./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.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/mix000.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/mix000.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix000.oepc.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-bcb38a6-m [2024-06-04 14:32:13,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:32:13,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:32:13,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:32:13,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:32:13,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:32:13,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:32:13,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:32:13,767 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:32:13,770 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:32:13,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:32:13,770 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:32:13,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:32:13,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:32:13,772 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:32:13,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:32:13,772 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:32:13,773 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:32:13,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:32:13,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:32:13,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:32:13,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:32:13,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:32:13,774 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:32:13,774 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:32:13,774 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:32:13,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:32:13,775 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:32:13,775 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:32:13,775 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:32:13,776 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:32:13,776 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:32:13,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:32:13,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:32:13,777 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:32:13,777 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:32:13,777 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:32:13,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:32:13,778 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:32:13,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:32:13,778 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:32:13,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:32:13,778 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:32:13,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:32:13,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:32:13,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:32:13,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:32:13,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:32:13,980 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:32:13,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-04 14:32:15,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:32:15,295 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:32:15,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-04 14:32:15,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9428f95/85249b51a53d4cdab091191879bba622/FLAG11c3610a7 [2024-06-04 14:32:15,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da9428f95/85249b51a53d4cdab091191879bba622 [2024-06-04 14:32:15,324 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:32:15,329 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:32:15,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix000.oepc.yml/witness.yml [2024-06-04 14:32:15,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:32:15,415 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:32:15,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:32:15,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:32:15,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:32:15,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:32:15" (1/2) ... [2024-06-04 14:32:15,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4e43cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:32:15, skipping insertion in model container [2024-06-04 14:32:15,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:32:15" (1/2) ... [2024-06-04 14:32:15,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2491fb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:32:15, skipping insertion in model container [2024-06-04 14:32:15,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:32:15" (2/2) ... [2024-06-04 14:32:15,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4e43cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15, skipping insertion in model container [2024-06-04 14:32:15,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:32:15" (2/2) ... [2024-06-04 14:32:15,423 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:32:15,541 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:32:15,543 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 || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$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$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:32:15,543 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! 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$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_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 || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:32:15,543 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:32:15,543 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-04 14:32:15,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:32:15,907 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:32:15,914 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:32:16,026 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:32:16,053 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:32:16,054 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16 WrapperNode [2024-06-04 14:32:16,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:32:16,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:32:16,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:32:16,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:32:16,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,100 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-04 14:32:16,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:32:16,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:32:16,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:32:16,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:32:16,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,135 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]. [2024-06-04 14:32:16,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:32:16,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:32:16,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:32:16,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:32:16,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (1/1) ... [2024-06-04 14:32:16,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:32:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:32:16,168 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) [2024-06-04 14:32:16,175 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 [2024-06-04 14:32:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:32:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:32:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:32:16,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:32:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:32:16,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:32:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:32:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:32:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:32:16,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:32:16,202 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:32:16,303 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:32:16,305 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:32:16,614 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:32:16,614 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:32:16,756 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:32:16,757 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:32:16,757 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:32:16 BoogieIcfgContainer [2024-06-04 14:32:16,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:32:16,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:32:16,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:32:16,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:32:16,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:32:15" (1/4) ... [2024-06-04 14:32:16,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6e54ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:32:16, skipping insertion in model container [2024-06-04 14:32:16,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:32:15" (2/4) ... [2024-06-04 14:32:16,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6e54ef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:32:16, skipping insertion in model container [2024-06-04 14:32:16,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:16" (3/4) ... [2024-06-04 14:32:16,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6e54ef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:32:16, skipping insertion in model container [2024-06-04 14:32:16,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:32:16" (4/4) ... [2024-06-04 14:32:16,764 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.oepc.i [2024-06-04 14:32:16,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:32:16,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:32:16,777 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:32:16,809 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:32:16,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 14:32:16,853 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 14:32:16,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:32:16,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:32:16,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 14:32:16,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 14:32:16,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:32:16,871 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;@7ed39840, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:32:16,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:32:16,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:32:16,876 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 14:32:16,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:32:16,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:16,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:32:16,878 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)] === [2024-06-04 14:32:16,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1460724257, now seen corresponding path program 1 times [2024-06-04 14:32:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:16,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479220127] [2024-06-04 14:32:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:17,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:17,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479220127] [2024-06-04 14:32:17,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479220127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:17,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:17,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:32:17,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134708681] [2024-06-04 14:32:17,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:17,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:32:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:32:17,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:32:17,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 14:32:17,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:17,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:17,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 14:32:17,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:17,967 INFO L124 PetriNetUnfolderBase]: 162/310 cut-off events. [2024-06-04 14:32:17,967 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 14:32:17,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 310 events. 