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15741 conditions, 1476 events. 797/1476 cut-off events. For 422916/422916 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8618 event pairs, 53 based on Foata normal form. 1/1472 useless extension candidates. Maximal degree in co-relation 15528. Up to 1237 conditions per place. [2024-06-14 11:59:09,734 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 372 selfloop transitions, 59 changer transitions 0/434 dead transitions. [2024-06-14 11:59:09,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 434 transitions, 6708 flow [2024-06-14 11:59:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:59:09,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-14 11:59:09,735 INFO L175 Difference]: Start difference. First operand has 453 places, 424 transitions, 5824 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:59:09,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 434 transitions, 6708 flow [2024-06-14 11:59:11,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 434 transitions, 6592 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-14 11:59:11,369 INFO L231 Difference]: Finished difference. Result has 458 places, 424 transitions, 5831 flow [2024-06-14 11:59:11,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5708, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5831, PETRI_PLACES=458, PETRI_TRANSITIONS=424} [2024-06-14 11:59:11,370 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 426 predicate places. [2024-06-14 11:59:11,370 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 424 transitions, 5831 flow [2024-06-14 11:59:11,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:11,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:11,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:11,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 11:59:11,370 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:11,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash 35107333, now seen corresponding path program 25 times [2024-06-14 11:59:11,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:11,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798122560] [2024-06-14 11:59:11,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:11,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:12,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798122560] [2024-06-14 11:59:12,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798122560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:12,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:12,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:12,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066714213] [2024-06-14 11:59:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:12,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:12,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:12,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:12,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 424 transitions, 5831 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:12,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:12,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:12,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:13,511 INFO L124 PetriNetUnfolderBase]: 800/1485 cut-off events. [2024-06-14 11:59:13,511 INFO L125 PetriNetUnfolderBase]: For 425832/425832 co-relation queries the response was YES. [2024-06-14 11:59:13,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15824 conditions, 1485 events. 800/1485 cut-off events. For 425832/425832 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8709 event pairs, 53 based on Foata normal form. 1/1481 useless extension candidates. Maximal degree in co-relation 15609. Up to 1170 conditions per place. [2024-06-14 11:59:13,534 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 350 selfloop transitions, 87 changer transitions 0/440 dead transitions. [2024-06-14 11:59:13,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 440 transitions, 7728 flow [2024-06-14 11:59:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 11:59:13,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-14 11:59:13,535 INFO L175 Difference]: Start difference. First operand has 458 places, 424 transitions, 5831 flow. Second operand 11 states and 147 transitions. [2024-06-14 11:59:13,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 440 transitions, 7728 flow [2024-06-14 11:59:15,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 440 transitions, 7612 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:59:15,214 INFO L231 Difference]: Finished difference. Result has 460 places, 427 transitions, 5995 flow [2024-06-14 11:59:15,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5995, PETRI_PLACES=460, PETRI_TRANSITIONS=427} [2024-06-14 11:59:15,215 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 428 predicate places. [2024-06-14 11:59:15,215 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 427 transitions, 5995 flow [2024-06-14 11:59:15,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:15,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:15,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:15,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 11:59:15,215 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:15,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:15,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1849885511, now seen corresponding path program 26 times [2024-06-14 11:59:15,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:15,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563571408] [2024-06-14 11:59:15,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:15,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:16,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:16,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563571408] [2024-06-14 11:59:16,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563571408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:16,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:16,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:16,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192180747] [2024-06-14 11:59:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:16,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:16,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 427 transitions, 5995 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:16,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:16,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:16,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:17,383 INFO L124 PetriNetUnfolderBase]: 798/1480 cut-off events. [2024-06-14 11:59:17,383 INFO L125 PetriNetUnfolderBase]: For 422199/422199 co-relation queries the response was YES. [2024-06-14 11:59:17,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15734 conditions, 1480 events. 798/1480 cut-off events. For 422199/422199 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8648 event pairs, 52 based on Foata normal form. 1/1476 useless extension candidates. Maximal degree in co-relation 15518. Up to 1168 conditions per place. [2024-06-14 11:59:17,407 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 347 selfloop transitions, 89 changer transitions 0/439 dead transitions. [2024-06-14 11:59:17,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 439 transitions, 7493 flow [2024-06-14 11:59:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 11:59:17,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 11:59:17,409 INFO L175 Difference]: Start difference. First operand has 460 places, 427 transitions, 5995 flow. Second operand 11 states and 145 transitions. [2024-06-14 11:59:17,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 439 transitions, 7493 flow [2024-06-14 11:59:19,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 439 transitions, 7098 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:19,181 INFO L231 Difference]: Finished difference. Result has 463 places, 427 transitions, 5783 flow [2024-06-14 11:59:19,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5600, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5783, PETRI_PLACES=463, PETRI_TRANSITIONS=427} [2024-06-14 11:59:19,182 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 431 predicate places. [2024-06-14 11:59:19,182 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 427 transitions, 5783 flow [2024-06-14 11:59:19,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:19,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:19,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:19,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 11:59:19,183 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:19,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:19,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2071284473, now seen corresponding path program 11 times [2024-06-14 11:59:19,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:19,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274932687] [2024-06-14 11:59:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:19,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:20,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274932687] [2024-06-14 11:59:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274932687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:20,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:20,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:20,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051059830] [2024-06-14 11:59:20,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:20,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:20,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:20,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:20,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 427 transitions, 5783 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:20,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:20,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:20,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:21,143 INFO L124 PetriNetUnfolderBase]: 802/1488 cut-off events. [2024-06-14 11:59:21,143 INFO L125 PetriNetUnfolderBase]: For 439457/439457 co-relation queries the response was YES. [2024-06-14 11:59:21,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15721 conditions, 1488 events. 802/1488 cut-off events. For 439457/439457 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8736 event pairs, 47 based on Foata normal form. 2/1486 useless extension candidates. Maximal degree in co-relation 15504. Up to 1316 conditions per place. [2024-06-14 11:59:21,167 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 405 selfloop transitions, 30 changer transitions 0/438 dead transitions. [2024-06-14 11:59:21,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 438 transitions, 6721 flow [2024-06-14 11:59:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:59:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:59:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 11:59:21,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 11:59:21,168 INFO L175 Difference]: Start difference. First operand has 463 places, 427 transitions, 5783 flow. Second operand 10 states and 121 transitions. [2024-06-14 11:59:21,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 438 transitions, 6721 flow [2024-06-14 11:59:22,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 438 transitions, 6550 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 11:59:22,873 INFO L231 Difference]: Finished difference. Result has 466 places, 428 transitions, 5724 flow [2024-06-14 11:59:22,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5612, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5724, PETRI_PLACES=466, PETRI_TRANSITIONS=428} [2024-06-14 11:59:22,874 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 434 predicate places. [2024-06-14 11:59:22,874 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 428 transitions, 5724 flow [2024-06-14 11:59:22,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:22,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:22,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:22,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 11:59:22,875 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:22,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1841307563, now seen corresponding path program 12 times [2024-06-14 11:59:22,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:22,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739182748] [2024-06-14 11:59:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:22,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:24,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739182748] [2024-06-14 11:59:24,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739182748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:24,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:24,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:24,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427418475] [2024-06-14 11:59:24,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:24,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:24,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:24,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:24,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 428 transitions, 5724 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:24,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:24,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:24,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:25,220 INFO L124 PetriNetUnfolderBase]: 806/1496 cut-off events. [2024-06-14 11:59:25,220 INFO L125 PetriNetUnfolderBase]: For 445664/445664 co-relation queries the response was YES. [2024-06-14 11:59:25,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15744 conditions, 1496 events. 806/1496 cut-off events. For 445664/445664 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8784 event pairs, 49 based on Foata normal form. 2/1494 useless extension candidates. Maximal degree in co-relation 15526. Up to 1298 conditions per place. [2024-06-14 11:59:25,238 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 395 selfloop transitions, 41 changer transitions 0/439 dead transitions. [2024-06-14 11:59:25,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 439 transitions, 6666 flow [2024-06-14 11:59:25,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:59:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:59:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:59:25,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 11:59:25,239 INFO L175 Difference]: Start difference. First operand has 466 places, 428 transitions, 5724 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:59:25,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 439 transitions, 6666 flow [2024-06-14 11:59:26,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 439 transitions, 6564 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:26,996 INFO L231 Difference]: Finished difference. Result has 468 places, 429 transitions, 5758 flow [2024-06-14 11:59:26,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5622, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5758, PETRI_PLACES=468, PETRI_TRANSITIONS=429} [2024-06-14 11:59:26,996 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 436 predicate places. [2024-06-14 11:59:26,996 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 429 transitions, 5758 flow [2024-06-14 11:59:26,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:26,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:26,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:26,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 11:59:26,996 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:26,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2071284783, now seen corresponding path program 15 times [2024-06-14 11:59:26,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:26,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258596873] [2024-06-14 11:59:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:26,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:28,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:28,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258596873] [2024-06-14 11:59:28,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258596873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:28,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:28,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:28,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451418598] [2024-06-14 11:59:28,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:28,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:28,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:28,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:28,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 429 transitions, 5758 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:28,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:28,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:28,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:29,140 INFO L124 PetriNetUnfolderBase]: 804/1495 cut-off events. [2024-06-14 11:59:29,140 INFO L125 PetriNetUnfolderBase]: For 427184/427184 co-relation queries the response was YES. [2024-06-14 11:59:29,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15540 conditions, 1495 events. 804/1495 cut-off events. For 427184/427184 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8794 event pairs, 54 based on Foata normal form. 1/1491 useless extension candidates. Maximal degree in co-relation 15321. Up to 1229 conditions per place. [2024-06-14 11:59:29,163 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 366 selfloop transitions, 71 changer transitions 0/440 dead transitions. [2024-06-14 11:59:29,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 440 transitions, 6656 flow [2024-06-14 11:59:29,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:59:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:59:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 11:59:29,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 11:59:29,164 INFO L175 Difference]: Start difference. First operand has 468 places, 429 transitions, 5758 flow. Second operand 12 states and 151 transitions. [2024-06-14 11:59:29,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 440 transitions, 6656 flow [2024-06-14 11:59:30,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 440 transitions, 6496 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:30,945 INFO L231 Difference]: Finished difference. Result has 472 places, 429 transitions, 5746 flow [2024-06-14 11:59:30,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5598, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5746, PETRI_PLACES=472, PETRI_TRANSITIONS=429} [2024-06-14 11:59:30,946 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 440 predicate places. [2024-06-14 11:59:30,946 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 429 transitions, 5746 flow [2024-06-14 11:59:30,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:30,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:30,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:30,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 11:59:30,946 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:30,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2071293401, now seen corresponding path program 27 times [2024-06-14 11:59:30,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:30,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792572708] [2024-06-14 11:59:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:30,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:32,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:32,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792572708] [2024-06-14 11:59:32,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792572708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:32,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:32,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:32,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902431348] [2024-06-14 11:59:32,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:32,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:32,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:32,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:32,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:32,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:32,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 429 transitions, 5746 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:32,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:32,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:32,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:33,195 INFO L124 PetriNetUnfolderBase]: 802/1490 cut-off events. [2024-06-14 11:59:33,195 INFO L125 PetriNetUnfolderBase]: For 419444/419444 co-relation queries the response was YES. [2024-06-14 11:59:33,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15331 conditions, 1490 events. 802/1490 cut-off events. For 419444/419444 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8763 event pairs, 54 based on Foata normal form. 1/1486 useless extension candidates. Maximal degree in co-relation 15111. Up to 1222 conditions per place. [2024-06-14 11:59:33,218 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 364 selfloop transitions, 72 changer transitions 0/439 dead transitions. [2024-06-14 11:59:33,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 439 transitions, 6640 flow [2024-06-14 11:59:33,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:59:33,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 11:59:33,219 INFO L175 Difference]: Start difference. First operand has 472 places, 429 transitions, 5746 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:59:33,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 439 transitions, 6640 flow [2024-06-14 11:59:34,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 439 transitions, 6409 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-14 11:59:34,959 INFO L231 Difference]: Finished difference. Result has 472 places, 429 transitions, 5664 flow [2024-06-14 11:59:34,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5515, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5664, PETRI_PLACES=472, PETRI_TRANSITIONS=429} [2024-06-14 11:59:34,959 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 440 predicate places. [2024-06-14 11:59:34,960 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 429 transitions, 5664 flow [2024-06-14 11:59:34,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:34,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:34,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:34,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 11:59:34,960 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:34,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1548156421, now seen corresponding path program 28 times [2024-06-14 11:59:34,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:34,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609820465] [2024-06-14 11:59:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:34,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:36,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:36,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609820465] [2024-06-14 11:59:36,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609820465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:36,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:36,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:36,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24736950] [2024-06-14 11:59:36,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:36,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:36,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:36,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:36,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:36,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 429 transitions, 5664 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:36,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:36,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:36,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:36,921 INFO L124 PetriNetUnfolderBase]: 818/1518 cut-off events. [2024-06-14 11:59:36,921 INFO L125 PetriNetUnfolderBase]: For 461810/461810 co-relation queries the response was YES. [2024-06-14 11:59:36,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16010 conditions, 1518 events. 818/1518 cut-off events. For 461810/461810 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8936 event pairs, 54 based on Foata normal form. 2/1515 useless extension candidates. Maximal degree in co-relation 15790. Up to 673 conditions per place. [2024-06-14 11:59:36,941 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 257 selfloop transitions, 192 changer transitions 0/452 dead transitions. [2024-06-14 11:59:36,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 452 transitions, 7910 flow [2024-06-14 11:59:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-14 11:59:36,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-14 11:59:36,942 INFO L175 Difference]: Start difference. First operand has 472 places, 429 transitions, 5664 flow. Second operand 11 states and 152 transitions. [2024-06-14 11:59:36,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 452 transitions, 7910 flow [2024-06-14 11:59:38,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 452 transitions, 7750 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 11:59:38,887 INFO L231 Difference]: Finished difference. Result has 473 places, 439 transitions, 6423 flow [2024-06-14 11:59:38,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5504, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6423, PETRI_PLACES=473, PETRI_TRANSITIONS=439} [2024-06-14 11:59:38,888 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 441 predicate places. [2024-06-14 11:59:38,888 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 439 transitions, 6423 flow [2024-06-14 11:59:38,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:38,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:38,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:38,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 11:59:38,888 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:38,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1548149911, now seen corresponding path program 29 times [2024-06-14 11:59:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:38,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60054856] [2024-06-14 11:59:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:38,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:40,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60054856] [2024-06-14 11:59:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60054856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:40,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:40,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:40,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002849837] [2024-06-14 11:59:40,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:40,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:40,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:40,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:40,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:40,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 439 transitions, 6423 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:40,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:40,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:40,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:40,826 INFO L124 PetriNetUnfolderBase]: 821/1525 cut-off events. [2024-06-14 11:59:40,826 INFO L125 PetriNetUnfolderBase]: For 458546/458546 co-relation queries the response was YES. [2024-06-14 11:59:40,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16698 conditions, 1525 events. 821/1525 cut-off events. For 458546/458546 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8983 event pairs, 54 based on Foata normal form. 1/1521 useless extension candidates. Maximal degree in co-relation 16476. Up to 678 conditions per place. [2024-06-14 11:59:40,852 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 246 selfloop transitions, 205 changer transitions 0/454 dead transitions. [2024-06-14 11:59:40,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 454 transitions, 8379 flow [2024-06-14 11:59:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-14 11:59:40,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597796143250687 [2024-06-14 11:59:40,853 INFO L175 Difference]: Start difference. First operand has 473 places, 439 transitions, 6423 flow. Second operand 11 states and 151 transitions. [2024-06-14 11:59:40,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 454 transitions, 8379 flow [2024-06-14 11:59:42,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 454 transitions, 8046 flow, removed 125 selfloop flow, removed 5 redundant places. [2024-06-14 11:59:42,976 INFO L231 Difference]: Finished difference. Result has 479 places, 441 transitions, 6595 flow [2024-06-14 11:59:42,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6116, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6595, PETRI_PLACES=479, PETRI_TRANSITIONS=441} [2024-06-14 11:59:42,977 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 447 predicate places. [2024-06-14 11:59:42,977 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 441 transitions, 6595 flow [2024-06-14 11:59:42,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:42,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:42,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:42,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 11:59:42,977 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:42,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:42,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1841596173, now seen corresponding path program 16 times [2024-06-14 11:59:42,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:42,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823415968] [2024-06-14 11:59:42,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:42,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:44,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:44,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823415968] [2024-06-14 11:59:44,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823415968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:44,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:44,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:44,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110544287] [2024-06-14 11:59:44,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:44,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:44,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:44,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:44,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:44,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 441 transitions, 6595 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:44,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:44,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:44,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:45,239 INFO L124 PetriNetUnfolderBase]: 832/1543 cut-off events. [2024-06-14 11:59:45,239 INFO L125 PetriNetUnfolderBase]: For 476791/476791 co-relation queries the response was YES. [2024-06-14 11:59:45,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17222 conditions, 1543 events. 832/1543 cut-off events. For 476791/476791 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9104 event pairs, 53 based on Foata normal form. 1/1539 useless extension candidates. Maximal degree in co-relation 16998. Up to 1255 conditions per place. [2024-06-14 11:59:45,264 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 375 selfloop transitions, 80 changer transitions 0/458 dead transitions. [2024-06-14 11:59:45,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 458 transitions, 7986 flow [2024-06-14 11:59:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:45,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:45,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 11:59:45,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 11:59:45,265 INFO L175 Difference]: Start difference. First operand has 479 places, 441 transitions, 6595 flow. Second operand 11 states and 145 transitions. [2024-06-14 11:59:45,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 458 transitions, 7986 flow [2024-06-14 11:59:47,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 458 transitions, 7531 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:47,276 INFO L231 Difference]: Finished difference. Result has 483 places, 447 transitions, 6462 flow [2024-06-14 11:59:47,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6146, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6462, PETRI_PLACES=483, PETRI_TRANSITIONS=447} [2024-06-14 11:59:47,276 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 451 predicate places. [2024-06-14 11:59:47,276 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 447 transitions, 6462 flow [2024-06-14 11:59:47,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:47,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:47,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:47,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 11:59:47,277 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:47,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:47,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1880839431, now seen corresponding path program 13 times [2024-06-14 11:59:47,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:47,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788388382] [2024-06-14 11:59:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:48,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788388382] [2024-06-14 11:59:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788388382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:48,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:48,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492638690] [2024-06-14 11:59:48,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:48,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:48,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:48,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:48,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 447 transitions, 6462 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:48,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:48,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:48,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:49,592 INFO L124 PetriNetUnfolderBase]: 836/1551 cut-off events. [2024-06-14 11:59:49,592 INFO L125 PetriNetUnfolderBase]: For 494691/494691 co-relation queries the response was YES. [2024-06-14 11:59:49,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16957 conditions, 1551 events. 836/1551 cut-off events. For 494691/494691 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9176 event pairs, 50 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 16732. Up to 1364 conditions per place. [2024-06-14 11:59:49,618 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 434 selfloop transitions, 26 changer transitions 0/463 dead transitions. [2024-06-14 11:59:49,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 463 transitions, 7780 flow [2024-06-14 11:59:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:59:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:59:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:59:49,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 11:59:49,620 INFO L175 Difference]: Start difference. First operand has 483 places, 447 transitions, 6462 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:59:49,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 463 transitions, 7780 flow [2024-06-14 11:59:51,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 463 transitions, 7637 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 11:59:51,684 INFO L231 Difference]: Finished difference. Result has 488 places, 448 transitions, 6427 flow [2024-06-14 11:59:51,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6319, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6427, PETRI_PLACES=488, PETRI_TRANSITIONS=448} [2024-06-14 11:59:51,685 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 456 predicate places. [2024-06-14 11:59:51,685 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 448 transitions, 6427 flow [2024-06-14 11:59:51,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:51,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:51,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:51,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 11:59:51,685 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:51,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash -421620061, now seen corresponding path program 17 times [2024-06-14 11:59:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:51,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679621177] [2024-06-14 11:59:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:52,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:52,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679621177] [2024-06-14 11:59:52,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679621177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:52,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:53,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:53,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977243472] [2024-06-14 11:59:53,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:53,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:53,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:53,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:53,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 448 transitions, 6427 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:53,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:53,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:53,782 INFO L124 PetriNetUnfolderBase]: 834/1548 cut-off events. [2024-06-14 11:59:53,782 INFO L125 PetriNetUnfolderBase]: For 476749/476749 co-relation queries the response was YES. [2024-06-14 11:59:53,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16781 conditions, 1548 events. 834/1548 cut-off events. For 476749/476749 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9166 event pairs, 55 based on Foata normal form. 1/1544 useless extension candidates. Maximal degree in co-relation 16554. Up to 1223 conditions per place. [2024-06-14 11:59:53,802 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 359 selfloop transitions, 97 changer transitions 0/459 dead transitions. [2024-06-14 11:59:53,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 459 transitions, 7681 flow [2024-06-14 11:59:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 11:59:53,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-14 11:59:53,804 INFO L175 Difference]: Start difference. First operand has 488 places, 448 transitions, 6427 flow. Second operand 11 states and 146 transitions. [2024-06-14 11:59:53,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 459 transitions, 7681 flow [2024-06-14 11:59:55,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 459 transitions, 7588 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 11:59:55,956 INFO L231 Difference]: Finished difference. Result has 490 places, 448 transitions, 6533 flow [2024-06-14 11:59:55,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6334, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6533, PETRI_PLACES=490, PETRI_TRANSITIONS=448} [2024-06-14 11:59:55,957 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-14 11:59:55,957 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 448 transitions, 6533 flow [2024-06-14 11:59:55,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:55,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:55,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:55,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 11:59:55,958 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:59:55,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1841604791, now seen corresponding path program 30 times [2024-06-14 11:59:55,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:55,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892688697] [2024-06-14 11:59:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:55,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892688697] [2024-06-14 11:59:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892688697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:57,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:57,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827467646] [2024-06-14 11:59:57,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:57,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:57,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:57,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:57,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:57,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 11:59:57,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 448 transitions, 6533 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:59:57,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:57,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 11:59:57,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:58,173 INFO L124 PetriNetUnfolderBase]: 832/1545 cut-off events. [2024-06-14 11:59:58,173 INFO L125 PetriNetUnfolderBase]: For 468976/468976 co-relation queries the response was YES. [2024-06-14 11:59:58,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16676 conditions, 1545 events. 