162/310 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1182 event pairs, 97 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 609. Up to 288 conditions per place. [2024-06-04 14:32:17,972 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 14:32:17,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-04 14:32:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:32:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:32:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-04 14:32:17,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-04 14:32:17,984 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 55 transitions. [2024-06-04 14:32:17,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-04 14:32:17,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 14:32:17,988 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 14:32:17,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 14:32:17,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 14:32:17,992 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 14:32:17,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:17,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:17,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:17,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:32:17,993 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)] === [2024-06-04 14:32:17,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:17,993 INFO L85 PathProgramCache]: Analyzing trace with hash 698380346, now seen corresponding path program 1 times [2024-06-04 14:32:17,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:17,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552988019] [2024-06-04 14:32:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:17,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:18,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:18,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552988019] [2024-06-04 14:32:18,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552988019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:18,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:18,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:32:18,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545391834] [2024-06-04 14:32:18,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:18,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:32:18,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:32:18,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:32:18,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 14:32:18,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 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) [2024-06-04 14:32:18,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:18,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 14:32:18,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:18,625 INFO L124 PetriNetUnfolderBase]: 159/307 cut-off events. [2024-06-04 14:32:18,625 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-04 14:32:18,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 307 events. 159/307 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1169 event pairs, 79 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 682. Up to 274 conditions per place. [2024-06-04 14:32:18,627 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 14:32:18,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 163 flow [2024-06-04 14:32:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:32:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:32:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-04 14:32:18,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-04 14:32:18,629 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 70 transitions. [2024-06-04 14:32:18,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 163 flow [2024-06-04 14:32:18,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:32:18,630 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 14:32:18,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 14:32:18,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 14:32:18,631 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 14:32:18,631 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) [2024-06-04 14:32:18,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:18,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:18,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:32:18,632 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)] === [2024-06-04 14:32:18,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash 173167718, now seen corresponding path program 1 times [2024-06-04 14:32:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:18,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571698841] [2024-06-04 14:32:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:18,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:19,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571698841] [2024-06-04 14:32:19,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571698841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:19,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:19,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:32:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342986642] [2024-06-04 14:32:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:19,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:32:19,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:32:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:32:19,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 14:32:19,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:19,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:19,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 14:32:19,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:19,582 INFO L124 PetriNetUnfolderBase]: 156/307 cut-off events. [2024-06-04 14:32:19,583 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-04 14:32:19,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 307 events. 156/307 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1166 event pairs, 61 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 750. Up to 260 conditions per place. [2024-06-04 14:32:19,585 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-04 14:32:19,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 211 flow [2024-06-04 14:32:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:32:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:32:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-04 14:32:19,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-04 14:32:19,586 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 85 transitions. [2024-06-04 14:32:19,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 211 flow [2024-06-04 14:32:19,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:32:19,588 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-04 14:32:19,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-04 14:32:19,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-04 14:32:19,589 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-04 14:32:19,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:19,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:19,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:19,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:32:19,590 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)] === [2024-06-04 14:32:19,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:19,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1089516699, now seen corresponding path program 1 times [2024-06-04 14:32:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806170266] [2024-06-04 14:32:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:19,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:20,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:20,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806170266] [2024-06-04 14:32:20,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806170266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:20,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:20,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:20,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706841673] [2024-06-04 14:32:20,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:20,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:20,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:20,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:20,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 14:32:20,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:20,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:20,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 14:32:20,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:21,151 INFO L124 PetriNetUnfolderBase]: 181/346 cut-off events. [2024-06-04 14:32:21,152 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-06-04 14:32:21,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 346 events. 181/346 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1257 event pairs, 47 based on Foata normal form. 2/347 useless extension candidates. Maximal degree in co-relation 925. Up to 285 conditions per place. [2024-06-04 14:32:21,155 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2024-06-04 14:32:21,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 294 flow [2024-06-04 14:32:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-04 14:32:21,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2024-06-04 14:32:21,160 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 7 states and 109 transitions. [2024-06-04 14:32:21,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 294 flow [2024-06-04 14:32:21,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 274 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:21,163 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 160 flow [2024-06-04 14:32:21,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-06-04 14:32:21,164 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-04 14:32:21,164 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 160 flow [2024-06-04 14:32:21,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:21,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:21,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:21,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:32:21,165 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)] === [2024-06-04 14:32:21,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1533607161, now seen corresponding path program 1 times [2024-06-04 14:32:21,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:21,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621349555] [2024-06-04 14:32:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:21,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:21,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:21,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621349555] [2024-06-04 14:32:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621349555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:21,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:21,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:32:21,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182100179] [2024-06-04 14:32:21,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:21,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:32:21,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:21,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:32:21,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:32:21,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:21,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:21,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:21,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:21,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:21,872 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-04 14:32:21,872 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-06-04 14:32:21,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 380 events. 211/380 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1334 event pairs, 56 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1145. Up to 368 conditions per place. [2024-06-04 14:32:21,874 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-06-04 14:32:21,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 256 flow [2024-06-04 14:32:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:32:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:32:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-06-04 14:32:21,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 14:32:21,876 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 160 flow. Second operand 5 states and 62 transitions. [2024-06-04 14:32:21,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 256 flow [2024-06-04 14:32:21,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 233 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:21,878 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 164 flow [2024-06-04 14:32:21,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-06-04 14:32:21,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-04 14:32:21,879 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 164 flow [2024-06-04 14:32:21,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:21,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:21,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:21,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:32:21,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:21,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:21,880 INFO L85 PathProgramCache]: Analyzing trace with hash 584721724, now seen corresponding path program 1 times [2024-06-04 14:32:21,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:21,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164185726] [2024-06-04 14:32:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:21,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:23,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:23,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164185726] [2024-06-04 14:32:23,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164185726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:23,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:23,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006910337] [2024-06-04 14:32:23,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:23,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:23,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:23,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:23,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:23,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 14:32:23,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 164 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) [2024-06-04 14:32:23,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:23,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 14:32:23,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:23,341 INFO L124 PetriNetUnfolderBase]: 190/355 cut-off events. [2024-06-04 14:32:23,341 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2024-06-04 14:32:23,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 355 events. 190/355 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1242 event pairs, 34 based on Foata normal form. 4/358 useless extension candidates. Maximal degree in co-relation 1101. Up to 272 conditions per place. [2024-06-04 14:32:23,344 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-04 14:32:23,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 314 flow [2024-06-04 14:32:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-04 14:32:23,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-04 14:32:23,345 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 164 flow. Second operand 8 states and 118 transitions. [2024-06-04 14:32:23,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 314 flow [2024-06-04 14:32:23,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 303 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:23,360 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 171 flow [2024-06-04 14:32:23,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=171, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2024-06-04 14:32:23,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 14:32:23,363 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 171 flow [2024-06-04 14:32:23,363 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) [2024-06-04 14:32:23,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:23,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:23,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:32:23,364 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)] === [2024-06-04 14:32:23,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:23,364 INFO L85 PathProgramCache]: Analyzing trace with hash -297180796, now seen corresponding path program 1 times [2024-06-04 14:32:23,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:23,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387231527] [2024-06-04 14:32:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:23,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:23,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:23,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387231527] [2024-06-04 14:32:23,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387231527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:23,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:23,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:23,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332867774] [2024-06-04 14:32:23,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:23,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:23,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:23,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:23,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:23,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:23,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:23,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:23,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:23,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:24,205 INFO L124 PetriNetUnfolderBase]: 201/363 cut-off events. [2024-06-04 14:32:24,205 INFO L125 PetriNetUnfolderBase]: For 931/931 co-relation queries the response was YES. [2024-06-04 14:32:24,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 363 events. 201/363 cut-off events. For 931/931 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1227 event pairs, 49 based on Foata normal form. 3/365 useless extension candidates. Maximal degree in co-relation 1194. Up to 342 conditions per place. [2024-06-04 14:32:24,207 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-04 14:32:24,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 283 flow [2024-06-04 14:32:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:32:24,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:32:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-04 14:32:24,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:32:24,209 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 171 flow. Second operand 6 states and 72 transitions. [2024-06-04 14:32:24,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 283 flow [2024-06-04 14:32:24,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 253 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:24,211 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 174 flow [2024-06-04 14:32:24,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=174, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-04 14:32:24,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 14:32:24,211 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 174 flow [2024-06-04 14:32:24,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:24,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:24,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:24,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:32:24,212 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)] === [2024-06-04 14:32:24,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:24,213 INFO L85 PathProgramCache]: Analyzing trace with hash 636740918, now seen corresponding path program 1 times [2024-06-04 14:32:24,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:24,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463355476] [2024-06-04 14:32:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:24,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:24,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:24,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463355476] [2024-06-04 14:32:24,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463355476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:24,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:24,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586333555] [2024-06-04 14:32:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:24,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:24,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:24,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:24,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:24,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:24,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:24,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:24,968 INFO L124 PetriNetUnfolderBase]: 204/368 cut-off events. [2024-06-04 14:32:24,968 INFO L125 PetriNetUnfolderBase]: For 1112/1112 co-relation queries the response was YES. [2024-06-04 14:32:24,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 368 events. 204/368 cut-off events. For 1112/1112 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1263 event pairs, 49 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1247. Up to 340 conditions per place. [2024-06-04 14:32:24,970 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 38 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-04 14:32:24,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 326 flow [2024-06-04 14:32:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:32:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:32:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-04 14:32:24,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 14:32:24,973 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 174 flow. Second operand 6 states and 76 transitions. [2024-06-04 14:32:24,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 326 flow [2024-06-04 14:32:24,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 309 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:24,975 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 204 flow [2024-06-04 14:32:24,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-04 14:32:24,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-04 14:32:24,981 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 204 flow [2024-06-04 14:32:24,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:24,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:24,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:24,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:32:24,982 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)] === [2024-06-04 14:32:24,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash 293395208, now seen corresponding path program 2 times [2024-06-04 14:32:24,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:24,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601856773] [2024-06-04 14:32:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:24,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:25,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:25,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601856773] [2024-06-04 14:32:25,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601856773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:25,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:25,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:25,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639822692] [2024-06-04 14:32:25,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:25,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:25,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:25,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:25,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:25,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:25,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:25,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:25,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:25,758 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-04 14:32:25,759 INFO L125 PetriNetUnfolderBase]: For 1376/1376 co-relation queries the response was YES. [2024-06-04 14:32:25,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 365 events. 