832/1545 cut-off events. For 468976/468976 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9164 event pairs, 55 based on Foata normal form. 1/1541 useless extension candidates. Maximal degree in co-relation 16448. Up to 1231 conditions per place. [2024-06-14 11:59:58,199 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 364 selfloop transitions, 91 changer transitions 0/458 dead transitions. [2024-06-14 11:59:58,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 458 transitions, 7465 flow [2024-06-14 11:59:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:58,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 11:59:58,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 11:59:58,200 INFO L175 Difference]: Start difference. First operand has 490 places, 448 transitions, 6533 flow. Second operand 11 states and 142 transitions. [2024-06-14 11:59:58,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 458 transitions, 7465 flow [2024-06-14 12:00:00,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 458 transitions, 7132 flow, removed 47 selfloop flow, removed 11 redundant places. [2024-06-14 12:00:00,278 INFO L231 Difference]: Finished difference. Result has 490 places, 448 transitions, 6387 flow [2024-06-14 12:00:00,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6200, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6387, PETRI_PLACES=490, PETRI_TRANSITIONS=448} [2024-06-14 12:00:00,279 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-14 12:00:00,279 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 448 transitions, 6387 flow [2024-06-14 12:00:00,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:00,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:00,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:00,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 12:00:00,280 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:00,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:00,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1841604543, now seen corresponding path program 18 times [2024-06-14 12:00:00,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271803268] [2024-06-14 12:00:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:00,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:01,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:01,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271803268] [2024-06-14 12:00:01,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271803268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:01,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:01,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:01,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243089241] [2024-06-14 12:00:01,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:01,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:01,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:01,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:01,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 448 transitions, 6387 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:01,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:01,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:01,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:02,477 INFO L124 PetriNetUnfolderBase]: 830/1544 cut-off events. [2024-06-14 12:00:02,477 INFO L125 PetriNetUnfolderBase]: For 461058/461058 co-relation queries the response was YES. [2024-06-14 12:00:02,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16301 conditions, 1544 events. 830/1544 cut-off events. For 461058/461058 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9187 event pairs, 55 based on Foata normal form. 1/1540 useless extension candidates. Maximal degree in co-relation 16075. Up to 1261 conditions per place. [2024-06-14 12:00:02,502 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 378 selfloop transitions, 77 changer transitions 0/458 dead transitions. [2024-06-14 12:00:02,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 458 transitions, 7319 flow [2024-06-14 12:00:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:00:02,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 12:00:02,504 INFO L175 Difference]: Start difference. First operand has 490 places, 448 transitions, 6387 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:00:02,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 458 transitions, 7319 flow [2024-06-14 12:00:04,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 458 transitions, 7082 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:04,512 INFO L231 Difference]: Finished difference. Result has 492 places, 448 transitions, 6309 flow [2024-06-14 12:00:04,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6309, PETRI_PLACES=492, PETRI_TRANSITIONS=448} [2024-06-14 12:00:04,513 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 460 predicate places. [2024-06-14 12:00:04,513 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 448 transitions, 6309 flow [2024-06-14 12:00:04,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:04,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:04,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:04,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 12:00:04,513 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:04,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:04,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1603497899, now seen corresponding path program 14 times [2024-06-14 12:00:04,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:04,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783640464] [2024-06-14 12:00:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:05,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783640464] [2024-06-14 12:00:05,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783640464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:05,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:05,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:00:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033018304] [2024-06-14 12:00:05,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:05,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:00:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:00:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:00:05,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:05,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 448 transitions, 6309 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:05,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:05,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:05,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:06,521 INFO L124 PetriNetUnfolderBase]: 827/1537 cut-off events. [2024-06-14 12:00:06,521 INFO L125 PetriNetUnfolderBase]: For 453233/453233 co-relation queries the response was YES. [2024-06-14 12:00:06,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15811 conditions, 1537 events. 827/1537 cut-off events. For 453233/453233 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9115 event pairs, 52 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 15585. Up to 1389 conditions per place. [2024-06-14 12:00:06,547 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 433 selfloop transitions, 22 changer transitions 0/458 dead transitions. [2024-06-14 12:00:06,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 458 transitions, 7241 flow [2024-06-14 12:00:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:00:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:00:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 12:00:06,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-14 12:00:06,548 INFO L175 Difference]: Start difference. First operand has 492 places, 448 transitions, 6309 flow. Second operand 10 states and 119 transitions. [2024-06-14 12:00:06,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 458 transitions, 7241 flow [2024-06-14 12:00:08,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 458 transitions, 7042 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 12:00:08,602 INFO L231 Difference]: Finished difference. Result has 492 places, 448 transitions, 6160 flow [2024-06-14 12:00:08,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6110, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6160, PETRI_PLACES=492, PETRI_TRANSITIONS=448} [2024-06-14 12:00:08,603 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 460 predicate places. [2024-06-14 12:00:08,603 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 448 transitions, 6160 flow [2024-06-14 12:00:08,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:08,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:08,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:08,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 12:00:08,604 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:08,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:08,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1841297333, now seen corresponding path program 15 times [2024-06-14 12:00:08,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:08,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247388343] [2024-06-14 12:00:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:08,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247388343] [2024-06-14 12:00:10,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247388343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:10,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:10,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:10,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566269070] [2024-06-14 12:00:10,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:10,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:10,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:10,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:10,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:10,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 448 transitions, 6160 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:10,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:10,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:10,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:10,996 INFO L124 PetriNetUnfolderBase]: 831/1548 cut-off events. [2024-06-14 12:00:10,996 INFO L125 PetriNetUnfolderBase]: For 459010/459010 co-relation queries the response was YES. [2024-06-14 12:00:11,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15788 conditions, 1548 events. 831/1548 cut-off events. For 459010/459010 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9198 event pairs, 49 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 15561. Up to 1314 conditions per place. [2024-06-14 12:00:11,027 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 409 selfloop transitions, 49 changer transitions 0/461 dead transitions. [2024-06-14 12:00:11,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 461 transitions, 7154 flow [2024-06-14 12:00:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:11,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:00:11,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:00:11,028 INFO L175 Difference]: Start difference. First operand has 492 places, 448 transitions, 6160 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:00:11,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 461 transitions, 7154 flow [2024-06-14 12:00:13,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 461 transitions, 7108 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:13,165 INFO L231 Difference]: Finished difference. Result has 494 places, 449 transitions, 6270 flow [2024-06-14 12:00:13,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6114, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6270, PETRI_PLACES=494, PETRI_TRANSITIONS=449} [2024-06-14 12:00:13,166 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 462 predicate places. [2024-06-14 12:00:13,166 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 449 transitions, 6270 flow [2024-06-14 12:00:13,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:13,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:13,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:13,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 12:00:13,167 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:13,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:13,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1556738089, now seen corresponding path program 16 times [2024-06-14 12:00:13,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:13,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871395875] [2024-06-14 12:00:13,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:13,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:14,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:14,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871395875] [2024-06-14 12:00:14,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871395875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:14,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:14,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:14,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393184499] [2024-06-14 12:00:14,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:14,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:14,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:14,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:14,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:14,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:14,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 449 transitions, 6270 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:14,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:14,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:14,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:15,432 INFO L124 PetriNetUnfolderBase]: 835/1555 cut-off events. [2024-06-14 12:00:15,433 INFO L125 PetriNetUnfolderBase]: For 466195/466195 co-relation queries the response was YES. [2024-06-14 12:00:15,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16010 conditions, 1555 events. 835/1555 cut-off events. For 466195/466195 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9268 event pairs, 49 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 15782. Up to 1275 conditions per place. [2024-06-14 12:00:15,462 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 394 selfloop transitions, 66 changer transitions 0/463 dead transitions. [2024-06-14 12:00:15,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 463 transitions, 7600 flow [2024-06-14 12:00:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:00:15,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 12:00:15,463 INFO L175 Difference]: Start difference. First operand has 494 places, 449 transitions, 6270 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:00:15,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 463 transitions, 7600 flow [2024-06-14 12:00:17,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 463 transitions, 7467 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:17,632 INFO L231 Difference]: Finished difference. Result has 497 places, 450 transitions, 6327 flow [2024-06-14 12:00:17,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6137, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6327, PETRI_PLACES=497, PETRI_TRANSITIONS=450} [2024-06-14 12:00:17,632 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-14 12:00:17,633 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 450 transitions, 6327 flow [2024-06-14 12:00:17,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:17,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:17,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:17,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 12:00:17,633 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:17,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:17,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1556727859, now seen corresponding path program 17 times [2024-06-14 12:00:17,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:17,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273657938] [2024-06-14 12:00:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:17,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:18,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:18,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273657938] [2024-06-14 12:00:18,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273657938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:18,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:18,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:18,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147766392] [2024-06-14 12:00:18,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:18,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:18,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:18,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:19,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:19,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 450 transitions, 6327 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:19,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:19,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:19,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:19,798 INFO L124 PetriNetUnfolderBase]: 832/1550 cut-off events. [2024-06-14 12:00:19,798 INFO L125 PetriNetUnfolderBase]: For 443578/443578 co-relation queries the response was YES. [2024-06-14 12:00:19,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15599 conditions, 1550 events. 832/1550 cut-off events. For 443578/443578 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9257 event pairs, 50 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 15370. Up to 1293 conditions per place. [2024-06-14 12:00:19,826 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 394 selfloop transitions, 65 changer transitions 0/462 dead transitions. [2024-06-14 12:00:19,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 462 transitions, 7271 flow [2024-06-14 12:00:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:00:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:00:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:00:19,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-14 12:00:19,827 INFO L175 Difference]: Start difference. First operand has 497 places, 450 transitions, 6327 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:00:19,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 462 transitions, 7271 flow [2024-06-14 12:00:21,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 462 transitions, 7013 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:21,820 INFO L231 Difference]: Finished difference. Result has 500 places, 450 transitions, 6203 flow [2024-06-14 12:00:21,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6069, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6203, PETRI_PLACES=500, PETRI_TRANSITIONS=450} [2024-06-14 12:00:21,820 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-14 12:00:21,820 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 450 transitions, 6203 flow [2024-06-14 12:00:21,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:21,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:21,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:21,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 12:00:21,821 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:21,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1556430631, now seen corresponding path program 31 times [2024-06-14 12:00:21,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:21,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076549201] [2024-06-14 12:00:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:21,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:23,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:23,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076549201] [2024-06-14 12:00:23,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076549201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:23,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:23,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:23,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871139977] [2024-06-14 12:00:23,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:23,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:23,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:23,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:23,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 450 transitions, 6203 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:23,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:23,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:23,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:23,855 INFO L124 PetriNetUnfolderBase]: 830/1547 cut-off events. [2024-06-14 12:00:23,855 INFO L125 PetriNetUnfolderBase]: For 418542/418542 co-relation queries the response was YES. [2024-06-14 12:00:23,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15142 conditions, 1547 events. 830/1547 cut-off events. For 418542/418542 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9213 event pairs, 55 based on Foata normal form. 1/1543 useless extension candidates. Maximal degree in co-relation 14914. Up to 998 conditions per place. [2024-06-14 12:00:23,882 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 290 selfloop transitions, 167 changer transitions 0/460 dead transitions. [2024-06-14 12:00:23,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 460 transitions, 7139 flow [2024-06-14 12:00:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:00:23,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 12:00:23,883 INFO L175 Difference]: Start difference. First operand has 500 places, 450 transitions, 6203 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:00:23,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 460 transitions, 7139 flow [2024-06-14 12:00:25,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 460 transitions, 6743 flow, removed 31 selfloop flow, removed 17 redundant places. [2024-06-14 12:00:25,780 INFO L231 Difference]: Finished difference. Result has 494 places, 450 transitions, 6146 flow [2024-06-14 12:00:25,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5807, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6146, PETRI_PLACES=494, PETRI_TRANSITIONS=450} [2024-06-14 12:00:25,780 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 462 predicate places. [2024-06-14 12:00:25,780 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 450 transitions, 6146 flow [2024-06-14 12:00:25,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:25,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:25,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:25,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 12:00:25,781 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:25,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1368137507, now seen corresponding path program 1 times [2024-06-14 12:00:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:25,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063975197] [2024-06-14 12:00:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:26,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:26,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063975197] [2024-06-14 12:00:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063975197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:26,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:26,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:26,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553759306] [2024-06-14 12:00:26,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:26,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:26,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:26,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:26,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 450 transitions, 6146 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:26,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:26,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:26,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:27,655 INFO L124 PetriNetUnfolderBase]: 834/1555 cut-off events. [2024-06-14 12:00:27,655 INFO L125 PetriNetUnfolderBase]: For 427258/427258 co-relation queries the response was YES. [2024-06-14 12:00:27,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15001 conditions, 1555 events. 834/1555 cut-off events. For 427258/427258 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9278 event pairs, 26 based on Foata normal form. 2/1555 useless extension candidates. Maximal degree in co-relation 14776. Up to 1346 conditions per place. [2024-06-14 12:00:27,681 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 439 selfloop transitions, 31 changer transitions 0/473 dead transitions. [2024-06-14 12:00:27,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 473 transitions, 7166 flow [2024-06-14 12:00:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:00:27,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 12:00:27,682 INFO L175 Difference]: Start difference. First operand has 494 places, 450 transitions, 6146 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:00:27,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 473 transitions, 7166 flow [2024-06-14 12:00:29,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 473 transitions, 6786 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:00:29,511 INFO L231 Difference]: Finished difference. Result has 493 places, 451 transitions, 5858 flow [2024-06-14 12:00:29,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5766, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5858, PETRI_PLACES=493, PETRI_TRANSITIONS=451} [2024-06-14 12:00:29,512 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-14 12:00:29,512 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 451 transitions, 5858 flow [2024-06-14 12:00:29,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:29,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:29,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:29,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 12:00:29,512 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:29,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash 568940029, now seen corresponding path program 2 times [2024-06-14 12:00:29,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:29,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523096272] [2024-06-14 12:00:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:29,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:30,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:30,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523096272] [2024-06-14 12:00:30,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523096272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:30,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:30,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219292110] [2024-06-14 12:00:30,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:30,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:30,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:30,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:30,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:30,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:30,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 451 transitions, 5858 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:30,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:30,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:30,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:31,553 INFO L124 PetriNetUnfolderBase]: 838/1563 cut-off events. [2024-06-14 12:00:31,553 INFO L125 PetriNetUnfolderBase]: For 431375/431375 co-relation queries the response was YES. [2024-06-14 12:00:31,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14809 conditions, 1563 events. 838/1563 cut-off events. For 431375/431375 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9339 event pairs, 40 based on Foata normal form. 2/1563 useless extension candidates. Maximal degree in co-relation 14584. Up to 1371 conditions per place. [2024-06-14 12:00:31,575 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 438 selfloop transitions, 32 changer transitions 0/473 dead transitions. [2024-06-14 12:00:31,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 473 transitions, 6878 flow [2024-06-14 12:00:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:31,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:00:31,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 12:00:31,576 INFO L175 Difference]: Start difference. First operand has 493 places, 451 transitions, 5858 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:00:31,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 473 transitions, 6878 flow [2024-06-14 12:00:33,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 473 transitions, 6796 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:33,590 INFO L231 Difference]: Finished difference. Result has 495 places, 452 transitions, 5872 flow [2024-06-14 12:00:33,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5776, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5872, PETRI_PLACES=495, PETRI_TRANSITIONS=452} [2024-06-14 12:00:33,591 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 463 predicate places. [2024-06-14 12:00:33,591 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 452 transitions, 5872 flow [2024-06-14 12:00:33,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:33,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:33,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:33,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 12:00:33,591 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:33,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash 569087899, now seen corresponding path program 3 times [2024-06-14 12:00:33,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:33,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212707320] [2024-06-14 12:00:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:34,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212707320] [2024-06-14 12:00:34,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212707320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:34,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:34,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:34,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121273387] [2024-06-14 12:00:34,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:34,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:34,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:34,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:34,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:34,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:34,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 452 transitions, 5872 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:34,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:34,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:34,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:35,538 INFO L124 PetriNetUnfolderBase]: 842/1571 cut-off events. [2024-06-14 12:00:35,538 INFO L125 PetriNetUnfolderBase]: For 439357/439357 co-relation queries the response was YES. [2024-06-14 12:00:35,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14877 conditions, 1571 events. 842/1571 cut-off events. For 439357/439357 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9423 event pairs, 42 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 14651. Up to 1384 conditions per place. [2024-06-14 12:00:35,567 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 437 selfloop transitions, 33 changer transitions 0/473 dead transitions. [2024-06-14 12:00:35,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 473 transitions, 6892 flow [2024-06-14 12:00:35,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:00:35,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 12:00:35,568 INFO L175 Difference]: Start difference. First operand has 495 places, 452 transitions, 5872 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:00:35,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 473 transitions, 6892 flow [2024-06-14 12:00:37,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 473 transitions, 6806 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:37,615 INFO L231 Difference]: Finished difference. Result has 497 places, 453 transitions, 5886 flow [2024-06-14 12:00:37,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5786, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5886, PETRI_PLACES=497, PETRI_TRANSITIONS=453} [2024-06-14 12:00:37,616 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-14 12:00:37,616 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 453 transitions, 5886 flow [2024-06-14 12:00:37,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:37,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:37,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 12:00:37,617 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:37,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash -151853127, now seen corresponding path program 4 times [2024-06-14 12:00:37,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:37,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450788933] [2024-06-14 12:00:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:38,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:38,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450788933] [2024-06-14 12:00:38,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450788933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:38,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:38,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:38,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002545034] [2024-06-14 12:00:38,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:38,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:38,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:38,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:38,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:39,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:39,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 453 transitions, 5886 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:39,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:39,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:39,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:39,809 INFO L124 PetriNetUnfolderBase]: 846/1579 cut-off events. [2024-06-14 12:00:39,809 INFO L125 PetriNetUnfolderBase]: For 444486/444486 co-relation queries the response was YES. [2024-06-14 12:00:39,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14945 conditions, 1579 events. 846/1579 cut-off events. For 444486/444486 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 9528 event pairs, 42 based on Foata normal form. 2/1579 useless extension candidates. Maximal degree in co-relation 14718. Up to 1383 conditions per place. [2024-06-14 12:00:39,839 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 427 selfloop transitions, 42 changer transitions 0/472 dead transitions. [2024-06-14 12:00:39,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 472 transitions, 6909 flow [2024-06-14 12:00:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:00:39,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:00:39,840 INFO L175 Difference]: Start difference. First operand has 497 places, 453 transitions, 5886 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:00:39,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 472 transitions, 6909 flow [2024-06-14 12:00:41,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 472 transitions, 6819 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:41,878 INFO L231 Difference]: Finished difference. Result has 500 places, 455 transitions, 5937 flow [2024-06-14 12:00:41,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5796, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5937, PETRI_PLACES=500, PETRI_TRANSITIONS=455} [2024-06-14 12:00:41,878 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-14 12:00:41,878 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 455 transitions, 5937 flow [2024-06-14 12:00:41,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:41,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:41,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:41,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 12:00:41,879 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:41,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash -152000997, now seen corresponding path program 5 times [2024-06-14 12:00:41,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:41,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847434474] [2024-06-14 12:00:41,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:41,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:43,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:43,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847434474] [2024-06-14 12:00:43,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847434474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:43,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:43,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:43,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187662966] [2024-06-14 12:00:43,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:43,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:43,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:43,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:43,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 455 transitions, 5937 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:43,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:43,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:43,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:44,159 INFO L124 PetriNetUnfolderBase]: 850/1587 cut-off events. [2024-06-14 12:00:44,159 INFO L125 PetriNetUnfolderBase]: For 449866/449866 co-relation queries the response was YES. [2024-06-14 12:00:44,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15039 conditions, 1587 events. 850/1587 cut-off events. For 449866/449866 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 9564 event pairs, 40 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 14810. Up to 1386 conditions per place. [2024-06-14 12:00:44,183 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 430 selfloop transitions, 41 changer transitions 0/474 dead transitions. [2024-06-14 12:00:44,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 474 transitions, 6955 flow [2024-06-14 12:00:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:00:44,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:00:44,184 INFO L175 Difference]: Start difference. First operand has 500 places, 455 transitions, 5937 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:00:44,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 474 transitions, 6955 flow [2024-06-14 12:00:46,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 474 transitions, 6851 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:00:46,180 INFO L231 Difference]: Finished difference. Result has 503 places, 456 transitions, 5953 flow [2024-06-14 12:00:46,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5953, PETRI_PLACES=503, PETRI_TRANSITIONS=456} [2024-06-14 12:00:46,181 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-14 12:00:46,181 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 456 transitions, 5953 flow [2024-06-14 12:00:46,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:46,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:46,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:46,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 12:00:46,181 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:46,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:46,182 INFO L85 PathProgramCache]: Analyzing trace with hash -146490747, now seen corresponding path program 6 times [2024-06-14 12:00:46,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953147163] [2024-06-14 12:00:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:46,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:47,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:47,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953147163] [2024-06-14 12:00:47,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953147163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:47,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:47,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:47,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943141202] [2024-06-14 12:00:47,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:47,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:47,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:47,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:47,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:47,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:47,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 456 transitions, 5953 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:47,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:47,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:47,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:48,510 INFO L124 PetriNetUnfolderBase]: 854/1595 cut-off events. [2024-06-14 12:00:48,510 INFO L125 PetriNetUnfolderBase]: For 455446/455446 co-relation queries the response was YES. [2024-06-14 12:00:48,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15113 conditions, 1595 events. 