202/365 cut-off events. For 1376/1376 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1249 event pairs, 48 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1298. Up to 350 conditions per place. [2024-06-04 14:32:25,761 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-04 14:32:25,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 308 flow [2024-06-04 14:32:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:32:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:32:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-04 14:32:25,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 14:32:25,762 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 204 flow. Second operand 6 states and 70 transitions. [2024-06-04 14:32:25,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 308 flow [2024-06-04 14:32:25,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 296 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 14:32:25,765 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 213 flow [2024-06-04 14:32:25,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-06-04 14:32:25,766 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-04 14:32:25,766 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 213 flow [2024-06-04 14:32:25,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:25,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:25,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:32:25,767 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:25,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1965014730, now seen corresponding path program 1 times [2024-06-04 14:32:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:25,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565872145] [2024-06-04 14:32:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:25,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:26,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565872145] [2024-06-04 14:32:26,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565872145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:26,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:26,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:26,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235388607] [2024-06-04 14:32:26,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:26,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:26,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:26,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:26,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:26,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:26,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 213 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:26,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:26,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:26,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:26,746 INFO L124 PetriNetUnfolderBase]: 205/370 cut-off events. [2024-06-04 14:32:26,746 INFO L125 PetriNetUnfolderBase]: For 1723/1723 co-relation queries the response was YES. [2024-06-04 14:32:26,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 370 events. 205/370 cut-off events. For 1723/1723 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1269 event pairs, 48 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1364. Up to 325 conditions per place. [2024-06-04 14:32:26,748 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-04 14:32:26,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 399 flow [2024-06-04 14:32:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-04 14:32:26,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-04 14:32:26,750 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 213 flow. Second operand 7 states and 89 transitions. [2024-06-04 14:32:26,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 399 flow [2024-06-04 14:32:26,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 378 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:26,752 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 253 flow [2024-06-04 14:32:26,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-04 14:32:26,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-04 14:32:26,753 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 253 flow [2024-06-04 14:32:26,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:26,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:26,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:26,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:32:26,754 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)] === [2024-06-04 14:32:26,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1965164677, now seen corresponding path program 1 times [2024-06-04 14:32:26,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:26,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226195312] [2024-06-04 14:32:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:26,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:27,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226195312] [2024-06-04 14:32:27,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226195312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:27,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:27,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58225920] [2024-06-04 14:32:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:27,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:27,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:27,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:27,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:27,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:27,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:27,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:27,611 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-04 14:32:27,612 INFO L125 PetriNetUnfolderBase]: For 2350/2350 co-relation queries the response was YES. [2024-06-04 14:32:27,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 401 events. 224/401 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1390 event pairs, 51 based on Foata normal form. 3/403 useless extension candidates. Maximal degree in co-relation 1560. Up to 346 conditions per place. [2024-06-04 14:32:27,614 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-04 14:32:27,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 461 flow [2024-06-04 14:32:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-04 14:32:27,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:32:27,615 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 253 flow. Second operand 7 states and 91 transitions. [2024-06-04 14:32:27,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 461 flow [2024-06-04 14:32:27,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 438 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:27,619 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 304 flow [2024-06-04 14:32:27,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-04 14:32:27,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-04 14:32:27,620 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 304 flow [2024-06-04 14:32:27,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:27,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:27,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:27,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:32:27,620 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)] === [2024-06-04 14:32:27,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2130501046, now seen corresponding path program 2 times [2024-06-04 14:32:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694246143] [2024-06-04 14:32:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:27,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:28,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:28,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694246143] [2024-06-04 14:32:28,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694246143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:28,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:28,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:28,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97884368] [2024-06-04 14:32:28,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:28,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:28,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:28,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:28,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:28,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:28,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 304 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:28,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:28,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:28,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:28,677 INFO L124 PetriNetUnfolderBase]: 227/406 cut-off events. [2024-06-04 14:32:28,677 INFO L125 PetriNetUnfolderBase]: For 2708/2708 co-relation queries the response was YES. [2024-06-04 14:32:28,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 406 events. 227/406 cut-off events. For 2708/2708 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1415 event pairs, 50 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1703. Up to 376 conditions per place. [2024-06-04 14:32:28,680 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-04 14:32:28,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 462 flow [2024-06-04 14:32:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-04 14:32:28,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:32:28,681 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 304 flow. Second operand 7 states and 84 transitions. [2024-06-04 14:32:28,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 462 flow [2024-06-04 14:32:28,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 451 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 14:32:28,685 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 340 flow [2024-06-04 14:32:28,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-06-04 14:32:28,686 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 14:32:28,686 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 340 flow [2024-06-04 14:32:28,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:28,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:28,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:28,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:32:28,686 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)] === [2024-06-04 14:32:28,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:28,687 INFO L85 PathProgramCache]: Analyzing trace with hash 527668485, now seen corresponding path program 2 times [2024-06-04 14:32:28,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:28,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138520865] [2024-06-04 14:32:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:28,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:29,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:29,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138520865] [2024-06-04 14:32:29,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138520865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:29,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:29,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:29,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625302300] [2024-06-04 14:32:29,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:29,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:29,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:29,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:29,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:29,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 340 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:29,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:29,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:29,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:29,481 INFO L124 PetriNetUnfolderBase]: 236/421 cut-off events. [2024-06-04 14:32:29,482 INFO L125 PetriNetUnfolderBase]: For 3371/3371 co-relation queries the response was YES. [2024-06-04 14:32:29,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 421 events. 