854/1595 cut-off events. For 455446/455446 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9629 event pairs, 42 based on Foata normal form. 2/1595 useless extension candidates. Maximal degree in co-relation 14883. Up to 1387 conditions per place. [2024-06-14 12:00:48,538 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 426 selfloop transitions, 45 changer transitions 0/474 dead transitions. [2024-06-14 12:00:48,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 474 transitions, 6971 flow [2024-06-14 12:00:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:00:48,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 12:00:48,539 INFO L175 Difference]: Start difference. First operand has 503 places, 456 transitions, 5953 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:00:48,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 474 transitions, 6971 flow [2024-06-14 12:00:50,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 474 transitions, 6861 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:50,460 INFO L231 Difference]: Finished difference. Result has 505 places, 457 transitions, 5973 flow [2024-06-14 12:00:50,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5843, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5973, PETRI_PLACES=505, PETRI_TRANSITIONS=457} [2024-06-14 12:00:50,460 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-14 12:00:50,460 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 457 transitions, 5973 flow [2024-06-14 12:00:50,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:50,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:50,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:50,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 12:00:50,461 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:50,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:50,461 INFO L85 PathProgramCache]: Analyzing trace with hash 569093851, now seen corresponding path program 1 times [2024-06-14 12:00:50,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:50,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006481471] [2024-06-14 12:00:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:50,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:52,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:52,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006481471] [2024-06-14 12:00:52,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006481471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:52,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:52,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:52,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906436966] [2024-06-14 12:00:52,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:52,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:52,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:52,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:52,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:52,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 457 transitions, 5973 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:52,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:52,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:52,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:52,921 INFO L124 PetriNetUnfolderBase]: 852/1592 cut-off events. [2024-06-14 12:00:52,921 INFO L125 PetriNetUnfolderBase]: For 431167/431167 co-relation queries the response was YES. [2024-06-14 12:00:52,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14883 conditions, 1592 events. 852/1592 cut-off events. For 431167/431167 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9627 event pairs, 43 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 14652. Up to 1405 conditions per place. [2024-06-14 12:00:52,942 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 438 selfloop transitions, 35 changer transitions 0/476 dead transitions. [2024-06-14 12:00:52,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 476 transitions, 6969 flow [2024-06-14 12:00:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:52,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:00:52,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 12:00:52,944 INFO L175 Difference]: Start difference. First operand has 505 places, 457 transitions, 5973 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:00:52,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 476 transitions, 6969 flow [2024-06-14 12:00:54,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 476 transitions, 6849 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:54,736 INFO L231 Difference]: Finished difference. Result has 507 places, 457 transitions, 5929 flow [2024-06-14 12:00:54,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5853, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5929, PETRI_PLACES=507, PETRI_TRANSITIONS=457} [2024-06-14 12:00:54,736 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-14 12:00:54,737 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 457 transitions, 5929 flow [2024-06-14 12:00:54,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:54,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:54,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:54,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 12:00:54,737 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:00:54,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash -146484795, now seen corresponding path program 2 times [2024-06-14 12:00:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:54,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630980463] [2024-06-14 12:00:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:57,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:57,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630980463] [2024-06-14 12:00:57,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630980463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:57,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:57,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:00:57,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346857334] [2024-06-14 12:00:57,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:57,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:00:57,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:00:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:00:57,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:00:57,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 457 transitions, 5929 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:00:57,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:57,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:00:57,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:58,055 INFO L124 PetriNetUnfolderBase]: 855/1599 cut-off events. [2024-06-14 12:00:58,055 INFO L125 PetriNetUnfolderBase]: For 436043/436043 co-relation queries the response was YES. [2024-06-14 12:00:58,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14925 conditions, 1599 events. 855/1599 cut-off events. For 436043/436043 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9689 event pairs, 41 based on Foata normal form. 1/1598 useless extension candidates. Maximal degree in co-relation 14693. Up to 1380 conditions per place. [2024-06-14 12:00:58,082 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 422 selfloop transitions, 51 changer transitions 0/476 dead transitions. [2024-06-14 12:00:58,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 476 transitions, 6995 flow [2024-06-14 12:00:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:00:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:00:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:00:58,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-14 12:00:58,083 INFO L175 Difference]: Start difference. First operand has 507 places, 457 transitions, 5929 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:00:58,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 476 transitions, 6995 flow [2024-06-14 12:01:00,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 476 transitions, 6729 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:00,007 INFO L231 Difference]: Finished difference. Result has 509 places, 459 transitions, 5852 flow [2024-06-14 12:01:00,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5665, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5852, PETRI_PLACES=509, PETRI_TRANSITIONS=459} [2024-06-14 12:01:00,008 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-14 12:01:00,008 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 459 transitions, 5852 flow [2024-06-14 12:01:00,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:00,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:00,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:00,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 12:01:00,008 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:00,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:00,009 INFO L85 PathProgramCache]: Analyzing trace with hash -146275545, now seen corresponding path program 3 times [2024-06-14 12:01:00,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:00,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605113231] [2024-06-14 12:01:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:00,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:01,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:01,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605113231] [2024-06-14 12:01:01,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605113231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:01,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:01,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:01,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839515725] [2024-06-14 12:01:01,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:01,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:01,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:01,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:01,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:01,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:01,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 459 transitions, 5852 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:01,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:01,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:01,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:02,503 INFO L124 PetriNetUnfolderBase]: 863/1614 cut-off events. [2024-06-14 12:01:02,503 INFO L125 PetriNetUnfolderBase]: For 458499/458499 co-relation queries the response was YES. [2024-06-14 12:01:02,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15067 conditions, 1614 events. 863/1614 cut-off events. For 458499/458499 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 9798 event pairs, 41 based on Foata normal form. 1/1613 useless extension candidates. Maximal degree in co-relation 14835. Up to 1350 conditions per place. [2024-06-14 12:01:02,531 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 416 selfloop transitions, 64 changer transitions 0/483 dead transitions. [2024-06-14 12:01:02,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 483 transitions, 7368 flow [2024-06-14 12:01:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:01:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:01:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-14 12:01:02,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-14 12:01:02,532 INFO L175 Difference]: Start difference. First operand has 509 places, 459 transitions, 5852 flow. Second operand 13 states and 161 transitions. [2024-06-14 12:01:02,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 483 transitions, 7368 flow [2024-06-14 12:01:04,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 483 transitions, 7207 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:04,519 INFO L231 Difference]: Finished difference. Result has 512 places, 463 transitions, 5988 flow [2024-06-14 12:01:04,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5691, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5988, PETRI_PLACES=512, PETRI_TRANSITIONS=463} [2024-06-14 12:01:04,519 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-14 12:01:04,519 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 463 transitions, 5988 flow [2024-06-14 12:01:04,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:04,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:04,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:04,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 12:01:04,520 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:04,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:04,520 INFO L85 PathProgramCache]: Analyzing trace with hash -146275266, now seen corresponding path program 1 times [2024-06-14 12:01:04,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:04,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130557155] [2024-06-14 12:01:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:04,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:05,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:05,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130557155] [2024-06-14 12:01:05,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130557155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:05,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:05,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:05,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866891517] [2024-06-14 12:01:05,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:05,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:05,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:05,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:06,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:06,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 463 transitions, 5988 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:06,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:06,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:06,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:06,818 INFO L124 PetriNetUnfolderBase]: 883/1658 cut-off events. [2024-06-14 12:01:06,818 INFO L125 PetriNetUnfolderBase]: For 628385/628385 co-relation queries the response was YES. [2024-06-14 12:01:06,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15476 conditions, 1658 events. 883/1658 cut-off events. For 628385/628385 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 10115 event pairs, 45 based on Foata normal form. 12/1668 useless extension candidates. Maximal degree in co-relation 15243. Up to 1395 conditions per place. [2024-06-14 12:01:06,861 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 430 selfloop transitions, 45 changer transitions 7/485 dead transitions. [2024-06-14 12:01:06,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 485 transitions, 7162 flow [2024-06-14 12:01:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:01:06,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:01:06,862 INFO L175 Difference]: Start difference. First operand has 512 places, 463 transitions, 5988 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:01:06,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 485 transitions, 7162 flow [2024-06-14 12:01:09,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 485 transitions, 7010 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:09,081 INFO L231 Difference]: Finished difference. Result has 514 places, 461 transitions, 5940 flow [2024-06-14 12:01:09,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5836, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5940, PETRI_PLACES=514, PETRI_TRANSITIONS=461} [2024-06-14 12:01:09,081 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-14 12:01:09,081 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 461 transitions, 5940 flow [2024-06-14 12:01:09,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:09,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:09,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:09,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 12:01:09,082 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:09,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash -146282985, now seen corresponding path program 4 times [2024-06-14 12:01:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:09,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586703242] [2024-06-14 12:01:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:09,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:10,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586703242] [2024-06-14 12:01:10,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586703242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:10,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:10,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:10,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403583702] [2024-06-14 12:01:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:10,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:10,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:10,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:10,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:11,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:11,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 461 transitions, 5940 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:11,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:11,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:11,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:11,744 INFO L124 PetriNetUnfolderBase]: 857/1607 cut-off events. [2024-06-14 12:01:11,744 INFO L125 PetriNetUnfolderBase]: For 453847/453847 co-relation queries the response was YES. [2024-06-14 12:01:11,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14876 conditions, 1607 events. 857/1607 cut-off events. For 453847/453847 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9763 event pairs, 41 based on Foata normal form. 1/1606 useless extension candidates. Maximal degree in co-relation 14641. Up to 1389 conditions per place. [2024-06-14 12:01:11,771 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 425 selfloop transitions, 50 changer transitions 0/478 dead transitions. [2024-06-14 12:01:11,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 478 transitions, 6932 flow [2024-06-14 12:01:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:01:11,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:01:11,772 INFO L175 Difference]: Start difference. First operand has 514 places, 461 transitions, 5940 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:01:11,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 478 transitions, 6932 flow [2024-06-14 12:01:13,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 478 transitions, 6736 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:13,761 INFO L231 Difference]: Finished difference. Result has 517 places, 461 transitions, 5849 flow [2024-06-14 12:01:13,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5744, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5849, PETRI_PLACES=517, PETRI_TRANSITIONS=461} [2024-06-14 12:01:13,761 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-14 12:01:13,762 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 461 transitions, 5849 flow [2024-06-14 12:01:13,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:13,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:13,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:13,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 12:01:13,762 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:13,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash 693355111, now seen corresponding path program 7 times [2024-06-14 12:01:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:13,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779294442] [2024-06-14 12:01:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779294442] [2024-06-14 12:01:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779294442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:15,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:01:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687659944] [2024-06-14 12:01:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:01:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:01:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:01:15,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:15,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 461 transitions, 5849 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:15,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:15,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:15,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:16,017 INFO L124 PetriNetUnfolderBase]: 861/1615 cut-off events. [2024-06-14 12:01:16,017 INFO L125 PetriNetUnfolderBase]: For 472913/472913 co-relation queries the response was YES. [2024-06-14 12:01:16,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14839 conditions, 1615 events. 861/1615 cut-off events. For 472913/472913 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 9857 event pairs, 43 based on Foata normal form. 2/1615 useless extension candidates. Maximal degree in co-relation 14603. Up to 1402 conditions per place. [2024-06-14 12:01:16,041 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 429 selfloop transitions, 45 changer transitions 0/477 dead transitions. [2024-06-14 12:01:16,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 477 transitions, 6869 flow [2024-06-14 12:01:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:01:16,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 12:01:16,042 INFO L175 Difference]: Start difference. First operand has 517 places, 461 transitions, 5849 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:01:16,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 477 transitions, 6869 flow [2024-06-14 12:01:18,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 477 transitions, 6764 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:18,208 INFO L231 Difference]: Finished difference. Result has 518 places, 462 transitions, 5876 flow [2024-06-14 12:01:18,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5744, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5876, PETRI_PLACES=518, PETRI_TRANSITIONS=462} [2024-06-14 12:01:18,209 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 486 predicate places. [2024-06-14 12:01:18,209 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 462 transitions, 5876 flow [2024-06-14 12:01:18,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:18,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:18,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:18,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 12:01:18,210 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:18,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash 687992731, now seen corresponding path program 8 times [2024-06-14 12:01:18,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:18,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957234183] [2024-06-14 12:01:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:19,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:19,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957234183] [2024-06-14 12:01:19,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957234183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:19,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:19,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:01:19,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337055042] [2024-06-14 12:01:19,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:19,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:01:19,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:19,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:01:19,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:01:19,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:19,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 462 transitions, 5876 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:19,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:19,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:19,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:20,697 INFO L124 PetriNetUnfolderBase]: 865/1623 cut-off events. [2024-06-14 12:01:20,697 INFO L125 PetriNetUnfolderBase]: For 478918/478918 co-relation queries the response was YES. [2024-06-14 12:01:20,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14951 conditions, 1623 events. 865/1623 cut-off events. For 478918/478918 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 9896 event pairs, 43 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 14714. Up to 1416 conditions per place. [2024-06-14 12:01:20,726 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 433 selfloop transitions, 43 changer transitions 0/479 dead transitions. [2024-06-14 12:01:20,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 479 transitions, 6917 flow [2024-06-14 12:01:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:01:20,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:01:20,727 INFO L175 Difference]: Start difference. First operand has 518 places, 462 transitions, 5876 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:01:20,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 479 transitions, 6917 flow [2024-06-14 12:01:22,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 479 transitions, 6793 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:22,862 INFO L231 Difference]: Finished difference. Result has 521 places, 464 transitions, 5902 flow [2024-06-14 12:01:22,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5754, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5902, PETRI_PLACES=521, PETRI_TRANSITIONS=464} [2024-06-14 12:01:22,862 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 489 predicate places. [2024-06-14 12:01:22,862 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 464 transitions, 5902 flow [2024-06-14 12:01:22,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:22,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:22,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:22,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 12:01:22,862 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:22,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:22,863 INFO L85 PathProgramCache]: Analyzing trace with hash 887294521, now seen corresponding path program 9 times [2024-06-14 12:01:22,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:22,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790472140] [2024-06-14 12:01:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:22,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:24,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:24,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790472140] [2024-06-14 12:01:24,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790472140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:24,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:24,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:01:24,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669298906] [2024-06-14 12:01:24,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:24,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:01:24,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:01:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:01:24,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:24,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 464 transitions, 5902 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:24,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:24,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:24,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:24,976 INFO L124 PetriNetUnfolderBase]: 869/1631 cut-off events. [2024-06-14 12:01:24,976 INFO L125 PetriNetUnfolderBase]: For 484204/484204 co-relation queries the response was YES. [2024-06-14 12:01:24,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15017 conditions, 1631 events. 869/1631 cut-off events. For 484204/484204 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 9962 event pairs, 45 based on Foata normal form. 2/1631 useless extension candidates. Maximal degree in co-relation 14778. Up to 1388 conditions per place. [2024-06-14 12:01:25,005 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 423 selfloop transitions, 54 changer transitions 0/480 dead transitions. [2024-06-14 12:01:25,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 480 transitions, 6932 flow [2024-06-14 12:01:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:25,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:01:25,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 12:01:25,006 INFO L175 Difference]: Start difference. First operand has 521 places, 464 transitions, 5902 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:01:25,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 480 transitions, 6932 flow [2024-06-14 12:01:27,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 480 transitions, 6815 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 12:01:27,236 INFO L231 Difference]: Finished difference. Result has 524 places, 465 transitions, 5939 flow [2024-06-14 12:01:27,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5785, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5939, PETRI_PLACES=524, PETRI_TRANSITIONS=465} [2024-06-14 12:01:27,237 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 492 predicate places. [2024-06-14 12:01:27,237 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 465 transitions, 5939 flow [2024-06-14 12:01:27,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:27,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:27,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:27,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 12:01:27,237 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:27,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash 687844861, now seen corresponding path program 10 times [2024-06-14 12:01:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:27,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444399165] [2024-06-14 12:01:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:27,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:28,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444399165] [2024-06-14 12:01:28,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444399165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:28,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:28,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:01:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32256969] [2024-06-14 12:01:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:28,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:01:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:01:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:01:28,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:28,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 465 transitions, 5939 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:28,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:28,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:28,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:29,425 INFO L124 PetriNetUnfolderBase]: 873/1637 cut-off events. [2024-06-14 12:01:29,426 INFO L125 PetriNetUnfolderBase]: For 489809/489809 co-relation queries the response was YES. [2024-06-14 12:01:29,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15104 conditions, 1637 events. 873/1637 cut-off events. For 489809/489809 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10000 event pairs, 43 based on Foata normal form. 2/1637 useless extension candidates. Maximal degree in co-relation 14864. Up to 1427 conditions per place. [2024-06-14 12:01:29,457 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 437 selfloop transitions, 42 changer transitions 0/482 dead transitions. [2024-06-14 12:01:29,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 482 transitions, 6977 flow [2024-06-14 12:01:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:01:29,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:01:29,459 INFO L175 Difference]: Start difference. First operand has 524 places, 465 transitions, 5939 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:01:29,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 482 transitions, 6977 flow [2024-06-14 12:01:31,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 482 transitions, 6833 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:31,606 INFO L231 Difference]: Finished difference. Result has 526 places, 466 transitions, 5927 flow [2024-06-14 12:01:31,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5795, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5927, PETRI_PLACES=526, PETRI_TRANSITIONS=466} [2024-06-14 12:01:31,606 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 494 predicate places. [2024-06-14 12:01:31,606 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 466 transitions, 5927 flow [2024-06-14 12:01:31,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:31,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:31,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:31,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 12:01:31,607 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:31,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:31,607 INFO L85 PathProgramCache]: Analyzing trace with hash 693570592, now seen corresponding path program 2 times [2024-06-14 12:01:31,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:31,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738621633] [2024-06-14 12:01:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:31,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738621633] [2024-06-14 12:01:33,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738621633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:33,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:33,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:33,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658740257] [2024-06-14 12:01:33,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:33,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:33,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:33,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:33,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:33,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:33,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 466 transitions, 5927 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:33,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:33,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:33,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:34,012 INFO L124 PetriNetUnfolderBase]: 893/1683 cut-off events. [2024-06-14 12:01:34,013 INFO L125 PetriNetUnfolderBase]: For 655266/655266 co-relation queries the response was YES. [2024-06-14 12:01:34,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15457 conditions, 1683 events. 893/1683 cut-off events. For 655266/655266 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10335 event pairs, 49 based on Foata normal form. 12/1693 useless extension candidates. Maximal degree in co-relation 15216. Up to 1419 conditions per place. [2024-06-14 12:01:34,041 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 430 selfloop transitions, 46 changer transitions 7/486 dead transitions. [2024-06-14 12:01:34,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 486 transitions, 7099 flow [2024-06-14 12:01:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:01:34,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:01:34,042 INFO L175 Difference]: Start difference. First operand has 526 places, 466 transitions, 5927 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:01:34,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 486 transitions, 7099 flow [2024-06-14 12:01:36,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 486 transitions, 6977 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:36,263 INFO L231 Difference]: Finished difference. Result has 528 places, 464 transitions, 5912 flow [2024-06-14 12:01:36,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5805, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5912, PETRI_PLACES=528, PETRI_TRANSITIONS=464} [2024-06-14 12:01:36,264 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 496 predicate places. [2024-06-14 12:01:36,264 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 464 transitions, 5912 flow [2024-06-14 12:01:36,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:36,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:36,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:36,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 12:01:36,265 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:36,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:36,265 INFO L85 PathProgramCache]: Analyzing trace with hash 887510002, now seen corresponding path program 3 times [2024-06-14 12:01:36,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:36,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995227776] [2024-06-14 12:01:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:36,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:37,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:37,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995227776] [2024-06-14 12:01:37,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995227776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:37,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:37,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:37,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127441309] [2024-06-14 12:01:37,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:37,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:37,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:37,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:37,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:38,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:38,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 464 transitions, 5912 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:38,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:38,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:38,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:38,777 INFO L124 PetriNetUnfolderBase]: 873/1643 cut-off events. [2024-06-14 12:01:38,777 INFO L125 PetriNetUnfolderBase]: For 502770/502770 co-relation queries the response was YES. [2024-06-14 12:01:38,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15178 conditions, 1643 events. 