236/421 cut-off events. For 3371/3371 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1478 event pairs, 49 based on Foata normal form. 3/423 useless extension candidates. Maximal degree in co-relation 1818. Up to 397 conditions per place. [2024-06-04 14:32:29,484 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-04 14:32:29,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 500 flow [2024-06-04 14:32:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 14:32:29,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-04 14:32:29,485 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 340 flow. Second operand 7 states and 81 transitions. [2024-06-04 14:32:29,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 500 flow [2024-06-04 14:32:29,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 473 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:29,489 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 356 flow [2024-06-04 14:32:29,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-06-04 14:32:29,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-04 14:32:29,490 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 356 flow [2024-06-04 14:32:29,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:29,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:29,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:29,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:32:29,490 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)] === [2024-06-04 14:32:29,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash -408967995, now seen corresponding path program 3 times [2024-06-04 14:32:29,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:29,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173799186] [2024-06-04 14:32:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:29,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:30,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:30,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173799186] [2024-06-04 14:32:30,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173799186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:30,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:30,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736907085] [2024-06-04 14:32:30,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:30,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:30,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:30,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:30,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:30,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 356 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:30,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:30,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:30,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:30,370 INFO L124 PetriNetUnfolderBase]: 230/412 cut-off events. [2024-06-04 14:32:30,370 INFO L125 PetriNetUnfolderBase]: For 3671/3671 co-relation queries the response was YES. [2024-06-04 14:32:30,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 412 events. 230/412 cut-off events. For 3671/3671 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1441 event pairs, 47 based on Foata normal form. 3/414 useless extension candidates. Maximal degree in co-relation 1797. Up to 376 conditions per place. [2024-06-04 14:32:30,373 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 51 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2024-06-04 14:32:30,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 512 flow [2024-06-04 14:32:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-04 14:32:30,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-04 14:32:30,374 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 356 flow. Second operand 7 states and 85 transitions. [2024-06-04 14:32:30,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 512 flow [2024-06-04 14:32:30,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 485 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:30,378 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 360 flow [2024-06-04 14:32:30,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-04 14:32:30,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-04 14:32:30,378 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 360 flow [2024-06-04 14:32:30,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:30,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:30,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:30,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:32:30,379 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)] === [2024-06-04 14:32:30,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash -843722950, now seen corresponding path program 3 times [2024-06-04 14:32:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:30,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423985674] [2024-06-04 14:32:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:30,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:31,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423985674] [2024-06-04 14:32:31,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423985674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:31,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:31,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:31,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935347471] [2024-06-04 14:32:31,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:31,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:31,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:31,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:31,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:31,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 360 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:31,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:31,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:31,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:31,307 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-04 14:32:31,307 INFO L125 PetriNetUnfolderBase]: For 3863/3863 co-relation queries the response was YES. [2024-06-04 14:32:31,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 409 events. 228/409 cut-off events. For 3863/3863 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1435 event pairs, 47 based on Foata normal form. 1/409 useless extension candidates. Maximal degree in co-relation 1813. Up to 391 conditions per place. [2024-06-04 14:32:31,309 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-04 14:32:31,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 62 transitions, 496 flow [2024-06-04 14:32:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 14:32:31,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-04 14:32:31,311 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 360 flow. Second operand 7 states and 79 transitions. [2024-06-04 14:32:31,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 62 transitions, 496 flow [2024-06-04 14:32:31,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 453 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:31,314 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 342 flow [2024-06-04 14:32:31,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-06-04 14:32:31,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-04 14:32:31,316 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 342 flow [2024-06-04 14:32:31,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:31,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:31,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:31,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:32:31,316 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)] === [2024-06-04 14:32:31,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:31,317 INFO L85 PathProgramCache]: Analyzing trace with hash -21190711, now seen corresponding path program 1 times [2024-06-04 14:32:31,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:31,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417158240] [2024-06-04 14:32:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:31,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:32,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:32,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417158240] [2024-06-04 14:32:32,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417158240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:32,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:32,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:32,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946777874] [2024-06-04 14:32:32,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:32,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:32,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:32,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:32,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:32,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 342 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:32,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:32,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:32,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:32,508 INFO L124 PetriNetUnfolderBase]: 234/419 cut-off events. [2024-06-04 14:32:32,508 INFO L125 PetriNetUnfolderBase]: For 4399/4399 co-relation queries the response was YES. [2024-06-04 14:32:32,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 419 events. 234/419 cut-off events. For 4399/4399 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1490 event pairs, 46 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 1845. Up to 366 conditions per place. [2024-06-04 14:32:32,510 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-04 14:32:32,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 546 flow [2024-06-04 14:32:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-04 14:32:32,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-04 14:32:32,512 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 342 flow. Second operand 8 states and 99 transitions. [2024-06-04 14:32:32,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 546 flow [2024-06-04 14:32:32,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 511 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:32,519 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 355 flow [2024-06-04 14:32:32,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=355, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-04 14:32:32,520 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-04 14:32:32,520 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 355 flow [2024-06-04 14:32:32,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:32,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:32,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:32,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:32:32,522 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)] === [2024-06-04 14:32:32,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:32,522 INFO L85 PathProgramCache]: Analyzing trace with hash 785915425, now seen corresponding path program 1 times [2024-06-04 14:32:32,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:32,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505778387] [2024-06-04 14:32:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:32,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:33,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:33,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505778387] [2024-06-04 14:32:33,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505778387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:33,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:33,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:33,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093586237] [2024-06-04 14:32:33,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:33,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:33,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:33,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:33,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:33,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:33,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 355 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:33,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:33,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:33,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:33,648 INFO L124 PetriNetUnfolderBase]: 247/440 cut-off events. [2024-06-04 14:32:33,649 INFO L125 PetriNetUnfolderBase]: For 5101/5101 co-relation queries the response was YES. [2024-06-04 14:32:33,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 440 events. 