873/1643 cut-off events. For 502770/502770 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10063 event pairs, 45 based on Foata normal form. 2/1643 useless extension candidates. Maximal degree in co-relation 14936. Up to 1377 conditions per place. [2024-06-14 12:01:38,808 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 416 selfloop transitions, 61 changer transitions 0/480 dead transitions. [2024-06-14 12:01:38,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 480 transitions, 6964 flow [2024-06-14 12:01:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:01:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:01:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:01:38,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 12:01:38,809 INFO L175 Difference]: Start difference. First operand has 528 places, 464 transitions, 5912 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:01:38,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 480 transitions, 6964 flow [2024-06-14 12:01:40,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 480 transitions, 6808 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-14 12:01:40,923 INFO L231 Difference]: Finished difference. Result has 530 places, 465 transitions, 5946 flow [2024-06-14 12:01:40,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5756, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5946, PETRI_PLACES=530, PETRI_TRANSITIONS=465} [2024-06-14 12:01:40,924 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 498 predicate places. [2024-06-14 12:01:40,924 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 465 transitions, 5946 flow [2024-06-14 12:01:40,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:40,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:40,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:40,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 12:01:40,924 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:40,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1122611755, now seen corresponding path program 5 times [2024-06-14 12:01:40,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:40,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161927306] [2024-06-14 12:01:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:42,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:42,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161927306] [2024-06-14 12:01:42,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161927306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:42,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:42,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:42,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340580285] [2024-06-14 12:01:42,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:42,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:42,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:42,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:42,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:42,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:42,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 465 transitions, 5946 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:42,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:42,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:42,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:43,421 INFO L124 PetriNetUnfolderBase]: 871/1638 cut-off events. [2024-06-14 12:01:43,421 INFO L125 PetriNetUnfolderBase]: For 473318/473318 co-relation queries the response was YES. [2024-06-14 12:01:43,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14894 conditions, 1638 events. 871/1638 cut-off events. For 473318/473318 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10049 event pairs, 45 based on Foata normal form. 1/1637 useless extension candidates. Maximal degree in co-relation 14651. Up to 1391 conditions per place. [2024-06-14 12:01:43,449 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 426 selfloop transitions, 53 changer transitions 0/482 dead transitions. [2024-06-14 12:01:43,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 482 transitions, 7310 flow [2024-06-14 12:01:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:43,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:01:43,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:01:43,450 INFO L175 Difference]: Start difference. First operand has 530 places, 465 transitions, 5946 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:01:43,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 482 transitions, 7310 flow [2024-06-14 12:01:45,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 482 transitions, 7062 flow, removed 56 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:45,663 INFO L231 Difference]: Finished difference. Result has 532 places, 465 transitions, 5809 flow [2024-06-14 12:01:45,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5698, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5809, PETRI_PLACES=532, PETRI_TRANSITIONS=465} [2024-06-14 12:01:45,663 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 500 predicate places. [2024-06-14 12:01:45,664 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 465 transitions, 5809 flow [2024-06-14 12:01:45,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:45,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:45,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:45,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 12:01:45,664 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:45,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash 693361063, now seen corresponding path program 6 times [2024-06-14 12:01:45,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:45,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041663021] [2024-06-14 12:01:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:45,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:47,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041663021] [2024-06-14 12:01:47,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041663021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:47,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:47,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448864385] [2024-06-14 12:01:47,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:47,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:47,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:47,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:47,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 465 transitions, 5809 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:47,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:47,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:47,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:48,485 INFO L124 PetriNetUnfolderBase]: 874/1643 cut-off events. [2024-06-14 12:01:48,485 INFO L125 PetriNetUnfolderBase]: For 476329/476329 co-relation queries the response was YES. [2024-06-14 12:01:48,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14794 conditions, 1643 events. 874/1643 cut-off events. For 476329/476329 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10069 event pairs, 45 based on Foata normal form. 1/1642 useless extension candidates. Maximal degree in co-relation 14551. Up to 1426 conditions per place. [2024-06-14 12:01:48,511 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 428 selfloop transitions, 51 changer transitions 0/482 dead transitions. [2024-06-14 12:01:48,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 482 transitions, 6881 flow [2024-06-14 12:01:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:01:48,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-14 12:01:48,512 INFO L175 Difference]: Start difference. First operand has 532 places, 465 transitions, 5809 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:01:48,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 482 transitions, 6881 flow [2024-06-14 12:01:50,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 482 transitions, 6755 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:01:50,580 INFO L231 Difference]: Finished difference. Result has 533 places, 467 transitions, 5872 flow [2024-06-14 12:01:50,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5689, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5872, PETRI_PLACES=533, PETRI_TRANSITIONS=467} [2024-06-14 12:01:50,580 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 501 predicate places. [2024-06-14 12:01:50,580 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 467 transitions, 5872 flow [2024-06-14 12:01:50,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:50,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:50,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:50,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 12:01:50,581 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:50,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:50,581 INFO L85 PathProgramCache]: Analyzing trace with hash 693562873, now seen corresponding path program 7 times [2024-06-14 12:01:50,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:50,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184468465] [2024-06-14 12:01:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:50,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:52,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:52,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184468465] [2024-06-14 12:01:52,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184468465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:52,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:52,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432150012] [2024-06-14 12:01:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:52,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:52,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:52,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 467 transitions, 5872 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:52,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:52,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:52,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:53,740 INFO L124 PetriNetUnfolderBase]: 872/1640 cut-off events. [2024-06-14 12:01:53,740 INFO L125 PetriNetUnfolderBase]: For 464556/464556 co-relation queries the response was YES. [2024-06-14 12:01:53,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14584 conditions, 1640 events. 872/1640 cut-off events. For 464556/464556 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10059 event pairs, 45 based on Foata normal form. 1/1639 useless extension candidates. Maximal degree in co-relation 14340. Up to 1402 conditions per place. [2024-06-14 12:01:53,778 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 430 selfloop transitions, 50 changer transitions 0/483 dead transitions. [2024-06-14 12:01:53,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 483 transitions, 6872 flow [2024-06-14 12:01:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:01:53,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-14 12:01:53,779 INFO L175 Difference]: Start difference. First operand has 533 places, 467 transitions, 5872 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:01:53,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 483 transitions, 6872 flow [2024-06-14 12:01:55,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 483 transitions, 6671 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-14 12:01:55,942 INFO L231 Difference]: Finished difference. Result has 535 places, 467 transitions, 5776 flow [2024-06-14 12:01:55,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5671, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5776, PETRI_PLACES=535, PETRI_TRANSITIONS=467} [2024-06-14 12:01:55,943 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2024-06-14 12:01:55,943 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 467 transitions, 5776 flow [2024-06-14 12:01:55,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:55,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:01:55,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:01:55,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 12:01:55,944 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:01:55,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:01:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash 887300473, now seen corresponding path program 8 times [2024-06-14 12:01:55,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:01:55,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594522751] [2024-06-14 12:01:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:01:55,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:01:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:01:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:01:57,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:01:57,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594522751] [2024-06-14 12:01:57,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594522751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:01:57,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:01:57,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:01:57,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739975586] [2024-06-14 12:01:57,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:01:57,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:01:57,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:01:57,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:01:57,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:01:57,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:01:57,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 467 transitions, 5776 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:01:57,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:01:57,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:01:57,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:01:58,517 INFO L124 PetriNetUnfolderBase]: 875/1647 cut-off events. [2024-06-14 12:01:58,518 INFO L125 PetriNetUnfolderBase]: For 469217/469217 co-relation queries the response was YES. [2024-06-14 12:01:58,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14602 conditions, 1647 events. 875/1647 cut-off events. For 469217/469217 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10116 event pairs, 45 based on Foata normal form. 1/1646 useless extension candidates. Maximal degree in co-relation 14357. Up to 1371 conditions per place. [2024-06-14 12:01:58,547 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 411 selfloop transitions, 70 changer transitions 0/484 dead transitions. [2024-06-14 12:01:58,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 484 transitions, 6856 flow [2024-06-14 12:01:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:01:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:01:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:01:58,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 12:01:58,549 INFO L175 Difference]: Start difference. First operand has 535 places, 467 transitions, 5776 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:01:58,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 484 transitions, 6856 flow [2024-06-14 12:02:00,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 484 transitions, 6744 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:00,791 INFO L231 Difference]: Finished difference. Result has 536 places, 469 transitions, 5895 flow [2024-06-14 12:02:00,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5664, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5895, PETRI_PLACES=536, PETRI_TRANSITIONS=469} [2024-06-14 12:02:00,792 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-14 12:02:00,792 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 469 transitions, 5895 flow [2024-06-14 12:02:00,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:00,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:00,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:00,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 12:02:00,793 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:00,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash 887509723, now seen corresponding path program 9 times [2024-06-14 12:02:00,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:00,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897499436] [2024-06-14 12:02:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:02,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:02,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897499436] [2024-06-14 12:02:02,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897499436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:02,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:02,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505626974] [2024-06-14 12:02:02,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:02,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:02,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:02,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:02,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:02,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:02,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 469 transitions, 5895 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:02,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:02,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:02,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:03,136 INFO L124 PetriNetUnfolderBase]: 878/1652 cut-off events. [2024-06-14 12:02:03,137 INFO L125 PetriNetUnfolderBase]: For 475189/475189 co-relation queries the response was YES. [2024-06-14 12:02:03,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14762 conditions, 1652 events. 878/1652 cut-off events. For 475189/475189 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10144 event pairs, 45 based on Foata normal form. 1/1651 useless extension candidates. Maximal degree in co-relation 14516. Up to 1327 conditions per place. [2024-06-14 12:02:03,168 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 399 selfloop transitions, 85 changer transitions 0/487 dead transitions. [2024-06-14 12:02:03,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 487 transitions, 7731 flow [2024-06-14 12:02:03,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:02:03,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-14 12:02:03,170 INFO L175 Difference]: Start difference. First operand has 536 places, 469 transitions, 5895 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:02:03,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 487 transitions, 7731 flow [2024-06-14 12:02:05,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 487 transitions, 7528 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:05,298 INFO L231 Difference]: Finished difference. Result has 537 places, 471 transitions, 5956 flow [2024-06-14 12:02:05,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5692, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5956, PETRI_PLACES=537, PETRI_TRANSITIONS=471} [2024-06-14 12:02:05,299 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 505 predicate places. [2024-06-14 12:02:05,299 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 471 transitions, 5956 flow [2024-06-14 12:02:05,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:05,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:05,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:05,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 12:02:05,299 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:05,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash 887502283, now seen corresponding path program 10 times [2024-06-14 12:02:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:05,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858131474] [2024-06-14 12:02:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:07,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:07,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858131474] [2024-06-14 12:02:07,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858131474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:07,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:07,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:07,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958384137] [2024-06-14 12:02:07,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:07,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:07,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:07,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:07,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:07,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:07,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 471 transitions, 5956 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:07,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:07,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:07,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:07,994 INFO L124 PetriNetUnfolderBase]: 876/1649 cut-off events. [2024-06-14 12:02:07,994 INFO L125 PetriNetUnfolderBase]: For 461914/461914 co-relation queries the response was YES. [2024-06-14 12:02:08,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14531 conditions, 1649 events. 876/1649 cut-off events. For 461914/461914 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10144 event pairs, 47 based on Foata normal form. 1/1648 useless extension candidates. Maximal degree in co-relation 14284. Up to 1373 conditions per place. [2024-06-14 12:02:08,022 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 414 selfloop transitions, 69 changer transitions 0/486 dead transitions. [2024-06-14 12:02:08,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 486 transitions, 6958 flow [2024-06-14 12:02:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:02:08,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:02:08,024 INFO L175 Difference]: Start difference. First operand has 537 places, 471 transitions, 5956 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:02:08,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 486 transitions, 6958 flow [2024-06-14 12:02:10,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 486 transitions, 6571 flow, removed 66 selfloop flow, removed 12 redundant places. [2024-06-14 12:02:10,295 INFO L231 Difference]: Finished difference. Result has 537 places, 471 transitions, 5712 flow [2024-06-14 12:02:10,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5569, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5712, PETRI_PLACES=537, PETRI_TRANSITIONS=471} [2024-06-14 12:02:10,295 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 505 predicate places. [2024-06-14 12:02:10,295 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 471 transitions, 5712 flow [2024-06-14 12:02:10,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:10,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:10,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:10,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 12:02:10,296 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:10,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash 894928612, now seen corresponding path program 4 times [2024-06-14 12:02:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094370589] [2024-06-14 12:02:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:10,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:12,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094370589] [2024-06-14 12:02:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094370589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:12,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198307275] [2024-06-14 12:02:12,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:12,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:12,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:12,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 471 transitions, 5712 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:12,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:12,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:12,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:12,911 INFO L124 PetriNetUnfolderBase]: 887/1670 cut-off events. [2024-06-14 12:02:12,911 INFO L125 PetriNetUnfolderBase]: For 516150/516150 co-relation queries the response was YES. [2024-06-14 12:02:12,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14950 conditions, 1670 events. 887/1670 cut-off events. For 516150/516150 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10300 event pairs, 48 based on Foata normal form. 2/1670 useless extension candidates. Maximal degree in co-relation 14705. Up to 1369 conditions per place. [2024-06-14 12:02:12,942 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 417 selfloop transitions, 71 changer transitions 0/491 dead transitions. [2024-06-14 12:02:12,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 491 transitions, 7228 flow [2024-06-14 12:02:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:02:12,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:02:12,944 INFO L175 Difference]: Start difference. First operand has 537 places, 471 transitions, 5712 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:02:12,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 491 transitions, 7228 flow [2024-06-14 12:02:15,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 491 transitions, 7074 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:02:15,261 INFO L231 Difference]: Finished difference. Result has 538 places, 473 transitions, 5830 flow [2024-06-14 12:02:15,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5558, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5830, PETRI_PLACES=538, PETRI_TRANSITIONS=473} [2024-06-14 12:02:15,262 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 506 predicate places. [2024-06-14 12:02:15,262 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 473 transitions, 5830 flow [2024-06-14 12:02:15,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:15,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:15,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:15,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 12:02:15,262 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:15,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:15,262 INFO L85 PathProgramCache]: Analyzing trace with hash 894659842, now seen corresponding path program 5 times [2024-06-14 12:02:15,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:15,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857202938] [2024-06-14 12:02:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:15,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:16,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:16,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857202938] [2024-06-14 12:02:16,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857202938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:16,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:16,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:16,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510421947] [2024-06-14 12:02:16,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:16,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:16,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:16,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:16,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:16,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 473 transitions, 5830 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:16,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:16,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:16,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:17,719 INFO L124 PetriNetUnfolderBase]: 884/1665 cut-off events. [2024-06-14 12:02:17,719 INFO L125 PetriNetUnfolderBase]: For 486296/486296 co-relation queries the response was YES. [2024-06-14 12:02:17,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14546 conditions, 1665 events. 884/1665 cut-off events. For 486296/486296 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10265 event pairs, 49 based on Foata normal form. 2/1665 useless extension candidates. Maximal degree in co-relation 14300. Up to 1399 conditions per place. [2024-06-14 12:02:17,753 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 422 selfloop transitions, 63 changer transitions 0/488 dead transitions. [2024-06-14 12:02:17,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 488 transitions, 6836 flow [2024-06-14 12:02:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:02:17,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-14 12:02:17,755 INFO L175 Difference]: Start difference. First operand has 538 places, 473 transitions, 5830 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:02:17,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 488 transitions, 6836 flow [2024-06-14 12:02:19,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 488 transitions, 6612 flow, removed 61 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:19,987 INFO L231 Difference]: Finished difference. Result has 539 places, 473 transitions, 5736 flow [2024-06-14 12:02:19,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5606, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5736, PETRI_PLACES=539, PETRI_TRANSITIONS=473} [2024-06-14 12:02:19,988 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-14 12:02:19,988 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 473 transitions, 5736 flow [2024-06-14 12:02:19,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:19,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:19,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:19,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 12:02:19,989 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:19,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash 894652123, now seen corresponding path program 11 times [2024-06-14 12:02:19,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:19,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725851161] [2024-06-14 12:02:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:19,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:21,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:21,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725851161] [2024-06-14 12:02:21,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725851161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:21,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:21,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382590485] [2024-06-14 12:02:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:21,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:21,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:21,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:21,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 473 transitions, 5736 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:21,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:21,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:21,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:22,555 INFO L124 PetriNetUnfolderBase]: 882/1662 cut-off events. [2024-06-14 12:02:22,555 INFO L125 PetriNetUnfolderBase]: For 451644/451644 co-relation queries the response was YES. [2024-06-14 12:02:22,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14129 conditions, 1662 events. 882/1662 cut-off events. For 451644/451644 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10271 event pairs, 49 based on Foata normal form. 1/1661 useless extension candidates. Maximal degree in co-relation 13885. Up to 1386 conditions per place. [2024-06-14 12:02:22,583 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 412 selfloop transitions, 73 changer transitions 0/488 dead transitions. [2024-06-14 12:02:22,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 488 transitions, 6742 flow [2024-06-14 12:02:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:02:22,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-14 12:02:22,584 INFO L175 Difference]: Start difference. First operand has 539 places, 473 transitions, 5736 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:02:22,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 488 transitions, 6742 flow [2024-06-14 12:02:24,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 488 transitions, 6552 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:24,582 INFO L231 Difference]: Finished difference. Result has 541 places, 473 transitions, 5697 flow [2024-06-14 12:02:24,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5546, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5697, PETRI_PLACES=541, PETRI_TRANSITIONS=473} [2024-06-14 12:02:24,583 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 509 predicate places. [2024-06-14 12:02:24,583 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 473 transitions, 5697 flow [2024-06-14 12:02:24,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:24,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:24,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:24,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 12:02:24,583 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:24,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1033783143, now seen corresponding path program 11 times [2024-06-14 12:02:24,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:24,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762736008] [2024-06-14 12:02:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:24,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:25,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:25,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762736008] [2024-06-14 12:02:25,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762736008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:25,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:25,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:25,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968579169] [2024-06-14 12:02:25,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:25,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:25,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:25,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:25,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 473 transitions, 5697 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:25,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:25,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:25,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:26,588 INFO L124 PetriNetUnfolderBase]: 886/1670 cut-off events. [2024-06-14 12:02:26,588 INFO L125 PetriNetUnfolderBase]: For 474884/474884 co-relation queries the response was YES. [2024-06-14 12:02:26,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14206 conditions, 1670 events. 886/1670 cut-off events. For 474884/474884 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 10319 event pairs, 53 based on Foata normal form. 2/1670 useless extension candidates. Maximal degree in co-relation 13961. Up to 1378 conditions per place. [2024-06-14 12:02:26,617 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 414 selfloop transitions, 70 changer transitions 0/487 dead transitions. [2024-06-14 12:02:26,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 487 transitions, 6739 flow [2024-06-14 12:02:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:02:26,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 12:02:26,621 INFO L175 Difference]: Start difference. First operand has 541 places, 473 transitions, 5697 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:02:26,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 487 transitions, 6739 flow [2024-06-14 12:02:28,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 487 transitions, 6530 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 12:02:28,843 INFO L231 Difference]: Finished difference. Result has 540 places, 474 transitions, 5678 flow [2024-06-14 12:02:28,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5488, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5678, PETRI_PLACES=540, PETRI_TRANSITIONS=474} [2024-06-14 12:02:28,844 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 508 predicate places. [2024-06-14 12:02:28,844 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 474 transitions, 5678 flow [2024-06-14 12:02:28,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:28,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:28,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:28,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 12:02:28,844 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:28,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1741547591, now seen corresponding path program 12 times [2024-06-14 12:02:28,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:28,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917696862] [2024-06-14 12:02:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:28,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:30,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:30,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917696862] [2024-06-14 12:02:30,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917696862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:30,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:30,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:30,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500062499] [2024-06-14 12:02:30,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:30,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:30,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:30,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:30,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:30,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 474 transitions, 5678 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:30,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:30,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:30,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:30,909 INFO L124 PetriNetUnfolderBase]: 890/1678 cut-off events. [2024-06-14 12:02:30,910 INFO L125 PetriNetUnfolderBase]: For 480813/480813 co-relation queries the response was YES. [2024-06-14 12:02:30,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14303 conditions, 1678 events. 890/1678 cut-off events. For 480813/480813 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10398 event pairs, 53 based on Foata normal form. 2/1678 useless extension candidates. Maximal degree in co-relation 14057. Up to 1454 conditions per place. [2024-06-14 12:02:30,937 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 438 selfloop transitions, 48 changer transitions 0/489 dead transitions. [2024-06-14 12:02:30,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 489 transitions, 6740 flow [2024-06-14 12:02:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:30,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:02:30,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-06-14 12:02:30,938 INFO L175 Difference]: Start difference. First operand has 540 places, 474 transitions, 5678 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:02:30,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 489 transitions, 6740 flow [2024-06-14 12:02:33,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 489 transitions, 6558 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:02:33,197 INFO L231 Difference]: Finished difference. Result has 543 places, 476 transitions, 5663 flow [2024-06-14 12:02:33,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5498, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5663, PETRI_PLACES=543, PETRI_TRANSITIONS=476} [2024-06-14 12:02:33,197 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 511 predicate places. [2024-06-14 12:02:33,197 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 476 transitions, 5663 flow [2024-06-14 12:02:33,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:33,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:33,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:33,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 12:02:33,198 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:33,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:33,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1741695461, now seen corresponding path program 13 times [2024-06-14 12:02:33,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:33,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221750760] [2024-06-14 12:02:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:33,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:34,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:34,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221750760] [2024-06-14 12:02:34,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221750760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:34,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:34,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:34,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391185238] [2024-06-14 12:02:34,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:34,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:34,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:34,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:34,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:34,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 476 transitions, 5663 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:34,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:34,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:34,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:35,335 INFO L124 PetriNetUnfolderBase]: 894/1686 cut-off events. [2024-06-14 12:02:35,335 INFO L125 PetriNetUnfolderBase]: For 485616/485616 co-relation queries the response was YES. [2024-06-14 12:02:35,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14325 conditions, 1686 events. 894/1686 cut-off events. For 485616/485616 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 10435 event pairs, 53 based on Foata normal form. 2/1686 useless extension candidates. Maximal degree in co-relation 14077. Up to 1436 conditions per place. [2024-06-14 12:02:35,363 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 443 selfloop transitions, 46 changer transitions 0/492 dead transitions. [2024-06-14 12:02:35,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 492 transitions, 6725 flow [2024-06-14 12:02:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:02:35,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:02:35,364 INFO L175 Difference]: Start difference. First operand has 543 places, 476 transitions, 5663 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:02:35,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 492 transitions, 6725 flow [2024-06-14 12:02:37,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 492 transitions, 6590 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 12:02:37,614 INFO L231 Difference]: Finished difference. Result has 546 places, 477 transitions, 5674 flow [2024-06-14 12:02:37,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5528, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5674, PETRI_PLACES=546, PETRI_TRANSITIONS=477} [2024-06-14 12:02:37,615 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 514 predicate places. [2024-06-14 12:02:37,615 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 477 transitions, 5674 flow [2024-06-14 12:02:37,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:37,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:37,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:37,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 12:02:37,615 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:37,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:37,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1542245801, now seen corresponding path program 14 times [2024-06-14 12:02:37,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:37,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185317258] [2024-06-14 12:02:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:37,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:39,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:39,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185317258] [2024-06-14 12:02:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185317258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:39,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:39,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:39,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932228283] [2024-06-14 12:02:39,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:39,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:39,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:39,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:39,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 477 transitions, 5674 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:39,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:39,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:39,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:39,902 INFO L124 PetriNetUnfolderBase]: 898/1694 cut-off events. [2024-06-14 12:02:39,902 INFO L125 PetriNetUnfolderBase]: For 491046/491046 co-relation queries the response was YES. [2024-06-14 12:02:39,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14385 conditions, 1694 events. 898/1694 cut-off events. For 491046/491046 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 10550 event pairs, 55 based on Foata normal form. 2/1694 useless extension candidates. Maximal degree in co-relation 14136. Up to 1455 conditions per place. [2024-06-14 12:02:39,930 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 433 selfloop transitions, 55 changer transitions 0/491 dead transitions. [2024-06-14 12:02:39,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 491 transitions, 6730 flow [2024-06-14 12:02:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:02:39,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 12:02:39,931 INFO L175 Difference]: Start difference. First operand has 546 places, 477 transitions, 5674 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:02:39,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 491 transitions, 6730 flow [2024-06-14 12:02:42,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 491 transitions, 6594 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 12:02:42,167 INFO L231 Difference]: Finished difference. Result has 548 places, 478 transitions, 5704 flow [2024-06-14 12:02:42,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5538, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5704, PETRI_PLACES=548, PETRI_TRANSITIONS=478} [2024-06-14 12:02:42,167 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 516 predicate places. [2024-06-14 12:02:42,167 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 478 transitions, 5704 flow [2024-06-14 12:02:42,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:42,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:42,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:42,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 12:02:42,168 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:42,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1736185211, now seen corresponding path program 15 times [2024-06-14 12:02:42,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:42,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009922552] [2024-06-14 12:02:42,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:42,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:43,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009922552] [2024-06-14 12:02:43,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009922552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:43,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:43,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:02:43,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698838064] [2024-06-14 12:02:43,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:43,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:02:43,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:02:43,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:02:43,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:43,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 478 transitions, 5704 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:43,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:43,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:43,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:44,258 INFO L124 PetriNetUnfolderBase]: 902/1702 cut-off events. [2024-06-14 12:02:44,258 INFO L125 PetriNetUnfolderBase]: For 496660/496660 co-relation queries the response was YES. [2024-06-14 12:02:44,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14465 conditions, 1702 events. 902/1702 cut-off events. For 496660/496660 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 10574 event pairs, 53 based on Foata normal form. 2/1702 useless extension candidates. Maximal degree in co-relation 14215. Up to 1472 conditions per place. [2024-06-14 12:02:44,285 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 438 selfloop transitions, 51 changer transitions 0/492 dead transitions. [2024-06-14 12:02:44,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 492 transitions, 6764 flow [2024-06-14 12:02:44,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:02:44,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:02:44,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:02:44,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-14 12:02:44,286 INFO L175 Difference]: Start difference. First operand has 548 places, 478 transitions, 5704 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:02:44,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 492 transitions, 6764 flow [2024-06-14 12:02:46,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 492 transitions, 6608 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 12:02:46,668 INFO L231 Difference]: Finished difference. Result has 550 places, 479 transitions, 5708 flow [2024-06-14 12:02:46,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5548, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5708, PETRI_PLACES=550, PETRI_TRANSITIONS=479} [2024-06-14 12:02:46,669 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 518 predicate places. [2024-06-14 12:02:46,669 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 479 transitions, 5708 flow [2024-06-14 12:02:46,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:46,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:46,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:46,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 12:02:46,670 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:46,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:46,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1736179259, now seen corresponding path program 12 times [2024-06-14 12:02:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:46,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380063456] [2024-06-14 12:02:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:46,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:49,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:49,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380063456] [2024-06-14 12:02:49,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380063456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:49,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:49,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:49,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981393117] [2024-06-14 12:02:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:49,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:49,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:49,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:49,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 479 transitions, 5708 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:49,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:49,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:49,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:49,989 INFO L124 PetriNetUnfolderBase]: 905/1707 cut-off events. [2024-06-14 12:02:49,989 INFO L125 PetriNetUnfolderBase]: For 482196/482196 co-relation queries the response was YES. [2024-06-14 12:02:50,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14480 conditions, 1707 events. 905/1707 cut-off events. For 482196/482196 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 10602 event pairs, 53 based on Foata normal form. 1/1706 useless extension candidates. Maximal degree in co-relation 14229. Up to 1468 conditions per place. [2024-06-14 12:02:50,018 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 434 selfloop transitions, 57 changer transitions 0/494 dead transitions. [2024-06-14 12:02:50,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 494 transitions, 6796 flow [2024-06-14 12:02:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:02:50,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:02:50,019 INFO L175 Difference]: Start difference. First operand has 550 places, 479 transitions, 5708 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:02:50,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 494 transitions, 6796 flow [2024-06-14 12:02:52,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 494 transitions, 6646 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 12:02:52,311 INFO L231 Difference]: Finished difference. Result has 553 places, 481 transitions, 5757 flow [2024-06-14 12:02:52,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5558, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5757, PETRI_PLACES=553, PETRI_TRANSITIONS=481} [2024-06-14 12:02:52,311 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 521 predicate places. [2024-06-14 12:02:52,312 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 481 transitions, 5757 flow [2024-06-14 12:02:52,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:52,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:52,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:52,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 12:02:52,312 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:52,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1542239849, now seen corresponding path program 13 times [2024-06-14 12:02:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:52,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292868201] [2024-06-14 12:02:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:52,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:54,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:54,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:54,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292868201] [2024-06-14 12:02:54,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292868201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:54,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:54,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:54,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755214279] [2024-06-14 12:02:54,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:54,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:54,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:54,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:54,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:54,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:54,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 481 transitions, 5757 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:54,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:54,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:54,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:54,999 INFO L124 PetriNetUnfolderBase]: 908/1712 cut-off events. [2024-06-14 12:02:54,999 INFO L125 PetriNetUnfolderBase]: For 486340/486340 co-relation queries the response was YES. [2024-06-14 12:02:55,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14515 conditions, 1712 events. 908/1712 cut-off events. For 486340/486340 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 10669 event pairs, 55 based on Foata normal form. 1/1711 useless extension candidates. Maximal degree in co-relation 14263. Up to 1446 conditions per place. [2024-06-14 12:02:55,024 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 424 selfloop transitions, 69 changer transitions 0/496 dead transitions. [2024-06-14 12:02:55,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 496 transitions, 6853 flow [2024-06-14 12:02:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:02:55,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:02:55,025 INFO L175 Difference]: Start difference. First operand has 553 places, 481 transitions, 5757 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:02:55,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 496 transitions, 6853 flow [2024-06-14 12:02:57,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 496 transitions, 6678 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-14 12:02:57,265 INFO L231 Difference]: Finished difference. Result has 555 places, 483 transitions, 5809 flow [2024-06-14 12:02:57,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5582, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5809, PETRI_PLACES=555, PETRI_TRANSITIONS=483} [2024-06-14 12:02:57,266 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 523 predicate places. [2024-06-14 12:02:57,266 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 483 transitions, 5809 flow [2024-06-14 12:02:57,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:57,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:02:57,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:02:57,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 12:02:57,267 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:02:57,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:02:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1300022334, now seen corresponding path program 6 times [2024-06-14 12:02:57,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:02:57,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732737344] [2024-06-14 12:02:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:02:57,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:02:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:02:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:02:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:02:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732737344] [2024-06-14 12:02:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732737344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:02:58,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:02:58,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:02:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569639244] [2024-06-14 12:02:58,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:02:58,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:02:58,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:02:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:02:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:02:58,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:02:58,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 483 transitions, 5809 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:02:58,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:02:58,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:02:58,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:02:59,535 INFO L124 PetriNetUnfolderBase]: 948/1794 cut-off events. [2024-06-14 12:02:59,536 INFO L125 PetriNetUnfolderBase]: For 742787/742787 co-relation queries the response was YES. [2024-06-14 12:02:59,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17618 conditions, 1794 events. 948/1794 cut-off events. For 742787/742787 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 11215 event pairs, 67 based on Foata normal form. 2/1794 useless extension candidates. Maximal degree in co-relation 17365. Up to 1225 conditions per place. [2024-06-14 12:02:59,566 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 376 selfloop transitions, 127 changer transitions 0/506 dead transitions. [2024-06-14 12:02:59,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 506 transitions, 7471 flow [2024-06-14 12:02:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:02:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:02:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-14 12:02:59,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 12:02:59,567 INFO L175 Difference]: Start difference. First operand has 555 places, 483 transitions, 5809 flow. Second operand 12 states and 160 transitions. [2024-06-14 12:02:59,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 506 transitions, 7471 flow [2024-06-14 12:03:02,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 506 transitions, 7268 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-14 12:03:02,994 INFO L231 Difference]: Finished difference. Result has 557 places, 485 transitions, 5982 flow [2024-06-14 12:03:02,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5606, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5982, PETRI_PLACES=557, PETRI_TRANSITIONS=485} [2024-06-14 12:03:02,995 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 525 predicate places. [2024-06-14 12:03:02,995 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 485 transitions, 5982 flow [2024-06-14 12:03:02,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:02,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:02,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:02,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 12:03:02,996 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:02,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1299705204, now seen corresponding path program 7 times [2024-06-14 12:03:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888609179] [2024-06-14 12:03:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:04,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:04,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888609179] [2024-06-14 12:03:04,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888609179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:04,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:04,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:04,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007037143] [2024-06-14 12:03:04,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:04,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:04,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:04,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:03:04,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 485 transitions, 5982 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:04,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:04,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:03:04,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:05,192 INFO L124 PetriNetUnfolderBase]: 962/1818 cut-off events. [2024-06-14 12:03:05,193 INFO L125 PetriNetUnfolderBase]: For 792336/792336 co-relation queries the response was YES. [2024-06-14 12:03:05,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18491 conditions, 1818 events. 962/1818 cut-off events. For 792336/792336 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11408 event pairs, 72 based on Foata normal form. 2/1818 useless extension candidates. Maximal degree in co-relation 18237. Up to 1415 conditions per place. [2024-06-14 12:03:05,227 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 378 selfloop transitions, 124 changer transitions 0/505 dead transitions. [2024-06-14 12:03:05,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 505 transitions, 7558 flow [2024-06-14 12:03:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-14 12:03:05,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:03:05,228 INFO L175 Difference]: Start difference. First operand has 557 places, 485 transitions, 5982 flow. Second operand 12 states and 156 transitions. [2024-06-14 12:03:05,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 505 transitions, 7558 flow [2024-06-14 12:03:09,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 505 transitions, 7258 flow, removed 55 selfloop flow, removed 10 redundant places. [2024-06-14 12:03:09,084 INFO L231 Difference]: Finished difference. Result has 559 places, 489 transitions, 6076 flow [2024-06-14 12:03:09,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5712, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6076, PETRI_PLACES=559, PETRI_TRANSITIONS=489} [2024-06-14 12:03:09,084 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 527 predicate places. [2024-06-14 12:03:09,084 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 489 transitions, 6076 flow [2024-06-14 12:03:09,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:09,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:09,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:09,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 12:03:09,085 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:09,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash -525414164, now seen corresponding path program 8 times [2024-06-14 12:03:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:09,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068445052] [2024-06-14 12:03:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:09,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068445052] [2024-06-14 12:03:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068445052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:10,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:10,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:10,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874217329] [2024-06-14 12:03:10,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:10,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:10,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:10,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:03:10,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 489 transitions, 6076 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:10,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:10,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:03:10,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:11,521 INFO L124 PetriNetUnfolderBase]: 973/1841 cut-off events. [2024-06-14 12:03:11,521 INFO L125 PetriNetUnfolderBase]: For 837827/837827 co-relation queries the response was YES. [2024-06-14 12:03:11,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19042 conditions, 1841 events. 973/1841 cut-off events. For 837827/837827 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 11573 event pairs, 71 based on Foata normal form. 2/1841 useless extension candidates. Maximal degree in co-relation 18789. Up to 1413 conditions per place. [2024-06-14 12:03:11,554 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 390 selfloop transitions, 113 changer transitions 0/506 dead transitions. [2024-06-14 12:03:11,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 506 transitions, 7610 flow [2024-06-14 12:03:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:03:11,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 12:03:11,555 INFO L175 Difference]: Start difference. First operand has 559 places, 489 transitions, 6076 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:03:11,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 506 transitions, 7610 flow [2024-06-14 12:03:15,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 506 transitions, 7384 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:03:15,338 INFO L231 Difference]: Finished difference. Result has 562 places, 491 transitions, 6180 flow [2024-06-14 12:03:15,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5850, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6180, PETRI_PLACES=562, PETRI_TRANSITIONS=491} [2024-06-14 12:03:15,339 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 530 predicate places. [2024-06-14 12:03:15,339 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 491 transitions, 6180 flow [2024-06-14 12:03:15,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:15,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:15,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:15,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 12:03:15,339 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:15,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:15,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1534621010, now seen corresponding path program 9 times [2024-06-14 12:03:15,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:15,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222543077] [2024-06-14 12:03:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:15,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:16,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:16,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222543077] [2024-06-14 12:03:16,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222543077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:16,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:16,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:16,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719915804] [2024-06-14 12:03:16,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:16,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:16,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:16,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:16,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:03:16,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 491 transitions, 6180 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:16,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:16,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:03:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:17,677 INFO L124 PetriNetUnfolderBase]: 977/1847 cut-off events. [2024-06-14 12:03:17,677 INFO L125 PetriNetUnfolderBase]: For 846500/846500 co-relation queries the response was YES. [2024-06-14 12:03:17,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19233 conditions, 1847 events. 977/1847 cut-off events. For 846500/846500 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 11633 event pairs, 75 based on Foata normal form. 2/1847 useless extension candidates. Maximal degree in co-relation 18979. Up to 1581 conditions per place. [2024-06-14 12:03:17,711 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 433 selfloop transitions, 70 changer transitions 0/506 dead transitions. [2024-06-14 12:03:17,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 506 transitions, 7268 flow [2024-06-14 12:03:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:03:17,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:03:17,712 INFO L175 Difference]: Start difference. First operand has 562 places, 491 transitions, 6180 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:03:17,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 506 transitions, 7268 flow [2024-06-14 12:03:21,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 506 transitions, 7064 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-14 12:03:21,702 INFO L231 Difference]: Finished difference. Result has 566 places, 492 transitions, 6172 flow [2024-06-14 12:03:21,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5978, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6172, PETRI_PLACES=566, PETRI_TRANSITIONS=492} [2024-06-14 12:03:21,703 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 534 predicate places. [2024-06-14 12:03:21,703 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 492 transitions, 6172 flow [2024-06-14 12:03:21,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:21,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:21,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:21,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 12:03:21,703 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:21,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash -516486164, now seen corresponding path program 10 times [2024-06-14 12:03:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:21,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980929821] [2024-06-14 12:03:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:21,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:23,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980929821] [2024-06-14 12:03:23,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980929821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:23,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:23,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:23,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342852716] [2024-06-14 12:03:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:23,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:03:23,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 492 transitions, 6172 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:23,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:23,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:03:23,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:24,088 INFO L124 PetriNetUnfolderBase]: 974/1844 cut-off events. [2024-06-14 12:03:24,088 INFO L125 PetriNetUnfolderBase]: For 805040/805040 co-relation queries the response was YES. [2024-06-14 12:03:24,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18744 conditions, 1844 events. 974/1844 cut-off events. For 805040/805040 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 11631 event pairs, 74 based on Foata normal form. 2/1844 useless extension candidates. Maximal degree in co-relation 18489. Up to 1456 conditions per place. [2024-06-14 12:03:24,121 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 380 selfloop transitions, 123 changer transitions 0/506 dead transitions. [2024-06-14 12:03:24,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 506 transitions, 7210 flow [2024-06-14 12:03:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:03:24,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:03:24,122 INFO L175 Difference]: Start difference. First operand has 566 places, 492 transitions, 6172 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:03:24,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 506 transitions, 7210 flow [2024-06-14 12:03:27,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 506 transitions, 6982 flow, removed 42 selfloop flow, removed 11 redundant places. [2024-06-14 12:03:27,894 INFO L231 Difference]: Finished difference. Result has 567 places, 492 transitions, 6194 flow [2024-06-14 12:03:27,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5944, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6194, PETRI_PLACES=567, PETRI_TRANSITIONS=492} [2024-06-14 12:03:27,894 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 535 predicate places. [2024-06-14 12:03:27,894 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 492 transitions, 6194 flow [2024-06-14 12:03:27,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:27,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:27,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:27,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 12:03:27,894 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:27,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash -516486443, now seen corresponding path program 14 times [2024-06-14 12:03:27,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:27,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728145937] [2024-06-14 12:03:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:27,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:29,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:29,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728145937] [2024-06-14 12:03:29,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728145937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:29,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:29,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:03:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723430530] [2024-06-14 12:03:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:29,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:03:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:29,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:03:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:03:29,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:03:29,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 492 transitions, 6194 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:29,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:29,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:03:29,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:30,082 INFO L124 PetriNetUnfolderBase]: 982/1855 cut-off events. [2024-06-14 12:03:30,082 INFO L125 PetriNetUnfolderBase]: For 812115/812115 co-relation queries the response was YES. [2024-06-14 12:03:30,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19114 conditions, 1855 events. 982/1855 cut-off events. For 812115/812115 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 11666 event pairs, 74 based on Foata normal form. 1/1854 useless extension candidates. Maximal degree in co-relation 18859. Up to 1328 conditions per place. [2024-06-14 12:03:30,115 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 356 selfloop transitions, 151 changer transitions 0/510 dead transitions. [2024-06-14 12:03:30,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 510 transitions, 8184 flow [2024-06-14 12:03:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:03:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:03:30,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:03:30,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-14 12:03:30,116 INFO L175 Difference]: Start difference. First operand has 567 places, 492 transitions, 6194 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:03:30,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 510 transitions, 8184 flow [2024-06-14 12:03:34,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 510 transitions, 7920 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:03:34,222 INFO L231 Difference]: Finished difference. Result has 566 places, 496 transitions, 6381 flow [2024-06-14 12:03:34,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5930, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6381, PETRI_PLACES=566, PETRI_TRANSITIONS=496} [2024-06-14 12:03:34,222 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 534 predicate places. [2024-06-14 12:03:34,222 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 496 transitions, 6381 flow [2024-06-14 12:03:34,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:34,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:34,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:34,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 12:03:34,223 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:34,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:34,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2132446320, now seen corresponding path program 11 times [2024-06-14 12:03:34,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:34,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981252080] [2024-06-14 12:03:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:34,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:35,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:35,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981252080] [2024-06-14 12:03:35,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981252080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:35,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:35,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:35,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199673289] [2024-06-14 12:03:35,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:35,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:35,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:35,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:35,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:03:35,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 496 transitions, 6381 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:35,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:35,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:03:35,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:36,680 INFO L124 PetriNetUnfolderBase]: 989/1868 cut-off events. [2024-06-14 12:03:36,680 INFO L125 PetriNetUnfolderBase]: For 841744/841744 co-relation queries the response was YES. [2024-06-14 12:03:36,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19340 conditions, 1868 events. 989/1868 cut-off events. For 841744/841744 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 11805 event pairs, 74 based on Foata normal form. 2/1868 useless extension candidates. Maximal degree in co-relation 19086. Up to 1543 conditions per place. [2024-06-14 12:03:36,713 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 418 selfloop transitions, 92 changer transitions 0/513 dead transitions. [2024-06-14 12:03:36,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 513 transitions, 7504 flow [2024-06-14 12:03:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:03:36,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 12:03:36,714 INFO L175 Difference]: Start difference. First operand has 566 places, 496 transitions, 6381 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:03:36,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 513 transitions, 7504 flow [2024-06-14 12:03:40,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 513 transitions, 7083 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-14 12:03:40,893 INFO L231 Difference]: Finished difference. Result has 570 places, 499 transitions, 6228 flow [2024-06-14 12:03:40,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5962, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6228, PETRI_PLACES=570, PETRI_TRANSITIONS=499} [2024-06-14 12:03:40,894 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 538 predicate places. [2024-06-14 12:03:40,894 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 499 transitions, 6228 flow [2024-06-14 12:03:40,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:40,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:40,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:40,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 12:03:40,895 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:40,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash 742807779, now seen corresponding path program 15 times [2024-06-14 12:03:40,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:40,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832609314] [2024-06-14 12:03:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:42,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:42,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832609314] [2024-06-14 12:03:42,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832609314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:42,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:42,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297577505] [2024-06-14 12:03:42,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:42,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:42,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:42,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:42,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:42,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:03:42,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 499 transitions, 6228 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:42,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:42,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:03:42,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:43,809 INFO L124 PetriNetUnfolderBase]: 995/1882 cut-off events. [2024-06-14 12:03:43,809 INFO L125 PetriNetUnfolderBase]: For 841291/841291 co-relation queries the response was YES. [2024-06-14 12:03:43,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19337 conditions, 1882 events. 