247/440 cut-off events. For 5101/5101 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1607 event pairs, 47 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2003. Up to 331 conditions per place. [2024-06-04 14:32:33,651 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-04 14:32:33,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 609 flow [2024-06-04 14:32:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-04 14:32:33,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-04 14:32:33,653 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 355 flow. Second operand 8 states and 105 transitions. [2024-06-04 14:32:33,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 609 flow [2024-06-04 14:32:33,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 579 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:33,657 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 425 flow [2024-06-04 14:32:33,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=425, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-06-04 14:32:33,658 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-04 14:32:33,658 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 425 flow [2024-06-04 14:32:33,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:33,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:33,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:33,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:32:33,658 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)] === [2024-06-04 14:32:33,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:33,659 INFO L85 PathProgramCache]: Analyzing trace with hash 785915239, now seen corresponding path program 2 times [2024-06-04 14:32:33,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:33,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342830337] [2024-06-04 14:32:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:33,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:34,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:34,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342830337] [2024-06-04 14:32:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342830337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:34,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313739644] [2024-06-04 14:32:34,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:34,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:34,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:34,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:34,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 425 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:34,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:34,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:34,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:34,767 INFO L124 PetriNetUnfolderBase]: 250/445 cut-off events. [2024-06-04 14:32:34,768 INFO L125 PetriNetUnfolderBase]: For 5852/5852 co-relation queries the response was YES. [2024-06-04 14:32:34,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 445 events. 250/445 cut-off events. For 5852/5852 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1620 event pairs, 48 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 2188. Up to 379 conditions per place. [2024-06-04 14:32:34,770 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-04 14:32:34,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 693 flow [2024-06-04 14:32:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:34,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-04 14:32:34,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 14:32:34,772 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 425 flow. Second operand 8 states and 100 transitions. [2024-06-04 14:32:34,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 693 flow [2024-06-04 14:32:34,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 663 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:34,778 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 494 flow [2024-06-04 14:32:34,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=494, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-06-04 14:32:34,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-04 14:32:34,778 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 494 flow [2024-06-04 14:32:34,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:34,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:34,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:34,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:32:34,779 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)] === [2024-06-04 14:32:34,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash 790557055, now seen corresponding path program 2 times [2024-06-04 14:32:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294722535] [2024-06-04 14:32:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:35,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:35,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294722535] [2024-06-04 14:32:35,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294722535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:35,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:35,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:35,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473104915] [2024-06-04 14:32:35,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:35,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:35,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:35,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:35,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:35,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:35,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 494 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:35,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:35,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:35,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:35,849 INFO L124 PetriNetUnfolderBase]: 268/474 cut-off events. [2024-06-04 14:32:35,850 INFO L125 PetriNetUnfolderBase]: For 7022/7022 co-relation queries the response was YES. [2024-06-04 14:32:35,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 474 events. 268/474 cut-off events. For 7022/7022 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1751 event pairs, 47 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 2459. Up to 396 conditions per place. [2024-06-04 14:32:35,853 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2024-06-04 14:32:35,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 90 transitions, 787 flow [2024-06-04 14:32:35,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 14:32:35,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:32:35,855 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 494 flow. Second operand 8 states and 104 transitions. [2024-06-04 14:32:35,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 90 transitions, 787 flow [2024-06-04 14:32:35,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 760 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:35,863 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 562 flow [2024-06-04 14:32:35,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=562, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-04 14:32:35,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-04 14:32:35,864 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 562 flow [2024-06-04 14:32:35,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:35,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:35,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:35,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:32:35,865 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)] === [2024-06-04 14:32:35,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash 790556869, now seen corresponding path program 3 times [2024-06-04 14:32:35,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:35,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166367457] [2024-06-04 14:32:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:35,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:36,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:36,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166367457] [2024-06-04 14:32:36,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166367457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:36,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:36,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:36,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172109537] [2024-06-04 14:32:36,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:36,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:36,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:36,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:36,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 562 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:36,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:36,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:36,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:36,920 INFO L124 PetriNetUnfolderBase]: 274/484 cut-off events. [2024-06-04 14:32:36,920 INFO L125 PetriNetUnfolderBase]: For 8041/8041 co-relation queries the response was YES. [2024-06-04 14:32:36,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 484 events. 