995/1882 cut-off events. For 841291/841291 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 11898 event pairs, 74 based on Foata normal form. 2/1882 useless extension candidates. Maximal degree in co-relation 19082. Up to 1627 conditions per place. [2024-06-14 12:03:43,843 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 450 selfloop transitions, 63 changer transitions 0/516 dead transitions. [2024-06-14 12:03:43,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 516 transitions, 7444 flow [2024-06-14 12:03:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:43,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:03:43,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 12:03:43,844 INFO L175 Difference]: Start difference. First operand has 570 places, 499 transitions, 6228 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:03:43,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 516 transitions, 7444 flow [2024-06-14 12:03:48,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 516 transitions, 7227 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:03:48,026 INFO L231 Difference]: Finished difference. Result has 574 places, 503 transitions, 6314 flow [2024-06-14 12:03:48,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6011, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6314, PETRI_PLACES=574, PETRI_TRANSITIONS=503} [2024-06-14 12:03:48,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 542 predicate places. [2024-06-14 12:03:48,026 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 503 transitions, 6314 flow [2024-06-14 12:03:48,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:48,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:48,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:48,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 12:03:48,027 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:48,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1913170306, now seen corresponding path program 12 times [2024-06-14 12:03:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:48,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699163970] [2024-06-14 12:03:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:48,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699163970] [2024-06-14 12:03:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699163970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:49,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:49,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:49,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921124189] [2024-06-14 12:03:49,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:49,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:49,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:49,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:03:49,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 503 transitions, 6314 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:49,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:49,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:03:49,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:50,495 INFO L124 PetriNetUnfolderBase]: 999/1890 cut-off events. [2024-06-14 12:03:50,495 INFO L125 PetriNetUnfolderBase]: For 858521/858521 co-relation queries the response was YES. [2024-06-14 12:03:50,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19415 conditions, 1890 events. 999/1890 cut-off events. For 858521/858521 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 11967 event pairs, 74 based on Foata normal form. 2/1890 useless extension candidates. Maximal degree in co-relation 19158. Up to 1561 conditions per place. [2024-06-14 12:03:50,524 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 431 selfloop transitions, 84 changer transitions 0/518 dead transitions. [2024-06-14 12:03:50,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 518 transitions, 7426 flow [2024-06-14 12:03:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:50,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:03:50,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:03:50,526 INFO L175 Difference]: Start difference. First operand has 574 places, 503 transitions, 6314 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:03:50,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 518 transitions, 7426 flow [2024-06-14 12:03:54,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 518 transitions, 7210 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-14 12:03:54,387 INFO L231 Difference]: Finished difference. Result has 577 places, 504 transitions, 6322 flow [2024-06-14 12:03:54,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6098, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6322, PETRI_PLACES=577, PETRI_TRANSITIONS=504} [2024-06-14 12:03:54,387 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 545 predicate places. [2024-06-14 12:03:54,387 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 504 transitions, 6322 flow [2024-06-14 12:03:54,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:54,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:03:54,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:03:54,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 12:03:54,388 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:03:54,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:03:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2132454039, now seen corresponding path program 16 times [2024-06-14 12:03:54,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:03:54,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538157870] [2024-06-14 12:03:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:03:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:03:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:03:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:03:56,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:03:56,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538157870] [2024-06-14 12:03:56,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538157870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:03:56,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:03:56,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:03:56,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261373422] [2024-06-14 12:03:56,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:03:56,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:03:56,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:03:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:03:56,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:03:56,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:03:56,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 504 transitions, 6322 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:03:56,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:03:56,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:03:56,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:03:57,220 INFO L124 PetriNetUnfolderBase]: 997/1889 cut-off events. [2024-06-14 12:03:57,220 INFO L125 PetriNetUnfolderBase]: For 815667/815667 co-relation queries the response was YES. [2024-06-14 12:03:57,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19183 conditions, 1889 events. 997/1889 cut-off events. For 815667/815667 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 11994 event pairs, 74 based on Foata normal form. 1/1888 useless extension candidates. Maximal degree in co-relation 18925. Up to 1498 conditions per place. [2024-06-14 12:03:57,255 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 394 selfloop transitions, 120 changer transitions 0/517 dead transitions. [2024-06-14 12:03:57,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 517 transitions, 7380 flow [2024-06-14 12:03:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:03:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:03:57,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:03:57,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 12:03:57,261 INFO L175 Difference]: Start difference. First operand has 577 places, 504 transitions, 6322 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:03:57,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 517 transitions, 7380 flow [2024-06-14 12:04:01,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 517 transitions, 7118 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-14 12:04:01,204 INFO L231 Difference]: Finished difference. Result has 579 places, 504 transitions, 6305 flow [2024-06-14 12:04:01,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6305, PETRI_PLACES=579, PETRI_TRANSITIONS=504} [2024-06-14 12:04:01,204 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 547 predicate places. [2024-06-14 12:04:01,204 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 504 transitions, 6305 flow [2024-06-14 12:04:01,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:01,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:01,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:01,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 12:04:01,205 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:01,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:01,206 INFO L85 PathProgramCache]: Analyzing trace with hash -774774413, now seen corresponding path program 17 times [2024-06-14 12:04:01,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:01,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957832345] [2024-06-14 12:04:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:01,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:02,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:02,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957832345] [2024-06-14 12:04:02,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957832345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:02,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:02,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:02,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677129655] [2024-06-14 12:04:02,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:02,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:02,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:02,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:02,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 504 transitions, 6305 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:02,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:02,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:02,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:03,675 INFO L124 PetriNetUnfolderBase]: 1000/1892 cut-off events. [2024-06-14 12:04:03,676 INFO L125 PetriNetUnfolderBase]: For 822591/822591 co-relation queries the response was YES. [2024-06-14 12:04:03,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19226 conditions, 1892 events. 1000/1892 cut-off events. For 822591/822591 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 12004 event pairs, 74 based on Foata normal form. 1/1891 useless extension candidates. Maximal degree in co-relation 18967. Up to 1449 conditions per place. [2024-06-14 12:04:03,713 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 399 selfloop transitions, 119 changer transitions 0/521 dead transitions. [2024-06-14 12:04:03,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 521 transitions, 7853 flow [2024-06-14 12:04:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-14 12:04:03,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-14 12:04:03,714 INFO L175 Difference]: Start difference. First operand has 579 places, 504 transitions, 6305 flow. Second operand 12 states and 157 transitions. [2024-06-14 12:04:03,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 521 transitions, 7853 flow [2024-06-14 12:04:07,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 521 transitions, 7599 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:04:07,714 INFO L231 Difference]: Finished difference. Result has 580 places, 506 transitions, 6360 flow [2024-06-14 12:04:07,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6051, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6360, PETRI_PLACES=580, PETRI_TRANSITIONS=506} [2024-06-14 12:04:07,714 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 548 predicate places. [2024-06-14 12:04:07,715 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 506 transitions, 6360 flow [2024-06-14 12:04:07,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:07,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:07,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:07,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 12:04:07,715 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:07,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:07,715 INFO L85 PathProgramCache]: Analyzing trace with hash 936747189, now seen corresponding path program 18 times [2024-06-14 12:04:07,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:07,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503023270] [2024-06-14 12:04:07,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:07,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:09,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:09,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503023270] [2024-06-14 12:04:09,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503023270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:09,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:09,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:09,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374339856] [2024-06-14 12:04:09,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:09,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:09,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:09,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:09,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:09,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:09,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 506 transitions, 6360 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:09,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:09,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:09,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:10,824 INFO L124 PetriNetUnfolderBase]: 1003/1899 cut-off events. [2024-06-14 12:04:10,824 INFO L125 PetriNetUnfolderBase]: For 831277/831277 co-relation queries the response was YES. [2024-06-14 12:04:10,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19352 conditions, 1899 events. 1003/1899 cut-off events. For 831277/831277 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 12080 event pairs, 76 based on Foata normal form. 1/1898 useless extension candidates. Maximal degree in co-relation 19092. Up to 1606 conditions per place. [2024-06-14 12:04:10,858 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 452 selfloop transitions, 67 changer transitions 0/522 dead transitions. [2024-06-14 12:04:10,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 522 transitions, 7516 flow [2024-06-14 12:04:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:04:10,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:04:10,859 INFO L175 Difference]: Start difference. First operand has 580 places, 506 transitions, 6360 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:04:10,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 522 transitions, 7516 flow [2024-06-14 12:04:15,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 522 transitions, 7237 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-14 12:04:15,264 INFO L231 Difference]: Finished difference. Result has 583 places, 508 transitions, 6308 flow [2024-06-14 12:04:15,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6081, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6308, PETRI_PLACES=583, PETRI_TRANSITIONS=508} [2024-06-14 12:04:15,265 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 551 predicate places. [2024-06-14 12:04:15,265 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 508 transitions, 6308 flow [2024-06-14 12:04:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:15,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:15,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:15,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 12:04:15,265 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:15,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash -775041323, now seen corresponding path program 19 times [2024-06-14 12:04:15,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:15,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318857610] [2024-06-14 12:04:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:15,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:17,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:17,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318857610] [2024-06-14 12:04:17,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318857610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:17,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:17,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:17,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798268223] [2024-06-14 12:04:17,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:17,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:17,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:17,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:17,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:17,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:17,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 508 transitions, 6308 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:17,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:17,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:17,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:18,094 INFO L124 PetriNetUnfolderBase]: 1004/1903 cut-off events. [2024-06-14 12:04:18,094 INFO L125 PetriNetUnfolderBase]: For 839287/839287 co-relation queries the response was YES. [2024-06-14 12:04:18,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19074 conditions, 1903 events. 1004/1903 cut-off events. For 839287/839287 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12152 event pairs, 74 based on Foata normal form. 2/1903 useless extension candidates. Maximal degree in co-relation 18813. Up to 1362 conditions per place. [2024-06-14 12:04:18,131 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 374 selfloop transitions, 148 changer transitions 0/525 dead transitions. [2024-06-14 12:04:18,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 525 transitions, 8280 flow [2024-06-14 12:04:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-14 12:04:18,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-14 12:04:18,132 INFO L175 Difference]: Start difference. First operand has 583 places, 508 transitions, 6308 flow. Second operand 12 states and 161 transitions. [2024-06-14 12:04:18,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 525 transitions, 8280 flow [2024-06-14 12:04:22,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 525 transitions, 7977 flow, removed 86 selfloop flow, removed 10 redundant places. [2024-06-14 12:04:22,395 INFO L231 Difference]: Finished difference. Result has 586 places, 510 transitions, 6383 flow [2024-06-14 12:04:22,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6055, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6383, PETRI_PLACES=586, PETRI_TRANSITIONS=510} [2024-06-14 12:04:22,396 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 554 predicate places. [2024-06-14 12:04:22,396 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 510 transitions, 6383 flow [2024-06-14 12:04:22,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:22,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:22,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:22,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 12:04:22,396 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:22,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash -863947888, now seen corresponding path program 13 times [2024-06-14 12:04:22,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:22,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932070454] [2024-06-14 12:04:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:23,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:23,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932070454] [2024-06-14 12:04:23,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932070454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:23,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:23,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:23,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746573833] [2024-06-14 12:04:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:23,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:24,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:24,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 510 transitions, 6383 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:24,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:24,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:24,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:24,823 INFO L124 PetriNetUnfolderBase]: 995/1888 cut-off events. [2024-06-14 12:04:24,823 INFO L125 PetriNetUnfolderBase]: For 855626/855626 co-relation queries the response was YES. [2024-06-14 12:04:24,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17043 conditions, 1888 events. 995/1888 cut-off events. For 855626/855626 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 12064 event pairs, 65 based on Foata normal form. 12/1898 useless extension candidates. Maximal degree in co-relation 16780. Up to 1599 conditions per place. [2024-06-14 12:04:24,855 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 467 selfloop transitions, 51 changer transitions 7/528 dead transitions. [2024-06-14 12:04:24,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 528 transitions, 7623 flow [2024-06-14 12:04:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:04:24,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:04:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:04:24,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 12:04:24,856 INFO L175 Difference]: Start difference. First operand has 586 places, 510 transitions, 6383 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:04:24,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 528 transitions, 7623 flow [2024-06-14 12:04:28,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 528 transitions, 7294 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:04:28,154 INFO L231 Difference]: Finished difference. Result has 585 places, 508 transitions, 6166 flow [2024-06-14 12:04:28,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6166, PETRI_PLACES=585, PETRI_TRANSITIONS=508} [2024-06-14 12:04:28,154 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 553 predicate places. [2024-06-14 12:04:28,155 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 508 transitions, 6166 flow [2024-06-14 12:04:28,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:28,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:28,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:28,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-14 12:04:28,155 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:28,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1534880759, now seen corresponding path program 20 times [2024-06-14 12:04:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:28,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650570742] [2024-06-14 12:04:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:29,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:29,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650570742] [2024-06-14 12:04:29,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650570742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:29,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:29,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:04:29,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733015016] [2024-06-14 12:04:29,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:29,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:04:29,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:29,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:04:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:04:29,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:29,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 508 transitions, 6166 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:29,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:29,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:29,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:30,290 INFO L124 PetriNetUnfolderBase]: 979/1855 cut-off events. [2024-06-14 12:04:30,291 INFO L125 PetriNetUnfolderBase]: For 636039/636039 co-relation queries the response was YES. [2024-06-14 12:04:30,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16877 conditions, 1855 events. 979/1855 cut-off events. For 636039/636039 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 11860 event pairs, 61 based on Foata normal form. 1/1854 useless extension candidates. Maximal degree in co-relation 16615. Up to 1542 conditions per place. [2024-06-14 12:04:30,325 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 440 selfloop transitions, 83 changer transitions 0/526 dead transitions. [2024-06-14 12:04:30,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 526 transitions, 8252 flow [2024-06-14 12:04:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:04:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:04:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:04:30,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-14 12:04:30,326 INFO L175 Difference]: Start difference. First operand has 585 places, 508 transitions, 6166 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:04:30,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 526 transitions, 8252 flow [2024-06-14 12:04:33,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 526 transitions, 8100 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 12:04:33,234 INFO L231 Difference]: Finished difference. Result has 587 places, 512 transitions, 6365 flow [2024-06-14 12:04:33,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6014, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6365, PETRI_PLACES=587, PETRI_TRANSITIONS=512} [2024-06-14 12:04:33,235 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 555 predicate places. [2024-06-14 12:04:33,235 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 512 transitions, 6365 flow [2024-06-14 12:04:33,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:33,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:33,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:33,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-14 12:04:33,236 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:33,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1534880480, now seen corresponding path program 14 times [2024-06-14 12:04:33,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:33,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425575619] [2024-06-14 12:04:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:34,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:34,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425575619] [2024-06-14 12:04:34,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425575619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:34,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:34,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:34,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307244004] [2024-06-14 12:04:34,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:34,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:34,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:34,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:34,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:35,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:35,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 512 transitions, 6365 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:35,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:35,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:35,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:35,849 INFO L124 PetriNetUnfolderBase]: 983/1863 cut-off events. [2024-06-14 12:04:35,850 INFO L125 PetriNetUnfolderBase]: For 663560/663560 co-relation queries the response was YES. [2024-06-14 12:04:35,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16986 conditions, 1863 events. 983/1863 cut-off events. For 663560/663560 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 11939 event pairs, 63 based on Foata normal form. 2/1863 useless extension candidates. Maximal degree in co-relation 16723. Up to 1587 conditions per place. [2024-06-14 12:04:35,883 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 458 selfloop transitions, 65 changer transitions 0/526 dead transitions. [2024-06-14 12:04:35,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 526 transitions, 7491 flow [2024-06-14 12:04:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:04:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:04:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:04:35,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-14 12:04:35,884 INFO L175 Difference]: Start difference. First operand has 587 places, 512 transitions, 6365 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:04:35,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 526 transitions, 7491 flow [2024-06-14 12:04:39,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 526 transitions, 7036 flow, removed 46 selfloop flow, removed 11 redundant places. [2024-06-14 12:04:39,198 INFO L231 Difference]: Finished difference. Result has 587 places, 513 transitions, 6098 flow [2024-06-14 12:04:39,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5910, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6098, PETRI_PLACES=587, PETRI_TRANSITIONS=513} [2024-06-14 12:04:39,199 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 555 predicate places. [2024-06-14 12:04:39,199 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 513 transitions, 6098 flow [2024-06-14 12:04:39,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:39,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:39,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:39,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-14 12:04:39,199 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:39,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1534888199, now seen corresponding path program 21 times [2024-06-14 12:04:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:39,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33467432] [2024-06-14 12:04:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:40,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:40,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33467432] [2024-06-14 12:04:40,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33467432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:40,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012864686] [2024-06-14 12:04:40,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:40,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:41,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:41,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 513 transitions, 6098 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:41,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:41,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:41,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:41,773 INFO L124 PetriNetUnfolderBase]: 981/1860 cut-off events. [2024-06-14 12:04:41,774 INFO L125 PetriNetUnfolderBase]: For 618016/618016 co-relation queries the response was YES. [2024-06-14 12:04:41,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16459 conditions, 1860 events. 981/1860 cut-off events. For 618016/618016 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 11888 event pairs, 63 based on Foata normal form. 1/1859 useless extension candidates. Maximal degree in co-relation 16197. Up to 1587 conditions per place. [2024-06-14 12:04:41,807 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 454 selfloop transitions, 69 changer transitions 0/526 dead transitions. [2024-06-14 12:04:41,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 526 transitions, 7174 flow [2024-06-14 12:04:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:04:41,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 12:04:41,808 INFO L175 Difference]: Start difference. First operand has 587 places, 513 transitions, 6098 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:04:41,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 526 transitions, 7174 flow [2024-06-14 12:04:44,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 526 transitions, 6938 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-14 12:04:44,674 INFO L231 Difference]: Finished difference. Result has 590 places, 513 transitions, 6005 flow [2024-06-14 12:04:44,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5862, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6005, PETRI_PLACES=590, PETRI_TRANSITIONS=513} [2024-06-14 12:04:44,674 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 558 predicate places. [2024-06-14 12:04:44,674 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 513 transitions, 6005 flow [2024-06-14 12:04:44,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:44,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:44,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:44,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-14 12:04:44,675 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:44,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1534611710, now seen corresponding path program 15 times [2024-06-14 12:04:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:44,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91548738] [2024-06-14 12:04:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:44,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:46,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:46,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91548738] [2024-06-14 12:04:46,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91548738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:46,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:46,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:46,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108372840] [2024-06-14 12:04:46,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:46,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:46,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:46,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:46,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 513 transitions, 6005 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:46,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:46,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:46,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:47,032 INFO L124 PetriNetUnfolderBase]: 992/1881 cut-off events. [2024-06-14 12:04:47,032 INFO L125 PetriNetUnfolderBase]: For 683911/683911 co-relation queries the response was YES. [2024-06-14 12:04:47,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17016 conditions, 1881 events. 992/1881 cut-off events. For 683911/683911 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12092 event pairs, 64 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 16753. Up to 1576 conditions per place. [2024-06-14 12:04:47,068 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 457 selfloop transitions, 71 changer transitions 0/531 dead transitions. [2024-06-14 12:04:47,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 531 transitions, 7615 flow [2024-06-14 12:04:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:04:47,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:04:47,070 INFO L175 Difference]: Start difference. First operand has 590 places, 513 transitions, 6005 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:04:47,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 531 transitions, 7615 flow [2024-06-14 12:04:50,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 531 transitions, 7466 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:04:50,596 INFO L231 Difference]: Finished difference. Result has 591 places, 515 transitions, 6104 flow [2024-06-14 12:04:50,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5856, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6104, PETRI_PLACES=591, PETRI_TRANSITIONS=515} [2024-06-14 12:04:50,596 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 559 predicate places. [2024-06-14 12:04:50,597 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 515 transitions, 6104 flow [2024-06-14 12:04:50,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:50,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:50,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:50,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-14 12:04:50,597 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:50,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:50,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1041417234, now seen corresponding path program 16 times [2024-06-14 12:04:50,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:50,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272655340] [2024-06-14 12:04:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:50,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:52,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:52,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272655340] [2024-06-14 12:04:52,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272655340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:52,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:52,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:52,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107696143] [2024-06-14 12:04:52,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:52,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:52,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:52,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:52,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:52,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 515 transitions, 6104 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:52,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:52,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:52,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:53,214 INFO L124 PetriNetUnfolderBase]: 996/1889 cut-off events. [2024-06-14 12:04:53,214 INFO L125 PetriNetUnfolderBase]: For 691933/691933 co-relation queries the response was YES. [2024-06-14 12:04:53,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17182 conditions, 1889 events. 996/1889 cut-off events. For 691933/691933 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 12124 event pairs, 64 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 16918. Up to 1496 conditions per place. [2024-06-14 12:04:53,249 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 438 selfloop transitions, 92 changer transitions 0/533 dead transitions. [2024-06-14 12:04:53,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 533 transitions, 7676 flow [2024-06-14 12:04:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:04:53,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-14 12:04:53,250 INFO L175 Difference]: Start difference. First operand has 591 places, 515 transitions, 6104 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:04:53,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 533 transitions, 7676 flow [2024-06-14 12:04:56,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 533 transitions, 7537 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 12:04:56,600 INFO L231 Difference]: Finished difference. Result has 595 places, 516 transitions, 6205 flow [2024-06-14 12:04:56,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5965, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6205, PETRI_PLACES=595, PETRI_TRANSITIONS=516} [2024-06-14 12:04:56,601 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 563 predicate places. [2024-06-14 12:04:56,601 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 516 transitions, 6205 flow [2024-06-14 12:04:56,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:56,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:04:56,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:04:56,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-14 12:04:56,602 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:04:56,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:04:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1542030599, now seen corresponding path program 22 times [2024-06-14 12:04:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:04:56,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875677379] [2024-06-14 12:04:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:04:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:04:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:04:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:04:58,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:04:58,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875677379] [2024-06-14 12:04:58,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875677379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:04:58,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:04:58,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:04:58,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579299650] [2024-06-14 12:04:58,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:04:58,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:04:58,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:04:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:04:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:04:58,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:04:58,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 516 transitions, 6205 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:04:58,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:04:58,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:04:58,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:04:59,509 INFO L124 PetriNetUnfolderBase]: 994/1886 cut-off events. [2024-06-14 12:04:59,509 INFO L125 PetriNetUnfolderBase]: For 652980/652980 co-relation queries the response was YES. [2024-06-14 12:04:59,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17004 conditions, 1886 events. 994/1886 cut-off events. For 652980/652980 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 12152 event pairs, 66 based on Foata normal form. 1/1885 useless extension candidates. Maximal degree in co-relation 16738. Up to 1583 conditions per place. [2024-06-14 12:04:59,545 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 456 selfloop transitions, 71 changer transitions 0/530 dead transitions. [2024-06-14 12:04:59,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 530 transitions, 7293 flow [2024-06-14 12:04:59,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:04:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:04:59,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:04:59,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:04:59,545 INFO L175 Difference]: Start difference. First operand has 595 places, 516 transitions, 6205 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:04:59,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 530 transitions, 7293 flow [2024-06-14 12:05:03,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 530 transitions, 6842 flow, removed 49 selfloop flow, removed 13 redundant places. [2024-06-14 12:05:03,182 INFO L231 Difference]: Finished difference. Result has 594 places, 516 transitions, 5901 flow [2024-06-14 12:05:03,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5754, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5901, PETRI_PLACES=594, PETRI_TRANSITIONS=516} [2024-06-14 12:05:03,182 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 562 predicate places. [2024-06-14 12:05:03,182 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 516 transitions, 5901 flow [2024-06-14 12:05:03,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:03,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:03,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:03,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-14 12:05:03,183 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:03,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:03,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1542030320, now seen corresponding path program 17 times [2024-06-14 12:05:03,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:03,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352326475] [2024-06-14 12:05:03,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:03,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352326475] [2024-06-14 12:05:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352326475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:04,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:04,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:05:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178390652] [2024-06-14 12:05:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:04,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:05:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:05:04,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:05:04,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:04,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 516 transitions, 5901 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:04,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:04,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:04,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:05,612 INFO L124 PetriNetUnfolderBase]: 991/1881 cut-off events. [2024-06-14 12:05:05,612 INFO L125 PetriNetUnfolderBase]: For 634431/634431 co-relation queries the response was YES. [2024-06-14 12:05:05,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16000 conditions, 1881 events. 991/1881 cut-off events. For 634431/634431 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 12107 event pairs, 65 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 15736. Up to 1611 conditions per place. [2024-06-14 12:05:05,648 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 463 selfloop transitions, 63 changer transitions 0/529 dead transitions. [2024-06-14 12:05:05,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 529 transitions, 6983 flow [2024-06-14 12:05:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:05:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:05:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:05:05,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:05:05,649 INFO L175 Difference]: Start difference. First operand has 594 places, 516 transitions, 5901 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:05:05,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 529 transitions, 6983 flow [2024-06-14 12:05:08,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 529 transitions, 6725 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-14 12:05:08,612 INFO L231 Difference]: Finished difference. Result has 594 places, 516 transitions, 5773 flow [2024-06-14 12:05:08,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5643, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5773, PETRI_PLACES=594, PETRI_TRANSITIONS=516} [2024-06-14 12:05:08,612 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 562 predicate places. [2024-06-14 12:05:08,612 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 516 transitions, 5773 flow [2024-06-14 12:05:08,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:08,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:08,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:08,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-14 12:05:08,612 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:08,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:08,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1041407934, now seen corresponding path program 18 times [2024-06-14 12:05:08,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:08,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737275163] [2024-06-14 12:05:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:08,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:10,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737275163] [2024-06-14 12:05:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737275163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:10,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:10,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:05:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604422584] [2024-06-14 12:05:10,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:10,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:05:10,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:05:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:05:10,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:10,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 516 transitions, 5773 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:10,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:10,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:10,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:11,184 INFO L124 PetriNetUnfolderBase]: 995/1889 cut-off events. [2024-06-14 12:05:11,185 INFO L125 PetriNetUnfolderBase]: For 640192/640192 co-relation queries the response was YES. [2024-06-14 12:05:11,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15939 conditions, 1889 events. 995/1889 cut-off events. For 640192/640192 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 12189 event pairs, 65 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 15675. Up to 1521 conditions per place. [2024-06-14 12:05:11,221 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 439 selfloop transitions, 90 changer transitions 0/532 dead transitions. [2024-06-14 12:05:11,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 532 transitions, 6913 flow [2024-06-14 12:05:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:05:11,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:05:11,222 INFO L175 Difference]: Start difference. First operand has 594 places, 516 transitions, 5773 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:05:11,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 532 transitions, 6913 flow [2024-06-14 12:05:14,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 532 transitions, 6775 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:05:14,426 INFO L231 Difference]: Finished difference. Result has 596 places, 517 transitions, 5867 flow [2024-06-14 12:05:14,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5635, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5867, PETRI_PLACES=596, PETRI_TRANSITIONS=517} [2024-06-14 12:05:14,427 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 564 predicate places. [2024-06-14 12:05:14,427 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 517 transitions, 5867 flow [2024-06-14 12:05:14,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:14,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:14,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:14,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-14 12:05:14,427 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:14,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1033789095, now seen corresponding path program 23 times [2024-06-14 12:05:14,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:14,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593641996] [2024-06-14 12:05:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:16,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:16,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593641996] [2024-06-14 12:05:16,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593641996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:16,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:16,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:05:16,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022811538] [2024-06-14 12:05:16,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:16,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:05:16,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:16,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:05:16,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:05:16,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:16,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 517 transitions, 5867 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:16,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:16,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:16,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:17,774 INFO L124 PetriNetUnfolderBase]: 998/1894 cut-off events. [2024-06-14 12:05:17,774 INFO L125 PetriNetUnfolderBase]: For 623620/623620 co-relation queries the response was YES. [2024-06-14 12:05:17,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16083 conditions, 1894 events. 998/1894 cut-off events. For 623620/623620 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 12218 event pairs, 65 based on Foata normal form. 1/1893 useless extension candidates. Maximal degree in co-relation 15818. Up to 1502 conditions per place. [2024-06-14 12:05:17,808 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 420 selfloop transitions, 109 changer transitions 0/532 dead transitions. [2024-06-14 12:05:17,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 532 transitions, 7019 flow [2024-06-14 12:05:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:17,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:05:17,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:05:17,809 INFO L175 Difference]: Start difference. First operand has 596 places, 517 transitions, 5867 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:05:17,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 532 transitions, 7019 flow [2024-06-14 12:05:20,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 532 transitions, 6799 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-14 12:05:20,937 INFO L231 Difference]: Finished difference. Result has 598 places, 519 transitions, 5938 flow [2024-06-14 12:05:20,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5647, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5938, PETRI_PLACES=598, PETRI_TRANSITIONS=519} [2024-06-14 12:05:20,937 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 566 predicate places. [2024-06-14 12:05:20,938 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 519 transitions, 5938 flow [2024-06-14 12:05:20,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:20,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:20,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:20,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-14 12:05:20,938 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:20,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1033998624, now seen corresponding path program 19 times [2024-06-14 12:05:20,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:20,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577225427] [2024-06-14 12:05:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:20,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:22,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:22,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577225427] [2024-06-14 12:05:22,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577225427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:22,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:22,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:05:22,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540884987] [2024-06-14 12:05:22,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:22,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:05:22,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:22,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:05:22,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:05:22,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:22,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 519 transitions, 5938 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:22,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:22,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:22,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:23,319 INFO L124 PetriNetUnfolderBase]: 995/1889 cut-off events. [2024-06-14 12:05:23,319 INFO L125 PetriNetUnfolderBase]: For 605527/605527 co-relation queries the response was YES. [2024-06-14 12:05:23,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15589 conditions, 1889 events. 995/1889 cut-off events. For 605527/605527 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 12176 event pairs, 64 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 15323. Up to 1557 conditions per place. [2024-06-14 12:05:23,353 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 446 selfloop transitions, 84 changer transitions 0/533 dead transitions. [2024-06-14 12:05:23,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 533 transitions, 7030 flow [2024-06-14 12:05:23,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 12:05:23,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-14 12:05:23,355 INFO L175 Difference]: Start difference. First operand has 598 places, 519 transitions, 5938 flow. Second operand 12 states and 150 transitions. [2024-06-14 12:05:23,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 533 transitions, 7030 flow [2024-06-14 12:05:26,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 533 transitions, 6723 flow, removed 46 selfloop flow, removed 10 redundant places. [2024-06-14 12:05:26,174 INFO L231 Difference]: Finished difference. Result has 600 places, 519 transitions, 5803 flow [2024-06-14 12:05:26,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5631, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5803, PETRI_PLACES=600, PETRI_TRANSITIONS=519} [2024-06-14 12:05:26,175 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 568 predicate places. [2024-06-14 12:05:26,175 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 519 transitions, 5803 flow [2024-06-14 12:05:26,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:26,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:26,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:26,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-14 12:05:26,175 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:26,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1033990905, now seen corresponding path program 24 times [2024-06-14 12:05:26,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:26,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20944302] [2024-06-14 12:05:26,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:26,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:27,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:27,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20944302] [2024-06-14 12:05:27,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20944302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:27,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:27,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:05:27,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685233310] [2024-06-14 12:05:27,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:27,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:05:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:27,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:05:27,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:05:28,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:28,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 519 transitions, 5803 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:28,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:28,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:28,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:28,986 INFO L124 PetriNetUnfolderBase]: 993/1886 cut-off events. [2024-06-14 12:05:28,987 INFO L125 PetriNetUnfolderBase]: For 562875/562875 co-relation queries the response was YES. [2024-06-14 12:05:29,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15186 conditions, 1886 events. 993/1886 cut-off events. For 562875/562875 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 12189 event pairs, 64 based on Foata normal form. 1/1885 useless extension candidates. Maximal degree in co-relation 14919. Up to 1494 conditions per place. [2024-06-14 12:05:29,023 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 422 selfloop transitions, 107 changer transitions 0/532 dead transitions. [2024-06-14 12:05:29,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 532 transitions, 6891 flow [2024-06-14 12:05:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:05:29,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:05:29,024 INFO L175 Difference]: Start difference. First operand has 600 places, 519 transitions, 5803 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:05:29,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 532 transitions, 6891 flow [2024-06-14 12:05:31,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 532 transitions, 6663 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-14 12:05:31,928 INFO L231 Difference]: Finished difference. Result has 601 places, 519 transitions, 5794 flow [2024-06-14 12:05:31,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5575, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5794, PETRI_PLACES=601, PETRI_TRANSITIONS=519} [2024-06-14 12:05:31,928 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 569 predicate places. [2024-06-14 12:05:31,928 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 519 transitions, 5794 flow [2024-06-14 12:05:31,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:31,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:31,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:31,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-14 12:05:31,928 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:31,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:31,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1290758604, now seen corresponding path program 20 times [2024-06-14 12:05:31,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:31,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434670270] [2024-06-14 12:05:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:31,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:33,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:33,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434670270] [2024-06-14 12:05:33,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434670270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:33,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:33,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:05:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506596506] [2024-06-14 12:05:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:33,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:05:33,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:05:33,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:05:33,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:33,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 519 transitions, 5794 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:33,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:33,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:33,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:34,293 INFO L124 PetriNetUnfolderBase]: 990/1881 cut-off events. [2024-06-14 12:05:34,293 INFO L125 PetriNetUnfolderBase]: For 544121/544121 co-relation queries the response was YES. [2024-06-14 12:05:34,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14708 conditions, 1881 events. 990/1881 cut-off events. For 544121/544121 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 12124 event pairs, 63 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 14440. Up to 1516 conditions per place. [2024-06-14 12:05:34,327 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 435 selfloop transitions, 96 changer transitions 0/534 dead transitions. [2024-06-14 12:05:34,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 534 transitions, 6892 flow [2024-06-14 12:05:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:05:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:05:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:05:34,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:05:34,328 INFO L175 Difference]: Start difference. First operand has 601 places, 519 transitions, 5794 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:05:34,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 534 transitions, 6892 flow [2024-06-14 12:05:37,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 534 transitions, 6609 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-14 12:05:37,203 INFO L231 Difference]: Finished difference. Result has 601 places, 519 transitions, 5707 flow [2024-06-14 12:05:37,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5511, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5707, PETRI_PLACES=601, PETRI_TRANSITIONS=519} [2024-06-14 12:05:37,203 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 569 predicate places. [2024-06-14 12:05:37,203 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 519 transitions, 5707 flow [2024-06-14 12:05:37,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:37,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:37,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:37,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-14 12:05:37,204 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:37,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash 748002121, now seen corresponding path program 16 times [2024-06-14 12:05:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:37,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849133783] [2024-06-14 12:05:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:37,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849133783] [2024-06-14 12:05:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849133783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:38,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:38,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:05:38,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767233538] [2024-06-14 12:05:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:38,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:05:38,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:05:38,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:05:38,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:38,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 519 transitions, 5707 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:38,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:38,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:38,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:39,441 INFO L124 PetriNetUnfolderBase]: 994/1890 cut-off events. [2024-06-14 12:05:39,441 INFO L125 PetriNetUnfolderBase]: For 549495/549495 co-relation queries the response was YES. [2024-06-14 12:05:39,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14740 conditions, 1890 events. 994/1890 cut-off events. For 549495/549495 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 12227 event pairs, 72 based on Foata normal form. 2/1886 useless extension candidates. Maximal degree in co-relation 14471. Up to 1527 conditions per place. [2024-06-14 12:05:39,474 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 434 selfloop transitions, 94 changer transitions 0/531 dead transitions. [2024-06-14 12:05:39,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 531 transitions, 6841 flow [2024-06-14 12:05:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:05:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:05:39,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:05:39,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 12:05:39,475 INFO L175 Difference]: Start difference. First operand has 601 places, 519 transitions, 5707 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:05:39,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 531 transitions, 6841 flow [2024-06-14 12:05:42,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 531 transitions, 6576 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:05:42,510 INFO L231 Difference]: Finished difference. Result has 599 places, 520 transitions, 5690 flow [2024-06-14 12:05:42,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5442, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5690, PETRI_PLACES=599, PETRI_TRANSITIONS=520} [2024-06-14 12:05:42,511 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 567 predicate places. [2024-06-14 12:05:42,511 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 520 transitions, 5690 flow [2024-06-14 12:05:42,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:42,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:42,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:42,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-14 12:05:42,511 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:42,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash 748217602, now seen corresponding path program 21 times [2024-06-14 12:05:42,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:42,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273479418] [2024-06-14 12:05:42,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:42,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:44,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:44,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273479418] [2024-06-14 12:05:44,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273479418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:44,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:44,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:05:44,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597620378] [2024-06-14 12:05:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:05:44,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:05:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:05:44,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:44,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 520 transitions, 5690 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:44,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:44,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:44,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:44,920 INFO L124 PetriNetUnfolderBase]: 998/1897 cut-off events. [2024-06-14 12:05:44,921 INFO L125 PetriNetUnfolderBase]: For 555911/555911 co-relation queries the response was YES. [2024-06-14 12:05:44,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14826 conditions, 1897 events. 998/1897 cut-off events. For 555911/555911 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 12281 event pairs, 72 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 14557. Up to 1303 conditions per place. [2024-06-14 12:05:44,955 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 358 selfloop transitions, 171 changer transitions 0/532 dead transitions. [2024-06-14 12:05:44,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 532 transitions, 6824 flow [2024-06-14 12:05:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:05:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:05:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:05:44,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-14 12:05:44,956 INFO L175 Difference]: Start difference. First operand has 599 places, 520 transitions, 5690 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:05:44,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 532 transitions, 6824 flow [2024-06-14 12:05:48,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 532 transitions, 6586 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 12:05:48,036 INFO L231 Difference]: Finished difference. Result has 601 places, 521 transitions, 5852 flow [2024-06-14 12:05:48,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5452, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5852, PETRI_PLACES=601, PETRI_TRANSITIONS=521} [2024-06-14 12:05:48,036 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 569 predicate places. [2024-06-14 12:05:48,037 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 521 transitions, 5852 flow [2024-06-14 12:05:48,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:48,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:48,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:48,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-14 12:05:48,037 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:48,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:48,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1511880857, now seen corresponding path program 17 times [2024-06-14 12:05:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:48,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111503887] [2024-06-14 12:05:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:49,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111503887] [2024-06-14 12:05:49,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111503887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:49,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:49,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:05:49,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407008259] [2024-06-14 12:05:49,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:49,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:05:49,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:49,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:05:49,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:05:49,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:49,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 521 transitions, 5852 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:49,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:49,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:49,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:50,389 INFO L124 PetriNetUnfolderBase]: 1002/1905 cut-off events. [2024-06-14 12:05:50,389 INFO L125 PetriNetUnfolderBase]: For 561348/561348 co-relation queries the response was YES. [2024-06-14 12:05:50,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15034 conditions, 1905 events. 1002/1905 cut-off events. For 561348/561348 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 12360 event pairs, 72 based on Foata normal form. 2/1902 useless extension candidates. Maximal degree in co-relation 14764. Up to 1629 conditions per place. [2024-06-14 12:05:50,423 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 467 selfloop transitions, 63 changer transitions 0/533 dead transitions. [2024-06-14 12:05:50,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 533 transitions, 6992 flow [2024-06-14 12:05:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:05:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:05:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:05:50,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-14 12:05:50,424 INFO L175 Difference]: Start difference. First operand has 601 places, 521 transitions, 5852 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:05:50,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 533 transitions, 6992 flow [2024-06-14 12:05:53,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 533 transitions, 6602 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 12:05:53,631 INFO L231 Difference]: Finished difference. Result has 603 places, 522 transitions, 5650 flow [2024-06-14 12:05:53,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5462, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5650, PETRI_PLACES=603, PETRI_TRANSITIONS=522} [2024-06-14 12:05:53,632 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 571 predicate places. [2024-06-14 12:05:53,632 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 522 transitions, 5650 flow [2024-06-14 12:05:53,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:53,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:53,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:53,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-14 12:05:53,632 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:53,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:53,633 INFO L85 PathProgramCache]: Analyzing trace with hash 990876933, now seen corresponding path program 18 times [2024-06-14 12:05:53,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:53,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42990150] [2024-06-14 12:05:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:53,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:05:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:05:55,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:05:55,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42990150] [2024-06-14 12:05:55,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42990150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:05:55,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:05:55,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:05:55,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336126236] [2024-06-14 12:05:55,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:05:55,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:05:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:05:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:05:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:05:55,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:05:55,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 522 transitions, 5650 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:55,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:05:55,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:05:55,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:05:56,173 INFO L124 PetriNetUnfolderBase]: 1006/1911 cut-off events. [2024-06-14 12:05:56,173 INFO L125 PetriNetUnfolderBase]: For 566418/566418 co-relation queries the response was YES. [2024-06-14 12:05:56,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14878 conditions, 1911 events. 1006/1911 cut-off events. For 566418/566418 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 12384 event pairs, 72 based on Foata normal form. 2/1908 useless extension candidates. Maximal degree in co-relation 14607. Up to 1649 conditions per place. [2024-06-14 12:05:56,207 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 473 selfloop transitions, 58 changer transitions 0/534 dead transitions. [2024-06-14 12:05:56,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 534 transitions, 6794 flow [2024-06-14 12:05:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:05:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:05:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:05:56,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 12:05:56,208 INFO L175 Difference]: Start difference. First operand has 603 places, 522 transitions, 5650 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:05:56,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 534 transitions, 6794 flow [2024-06-14 12:05:59,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 534 transitions, 6616 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 12:05:59,240 INFO L231 Difference]: Finished difference. Result has 605 places, 523 transitions, 5652 flow [2024-06-14 12:05:59,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5472, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5652, PETRI_PLACES=605, PETRI_TRANSITIONS=523} [2024-06-14 12:05:59,241 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 573 predicate places. [2024-06-14 12:05:59,241 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 523 transitions, 5652 flow [2024-06-14 12:05:59,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:05:59,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:05:59,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:05:59,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-14 12:05:59,241 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:05:59,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:05:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash 791430993, now seen corresponding path program 19 times [2024-06-14 12:05:59,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:05:59,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510667636] [2024-06-14 12:05:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:05:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:05:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:00,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:00,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510667636] [2024-06-14 12:06:00,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510667636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:00,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:00,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:06:00,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581718724] [2024-06-14 12:06:00,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:00,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:06:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:00,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:06:00,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:06:00,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:00,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 523 transitions, 5652 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:00,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:00,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:00,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:01,396 INFO L124 PetriNetUnfolderBase]: 1010/1921 cut-off events. [2024-06-14 12:06:01,396 INFO L125 PetriNetUnfolderBase]: For 571827/571827 co-relation queries the response was YES. [2024-06-14 12:06:01,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14928 conditions, 1921 events. 