274/484 cut-off events. For 8041/8041 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1796 event pairs, 51 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2630. Up to 448 conditions per place. [2024-06-04 14:32:36,923 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-04 14:32:36,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 794 flow [2024-06-04 14:32:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-04 14:32:36,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:32:36,925 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 562 flow. Second operand 8 states and 94 transitions. [2024-06-04 14:32:36,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 794 flow [2024-06-04 14:32:36,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 771 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:36,933 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 611 flow [2024-06-04 14:32:36,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-04 14:32:36,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-04 14:32:36,934 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 611 flow [2024-06-04 14:32:36,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:36,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:36,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:36,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:32:36,935 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)] === [2024-06-04 14:32:36,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2022695997, now seen corresponding path program 3 times [2024-06-04 14:32:36,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:36,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081502296] [2024-06-04 14:32:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:36,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081502296] [2024-06-04 14:32:37,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081502296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:37,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:37,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:37,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133361195] [2024-06-04 14:32:37,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:37,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:37,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:37,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:37,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 611 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:37,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:37,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:37,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:38,038 INFO L124 PetriNetUnfolderBase]: 268/475 cut-off events. [2024-06-04 14:32:38,039 INFO L125 PetriNetUnfolderBase]: For 8489/8489 co-relation queries the response was YES. [2024-06-04 14:32:38,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2671 conditions, 475 events. 268/475 cut-off events. For 8489/8489 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1767 event pairs, 47 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2625. Up to 407 conditions per place. [2024-06-04 14:32:38,041 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 20 changer transitions 0/92 dead transitions. [2024-06-04 14:32:38,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 839 flow [2024-06-04 14:32:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-04 14:32:38,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-04 14:32:38,043 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 611 flow. Second operand 8 states and 101 transitions. [2024-06-04 14:32:38,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 839 flow [2024-06-04 14:32:38,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 791 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:38,050 INFO L231 Difference]: Finished difference. Result has 92 places, 76 transitions, 609 flow [2024-06-04 14:32:38,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=609, PETRI_PLACES=92, PETRI_TRANSITIONS=76} [2024-06-04 14:32:38,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-04 14:32:38,051 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 76 transitions, 609 flow [2024-06-04 14:32:38,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:38,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:38,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:38,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:32:38,051 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)] === [2024-06-04 14:32:38,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:38,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1515023327, now seen corresponding path program 4 times [2024-06-04 14:32:38,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:38,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543608408] [2024-06-04 14:32:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:38,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:38,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:38,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543608408] [2024-06-04 14:32:38,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543608408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:38,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:38,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:38,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299392840] [2024-06-04 14:32:38,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:38,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:38,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:38,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:38,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:38,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 76 transitions, 609 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:38,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:38,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:38,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:39,204 INFO L124 PetriNetUnfolderBase]: 271/480 cut-off events. [2024-06-04 14:32:39,204 INFO L125 PetriNetUnfolderBase]: For 8861/8861 co-relation queries the response was YES. [2024-06-04 14:32:39,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749 conditions, 480 events. 271/480 cut-off events. For 8861/8861 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1789 event pairs, 46 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2702. Up to 417 conditions per place. [2024-06-04 14:32:39,208 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 19 changer transitions 0/90 dead transitions. [2024-06-04 14:32:39,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 875 flow [2024-06-04 14:32:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 14:32:39,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:32:39,209 INFO L175 Difference]: Start difference. First operand has 92 places, 76 transitions, 609 flow. Second operand 8 states and 96 transitions. [2024-06-04 14:32:39,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 875 flow [2024-06-04 14:32:39,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 830 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:39,223 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 623 flow [2024-06-04 14:32:39,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=623, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2024-06-04 14:32:39,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-04 14:32:39,224 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 623 flow [2024-06-04 14:32:39,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:39,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:39,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:39,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:32:39,224 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)] === [2024-06-04 14:32:39,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash 963284095, now seen corresponding path program 5 times [2024-06-04 14:32:39,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:39,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296733029] [2024-06-04 14:32:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:39,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:40,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:40,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296733029] [2024-06-04 14:32:40,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296733029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:40,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:40,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:40,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806097137] [2024-06-04 14:32:40,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:40,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:40,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:40,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:40,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 623 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:40,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:40,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:40,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:40,512 INFO L124 PetriNetUnfolderBase]: 280/495 cut-off events. [2024-06-04 14:32:40,512 INFO L125 PetriNetUnfolderBase]: For 10137/10137 co-relation queries the response was YES. [2024-06-04 14:32:40,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2857 conditions, 495 events. 280/495 cut-off events. For 10137/10137 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1865 event pairs, 49 based on Foata normal form. 3/497 useless extension candidates. Maximal degree in co-relation 2809. Up to 460 conditions per place. [2024-06-04 14:32:40,518 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 77 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2024-06-04 14:32:40,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 92 transitions, 864 flow [2024-06-04 14:32:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 14:32:40,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:32:40,519 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 623 flow. Second operand 8 states and 92 transitions. [2024-06-04 14:32:40,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 92 transitions, 864 flow [2024-06-04 14:32:40,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 771 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:32:40,532 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 599 flow [2024-06-04 14:32:40,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=599, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-06-04 14:32:40,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-04 14:32:40,533 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 599 flow [2024-06-04 14:32:40,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:40,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:40,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:40,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:32:40,534 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)] === [2024-06-04 14:32:40,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash 206894765, now seen corresponding path program 6 times [2024-06-04 14:32:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586043048] [2024-06-04 14:32:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586043048] [2024-06-04 14:32:41,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586043048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:41,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:41,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397687037] [2024-06-04 14:32:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:41,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:41,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:41,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:41,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 599 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:41,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:41,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:41,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:41,651 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-04 14:32:41,652 INFO L125 PetriNetUnfolderBase]: For 10204/10204 co-relation queries the response was YES. [2024-06-04 14:32:41,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 486 events. 