1010/1921 cut-off events. For 571827/571827 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 12496 event pairs, 72 based on Foata normal form. 2/1918 useless extension candidates. Maximal degree in co-relation 14656. Up to 1672 conditions per place. [2024-06-14 12:06:01,431 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 481 selfloop transitions, 52 changer transitions 0/536 dead transitions. [2024-06-14 12:06:01,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 536 transitions, 6816 flow [2024-06-14 12:06:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:06:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:06:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:06:01,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 12:06:01,432 INFO L175 Difference]: Start difference. First operand has 605 places, 523 transitions, 5652 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:06:01,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 536 transitions, 6816 flow [2024-06-14 12:06:04,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 536 transitions, 6644 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 12:06:04,335 INFO L231 Difference]: Finished difference. Result has 608 places, 525 transitions, 5669 flow [2024-06-14 12:06:04,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5482, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5669, PETRI_PLACES=608, PETRI_TRANSITIONS=525} [2024-06-14 12:06:04,335 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 576 predicate places. [2024-06-14 12:06:04,335 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 525 transitions, 5669 flow [2024-06-14 12:06:04,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:04,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:04,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:04,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-14 12:06:04,336 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:04,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:04,336 INFO L85 PathProgramCache]: Analyzing trace with hash 748209883, now seen corresponding path program 25 times [2024-06-14 12:06:04,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:04,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479387468] [2024-06-14 12:06:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:04,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:05,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:05,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479387468] [2024-06-14 12:06:05,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479387468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:05,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:05,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:06:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210885245] [2024-06-14 12:06:05,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:05,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:06:05,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:06:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:06:06,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:06,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 525 transitions, 5669 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:06,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:06,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:06,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:06,730 INFO L124 PetriNetUnfolderBase]: 1013/1926 cut-off events. [2024-06-14 12:06:06,730 INFO L125 PetriNetUnfolderBase]: For 550891/550891 co-relation queries the response was YES. [2024-06-14 12:06:06,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14913 conditions, 1926 events. 1013/1926 cut-off events. For 550891/550891 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 12510 event pairs, 72 based on Foata normal form. 1/1922 useless extension candidates. Maximal degree in co-relation 14639. Up to 1369 conditions per place. [2024-06-14 12:06:06,770 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 366 selfloop transitions, 169 changer transitions 0/538 dead transitions. [2024-06-14 12:06:06,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 538 transitions, 6829 flow [2024-06-14 12:06:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:06:06,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:06:06,771 INFO L175 Difference]: Start difference. First operand has 608 places, 525 transitions, 5669 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:06:06,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 538 transitions, 6829 flow [2024-06-14 12:06:10,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 538 transitions, 6672 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 12:06:10,012 INFO L231 Difference]: Finished difference. Result has 612 places, 527 transitions, 5925 flow [2024-06-14 12:06:10,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5512, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5925, PETRI_PLACES=612, PETRI_TRANSITIONS=527} [2024-06-14 12:06:10,013 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 580 predicate places. [2024-06-14 12:06:10,013 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 527 transitions, 5925 flow [2024-06-14 12:06:10,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:10,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:10,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:10,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-14 12:06:10,013 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:10,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:10,014 INFO L85 PathProgramCache]: Analyzing trace with hash 796937523, now seen corresponding path program 20 times [2024-06-14 12:06:10,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:10,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081132649] [2024-06-14 12:06:10,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:10,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081132649] [2024-06-14 12:06:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081132649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:11,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:11,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:06:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630213410] [2024-06-14 12:06:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:06:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:06:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:06:11,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:11,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 527 transitions, 5925 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:11,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:11,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:11,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:12,411 INFO L124 PetriNetUnfolderBase]: 1017/1934 cut-off events. [2024-06-14 12:06:12,411 INFO L125 PetriNetUnfolderBase]: For 581268/581268 co-relation queries the response was YES. [2024-06-14 12:06:12,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15203 conditions, 1934 events. 1017/1934 cut-off events. For 581268/581268 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 12558 event pairs, 74 based on Foata normal form. 2/1931 useless extension candidates. Maximal degree in co-relation 14928. Up to 1679 conditions per place. [2024-06-14 12:06:12,448 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 481 selfloop transitions, 55 changer transitions 0/539 dead transitions. [2024-06-14 12:06:12,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 539 transitions, 7083 flow [2024-06-14 12:06:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:06:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:06:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:06:12,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:06:12,449 INFO L175 Difference]: Start difference. First operand has 612 places, 527 transitions, 5925 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:06:12,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 539 transitions, 7083 flow [2024-06-14 12:06:15,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 539 transitions, 6685 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-14 12:06:15,897 INFO L231 Difference]: Finished difference. Result has 613 places, 528 transitions, 5705 flow [2024-06-14 12:06:15,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5527, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5705, PETRI_PLACES=613, PETRI_TRANSITIONS=528} [2024-06-14 12:06:15,898 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 581 predicate places. [2024-06-14 12:06:15,898 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 528 transitions, 5705 flow [2024-06-14 12:06:15,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:15,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:15,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:15,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-14 12:06:15,899 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:15,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash 618167806, now seen corresponding path program 22 times [2024-06-14 12:06:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:15,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545859444] [2024-06-14 12:06:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:15,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545859444] [2024-06-14 12:06:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545859444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:17,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:06:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391505141] [2024-06-14 12:06:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:17,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:06:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:06:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:06:17,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:17,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 528 transitions, 5705 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:17,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:17,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:17,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:18,738 INFO L124 PetriNetUnfolderBase]: 1021/1942 cut-off events. [2024-06-14 12:06:18,738 INFO L125 PetriNetUnfolderBase]: For 587191/587191 co-relation queries the response was YES. [2024-06-14 12:06:18,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15069 conditions, 1942 events. 1021/1942 cut-off events. For 587191/587191 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 12625 event pairs, 72 based on Foata normal form. 2/1942 useless extension candidates. Maximal degree in co-relation 14793. Up to 1774 conditions per place. [2024-06-14 12:06:18,774 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 513 selfloop transitions, 24 changer transitions 0/540 dead transitions. [2024-06-14 12:06:18,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 540 transitions, 6857 flow [2024-06-14 12:06:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:06:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:06:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:06:18,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-14 12:06:18,775 INFO L175 Difference]: Start difference. First operand has 613 places, 528 transitions, 5705 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:06:18,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 540 transitions, 6857 flow [2024-06-14 12:06:22,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 540 transitions, 6689 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-14 12:06:22,038 INFO L231 Difference]: Finished difference. Result has 615 places, 529 transitions, 5645 flow [2024-06-14 12:06:22,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5537, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5645, PETRI_PLACES=615, PETRI_TRANSITIONS=529} [2024-06-14 12:06:22,039 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 583 predicate places. [2024-06-14 12:06:22,039 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 529 transitions, 5645 flow [2024-06-14 12:06:22,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:22,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:22,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:22,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-14 12:06:22,039 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:22,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:22,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1068257047, now seen corresponding path program 21 times [2024-06-14 12:06:22,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:22,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366521936] [2024-06-14 12:06:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:23,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:23,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366521936] [2024-06-14 12:06:23,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366521936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:23,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:23,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:06:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571037309] [2024-06-14 12:06:23,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:23,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:06:23,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:23,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:06:23,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:06:23,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:23,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 529 transitions, 5645 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:23,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:23,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:23,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:24,088 INFO L124 PetriNetUnfolderBase]: 1018/1937 cut-off events. [2024-06-14 12:06:24,088 INFO L125 PetriNetUnfolderBase]: For 539346/539346 co-relation queries the response was YES. [2024-06-14 12:06:24,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14394 conditions, 1937 events. 1018/1937 cut-off events. For 539346/539346 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 12594 event pairs, 71 based on Foata normal form. 2/1934 useless extension candidates. Maximal degree in co-relation 14117. Up to 1683 conditions per place. [2024-06-14 12:06:24,124 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 487 selfloop transitions, 51 changer transitions 0/541 dead transitions. [2024-06-14 12:06:24,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 541 transitions, 6747 flow [2024-06-14 12:06:24,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:06:24,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:06:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:06:24,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 12:06:24,125 INFO L175 Difference]: Start difference. First operand has 615 places, 529 transitions, 5645 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:06:24,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 541 transitions, 6747 flow [2024-06-14 12:06:27,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 541 transitions, 6649 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 12:06:27,116 INFO L231 Difference]: Finished difference. Result has 617 places, 529 transitions, 5653 flow [2024-06-14 12:06:27,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5547, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5653, PETRI_PLACES=617, PETRI_TRANSITIONS=529} [2024-06-14 12:06:27,117 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 585 predicate places. [2024-06-14 12:06:27,117 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 529 transitions, 5653 flow [2024-06-14 12:06:27,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:27,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:27,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:27,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-14 12:06:27,117 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:27,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:27,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1275064309, now seen corresponding path program 26 times [2024-06-14 12:06:27,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:27,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788597543] [2024-06-14 12:06:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:27,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:28,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:28,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788597543] [2024-06-14 12:06:28,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788597543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:28,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:28,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:06:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947782966] [2024-06-14 12:06:28,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:28,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:06:28,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:06:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:06:28,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:28,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 529 transitions, 5653 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:28,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:28,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:28,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:29,692 INFO L124 PetriNetUnfolderBase]: 1021/1944 cut-off events. [2024-06-14 12:06:29,692 INFO L125 PetriNetUnfolderBase]: For 517722/517722 co-relation queries the response was YES. [2024-06-14 12:06:29,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14455 conditions, 1944 events. 1021/1944 cut-off events. For 517722/517722 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 12674 event pairs, 73 based on Foata normal form. 1/1940 useless extension candidates. Maximal degree in co-relation 14177. Up to 1651 conditions per place. [2024-06-14 12:06:29,730 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 464 selfloop transitions, 75 changer transitions 0/542 dead transitions. [2024-06-14 12:06:29,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 542 transitions, 6825 flow [2024-06-14 12:06:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:06:29,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-14 12:06:29,731 INFO L175 Difference]: Start difference. First operand has 617 places, 529 transitions, 5653 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:06:29,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 542 transitions, 6825 flow [2024-06-14 12:06:32,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 542 transitions, 6534 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-14 12:06:32,612 INFO L231 Difference]: Finished difference. Result has 618 places, 531 transitions, 5591 flow [2024-06-14 12:06:32,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5362, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5591, PETRI_PLACES=618, PETRI_TRANSITIONS=531} [2024-06-14 12:06:32,612 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 586 predicate places. [2024-06-14 12:06:32,612 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 531 transitions, 5591 flow [2024-06-14 12:06:32,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:32,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:32,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:32,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-14 12:06:32,613 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:32,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash -451016443, now seen corresponding path program 27 times [2024-06-14 12:06:32,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:32,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090776435] [2024-06-14 12:06:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:32,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:34,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:34,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090776435] [2024-06-14 12:06:34,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090776435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:34,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:34,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:06:34,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269567023] [2024-06-14 12:06:34,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:34,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:06:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:34,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:06:34,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:06:34,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:34,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 531 transitions, 5591 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:34,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:34,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:34,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:35,165 INFO L124 PetriNetUnfolderBase]: 1024/1947 cut-off events. [2024-06-14 12:06:35,165 INFO L125 PetriNetUnfolderBase]: For 520788/520788 co-relation queries the response was YES. [2024-06-14 12:06:35,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14314 conditions, 1947 events. 1024/1947 cut-off events. For 520788/520788 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 12695 event pairs, 76 based on Foata normal form. 1/1943 useless extension candidates. Maximal degree in co-relation 14036. Up to 1584 conditions per place. [2024-06-14 12:06:35,201 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 452 selfloop transitions, 92 changer transitions 0/547 dead transitions. [2024-06-14 12:06:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 547 transitions, 7231 flow [2024-06-14 12:06:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:06:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:06:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-14 12:06:35,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-06-14 12:06:35,202 INFO L175 Difference]: Start difference. First operand has 618 places, 531 transitions, 5591 flow. Second operand 13 states and 167 transitions. [2024-06-14 12:06:35,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 547 transitions, 7231 flow [2024-06-14 12:06:38,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 547 transitions, 6982 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-14 12:06:38,392 INFO L231 Difference]: Finished difference. Result has 620 places, 533 transitions, 5595 flow [2024-06-14 12:06:38,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5342, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5595, PETRI_PLACES=620, PETRI_TRANSITIONS=533} [2024-06-14 12:06:38,393 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 588 predicate places. [2024-06-14 12:06:38,393 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 533 transitions, 5595 flow [2024-06-14 12:06:38,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:38,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:38,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:38,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-14 12:06:38,393 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:38,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1073773249, now seen corresponding path program 28 times [2024-06-14 12:06:38,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:38,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708330011] [2024-06-14 12:06:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:40,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708330011] [2024-06-14 12:06:40,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708330011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:40,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:40,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:06:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949408308] [2024-06-14 12:06:40,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:40,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:06:40,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:40,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:06:40,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:06:40,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:40,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 533 transitions, 5595 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:40,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:40,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:40,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:41,273 INFO L124 PetriNetUnfolderBase]: 1027/1952 cut-off events. [2024-06-14 12:06:41,273 INFO L125 PetriNetUnfolderBase]: For 525006/525006 co-relation queries the response was YES. [2024-06-14 12:06:41,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14306 conditions, 1952 events. 1027/1952 cut-off events. For 525006/525006 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 12707 event pairs, 75 based on Foata normal form. 1/1948 useless extension candidates. Maximal degree in co-relation 14028. Up to 1688 conditions per place. [2024-06-14 12:06:41,309 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 482 selfloop transitions, 61 changer transitions 0/546 dead transitions. [2024-06-14 12:06:41,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 546 transitions, 6779 flow [2024-06-14 12:06:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:41,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:06:41,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-14 12:06:41,310 INFO L175 Difference]: Start difference. First operand has 620 places, 533 transitions, 5595 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:06:41,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 546 transitions, 6779 flow [2024-06-14 12:06:44,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 546 transitions, 6536 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-14 12:06:44,464 INFO L231 Difference]: Finished difference. Result has 621 places, 535 transitions, 5557 flow [2024-06-14 12:06:44,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5352, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5557, PETRI_PLACES=621, PETRI_TRANSITIONS=535} [2024-06-14 12:06:44,464 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 589 predicate places. [2024-06-14 12:06:44,465 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 535 transitions, 5557 flow [2024-06-14 12:06:44,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:44,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:44,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:44,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-14 12:06:44,465 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:44,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1808657285, now seen corresponding path program 29 times [2024-06-14 12:06:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:44,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941924564] [2024-06-14 12:06:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:46,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:46,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941924564] [2024-06-14 12:06:46,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941924564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:46,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:46,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:06:46,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151969397] [2024-06-14 12:06:46,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:46,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:06:46,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:46,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:06:46,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:06:46,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:46,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 535 transitions, 5557 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:46,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:46,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:46,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:47,660 INFO L124 PetriNetUnfolderBase]: 1025/1951 cut-off events. [2024-06-14 12:06:47,660 INFO L125 PetriNetUnfolderBase]: For 502657/502657 co-relation queries the response was YES. [2024-06-14 12:06:47,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13952 conditions, 1951 events. 1025/1951 cut-off events. For 502657/502657 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 12701 event pairs, 75 based on Foata normal form. 1/1947 useless extension candidates. Maximal degree in co-relation 13673. Up to 1392 conditions per place. [2024-06-14 12:06:47,697 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 371 selfloop transitions, 172 changer transitions 0/546 dead transitions. [2024-06-14 12:06:47,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 546 transitions, 6667 flow [2024-06-14 12:06:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:06:47,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:06:47,699 INFO L175 Difference]: Start difference. First operand has 621 places, 535 transitions, 5557 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:06:47,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 546 transitions, 6667 flow [2024-06-14 12:06:50,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 546 transitions, 6432 flow, removed 58 selfloop flow, removed 10 redundant places. [2024-06-14 12:06:50,769 INFO L231 Difference]: Finished difference. Result has 623 places, 535 transitions, 5671 flow [2024-06-14 12:06:50,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5322, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5671, PETRI_PLACES=623, PETRI_TRANSITIONS=535} [2024-06-14 12:06:50,769 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 591 predicate places. [2024-06-14 12:06:50,769 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 535 transitions, 5671 flow [2024-06-14 12:06:50,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:50,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:50,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:50,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-14 12:06:50,770 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:50,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1816285424, now seen corresponding path program 23 times [2024-06-14 12:06:50,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:50,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823525124] [2024-06-14 12:06:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:50,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:52,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823525124] [2024-06-14 12:06:52,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823525124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:52,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:52,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:06:52,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412225503] [2024-06-14 12:06:52,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:52,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:06:52,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:52,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:06:52,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:06:52,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:52,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 535 transitions, 5671 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:52,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:52,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:52,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:53,267 INFO L124 PetriNetUnfolderBase]: 1036/1970 cut-off events. [2024-06-14 12:06:53,267 INFO L125 PetriNetUnfolderBase]: For 589473/589473 co-relation queries the response was YES. [2024-06-14 12:06:53,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14855 conditions, 1970 events. 1036/1970 cut-off events. For 589473/589473 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 12862 event pairs, 77 based on Foata normal form. 2/1967 useless extension candidates. Maximal degree in co-relation 14575. Up to 1466 conditions per place. [2024-06-14 12:06:53,306 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 414 selfloop transitions, 135 changer transitions 0/552 dead transitions. [2024-06-14 12:06:53,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 552 transitions, 7377 flow [2024-06-14 12:06:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-14 12:06:53,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:06:53,307 INFO L175 Difference]: Start difference. First operand has 623 places, 535 transitions, 5671 flow. Second operand 12 states and 156 transitions. [2024-06-14 12:06:53,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 552 transitions, 7377 flow [2024-06-14 12:06:56,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 552 transitions, 7017 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:06:56,481 INFO L231 Difference]: Finished difference. Result has 624 places, 537 transitions, 5699 flow [2024-06-14 12:06:56,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5311, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5699, PETRI_PLACES=624, PETRI_TRANSITIONS=537} [2024-06-14 12:06:56,481 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 592 predicate places. [2024-06-14 12:06:56,481 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 537 transitions, 5699 flow [2024-06-14 12:06:56,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:56,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:06:56,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:06:56,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-14 12:06:56,481 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:06:56,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:06:56,482 INFO L85 PathProgramCache]: Analyzing trace with hash -443866324, now seen corresponding path program 24 times [2024-06-14 12:06:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:06:56,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534492210] [2024-06-14 12:06:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:06:56,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:06:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:06:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:06:58,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:06:58,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534492210] [2024-06-14 12:06:58,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534492210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:06:58,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:06:58,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:06:58,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086883169] [2024-06-14 12:06:58,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:06:58,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:06:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:06:58,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:06:58,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:06:58,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:06:58,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 537 transitions, 5699 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:06:58,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:06:58,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:06:58,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:06:59,068 INFO L124 PetriNetUnfolderBase]: 1043/1985 cut-off events. [2024-06-14 12:06:59,069 INFO L125 PetriNetUnfolderBase]: For 595963/595963 co-relation queries the response was YES. [2024-06-14 12:06:59,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14967 conditions, 1985 events. 1043/1985 cut-off events. For 595963/595963 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 12959 event pairs, 78 based on Foata normal form. 2/1982 useless extension candidates. Maximal degree in co-relation 14686. Up to 1680 conditions per place. [2024-06-14 12:06:59,102 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 474 selfloop transitions, 75 changer transitions 0/552 dead transitions. [2024-06-14 12:06:59,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 552 transitions, 6901 flow [2024-06-14 12:06:59,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:06:59,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:06:59,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:06:59,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:06:59,103 INFO L175 Difference]: Start difference. First operand has 624 places, 537 transitions, 5699 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:06:59,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 552 transitions, 6901 flow [2024-06-14 12:07:02,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 552 transitions, 6651 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-14 12:07:02,722 INFO L231 Difference]: Finished difference. Result has 628 places, 540 transitions, 5690 flow [2024-06-14 12:07:02,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5451, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5690, PETRI_PLACES=628, PETRI_TRANSITIONS=540} [2024-06-14 12:07:02,722 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 596 predicate places. [2024-06-14 12:07:02,722 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 540 transitions, 5690 flow [2024-06-14 12:07:02,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:07:02,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:07:02,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:07:02,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-14 12:07:02,722 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:07:02,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:07:02,723 INFO L85 PathProgramCache]: Analyzing trace with hash -442154976, now seen corresponding path program 25 times [2024-06-14 12:07:02,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:07:02,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159715407] [2024-06-14 12:07:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:07:02,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:07:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:07:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:07:04,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:07:04,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159715407] [2024-06-14 12:07:04,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159715407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:07:04,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:07:04,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:07:04,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331484083] [2024-06-14 12:07:04,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:07:04,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:07:04,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:07:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:07:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:07:04,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-14 12:07:04,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 540 transitions, 5690 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:07:04,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:07:04,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-14 12:07:04,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:07:05,112 INFO L124 PetriNetUnfolderBase]: 1054/2006 cut-off events. [2024-06-14 12:07:05,112 INFO L125 PetriNetUnfolderBase]: For 655712/655712 co-relation queries the response was YES. [2024-06-14 12:07:05,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15699 conditions, 2006 events. 1054/2006 cut-off events. For 655712/655712 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 13133 event pairs, 77 based on Foata normal form. 2/2006 useless extension candidates. Maximal degree in co-relation 15416. Up to 1787 conditions per place. [2024-06-14 12:07:05,148 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 530 selfloop transitions, 23 changer transitions 0/556 dead transitions. [2024-06-14 12:07:05,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 556 transitions, 7408 flow [2024-06-14 12:07:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:07:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:07:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:07:05,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 12:07:05,149 INFO L175 Difference]: Start difference. First operand has 628 places, 540 transitions, 5690 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:07:05,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 556 transitions, 7408 flow Killed by 15