274/486 cut-off events. For 10204/10204 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1815 event pairs, 46 based on Foata normal form. 3/488 useless extension candidates. Maximal degree in co-relation 2635. Up to 439 conditions per place. [2024-06-04 14:32:41,655 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 76 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-04 14:32:41,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 823 flow [2024-06-04 14:32:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 14:32:41,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:32:41,657 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 599 flow. Second operand 8 states and 96 transitions. [2024-06-04 14:32:41,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 823 flow [2024-06-04 14:32:41,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 795 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:41,666 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 609 flow [2024-06-04 14:32:41,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=609, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-04 14:32:41,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-04 14:32:41,667 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 609 flow [2024-06-04 14:32:41,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:41,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:41,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:41,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:32:41,668 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)] === [2024-06-04 14:32:41,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash 215465893, now seen corresponding path program 1 times [2024-06-04 14:32:41,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:41,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974601490] [2024-06-04 14:32:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:42,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:42,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974601490] [2024-06-04 14:32:42,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974601490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:42,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:42,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:42,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107043752] [2024-06-04 14:32:42,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:42,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:42,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:42,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:42,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:42,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:42,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 609 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:42,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:42,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:42,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:42,783 INFO L124 PetriNetUnfolderBase]: 270/480 cut-off events. [2024-06-04 14:32:42,783 INFO L125 PetriNetUnfolderBase]: For 10270/10270 co-relation queries the response was YES. [2024-06-04 14:32:42,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 480 events. 270/480 cut-off events. For 10270/10270 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1789 event pairs, 47 based on Foata normal form. 2/481 useless extension candidates. Maximal degree in co-relation 2616. Up to 451 conditions per place. [2024-06-04 14:32:42,787 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 79 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-06-04 14:32:42,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 829 flow [2024-06-04 14:32:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 14:32:42,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 14:32:42,789 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 609 flow. Second operand 8 states and 90 transitions. [2024-06-04 14:32:42,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 829 flow [2024-06-04 14:32:42,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 782 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:42,799 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 611 flow [2024-06-04 14:32:42,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2024-06-04 14:32:42,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 14:32:42,800 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 611 flow [2024-06-04 14:32:42,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:42,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:42,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:42,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:32:42,801 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)] === [2024-06-04 14:32:42,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash -385606921, now seen corresponding path program 4 times [2024-06-04 14:32:42,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:42,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531042330] [2024-06-04 14:32:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:42,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:43,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:43,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531042330] [2024-06-04 14:32:43,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531042330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:43,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:43,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:43,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947572717] [2024-06-04 14:32:43,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:43,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:43,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:43,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:43,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:43,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:43,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 611 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:43,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:43,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:43,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:43,786 INFO L124 PetriNetUnfolderBase]: 271/482 cut-off events. [2024-06-04 14:32:43,786 INFO L125 PetriNetUnfolderBase]: For 10692/10692 co-relation queries the response was YES. [2024-06-04 14:32:43,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 482 events. 271/482 cut-off events. For 10692/10692 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1801 event pairs, 49 based on Foata normal form. 2/483 useless extension candidates. Maximal degree in co-relation 2625. Up to 458 conditions per place. [2024-06-04 14:32:43,794 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 79 selfloop transitions, 13 changer transitions 0/94 dead transitions. [2024-06-04 14:32:43,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 841 flow [2024-06-04 14:32:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 14:32:43,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 14:32:43,796 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 611 flow. Second operand 8 states and 89 transitions. [2024-06-04 14:32:43,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 841 flow [2024-06-04 14:32:43,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 801 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:43,808 INFO L231 Difference]: Finished difference. Result has 98 places, 85 transitions, 629 flow [2024-06-04 14:32:43,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=629, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2024-06-04 14:32:43,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-04 14:32:43,808 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 629 flow [2024-06-04 14:32:43,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2024-06-04 14:32:43,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:43,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:43,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:32:43,809 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)] === [2024-06-04 14:32:43,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:43,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1384532347, now seen corresponding path program 1 times [2024-06-04 14:32:43,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:43,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769693754] [2024-06-04 14:32:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:43,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:44,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:44,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769693754] [2024-06-04 14:32:44,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769693754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:44,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:44,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:44,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784909192] [2024-06-04 14:32:44,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:44,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:44,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:44,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:44,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 629 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:44,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:44,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:44,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:44,972 INFO L124 PetriNetUnfolderBase]: 268/477 cut-off events. [2024-06-04 14:32:44,973 INFO L125 PetriNetUnfolderBase]: For 10891/10891 co-relation queries the response was YES. [2024-06-04 14:32:44,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 477 events. 268/477 cut-off events. For 10891/10891 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1756 event pairs, 46 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2597. Up to 450 conditions per place. [2024-06-04 14:32:44,979 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 82 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-06-04 14:32:44,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 95 transitions, 837 flow [2024-06-04 14:32:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 14:32:44,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:32:44,981 INFO L175 Difference]: Start difference. First operand has 98 places, 85 transitions, 629 flow. Second operand 8 states and 88 transitions. [2024-06-04 14:32:44,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 95 transitions, 837 flow [2024-06-04 14:32:44,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 795 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:44,991 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 613 flow [2024-06-04 14:32:44,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=613, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-06-04 14:32:44,992 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-04 14:32:44,992 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 613 flow [2024-06-04 14:32:44,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:44,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:44,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:44,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:32:44,993 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)] === [2024-06-04 14:32:44,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1868749770, now seen corresponding path program 1 times [2024-06-04 14:32:44,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:44,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490764661] [2024-06-04 14:32:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:44,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:45,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:45,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490764661] [2024-06-04 14:32:45,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490764661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:45,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:45,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:45,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093924675] [2024-06-04 14:32:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:45,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:45,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:45,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:45,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 613 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:45,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:45,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:45,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:46,126 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-04 14:32:46,126 INFO L125 PetriNetUnfolderBase]: For 11654/11654 co-relation queries the response was YES. [2024-06-04 14:32:46,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 487 events. 274/487 cut-off events. For 11654/11654 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1824 event pairs, 47 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 2656. Up to 426 conditions per place. [2024-06-04 14:32:46,129 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-04 14:32:46,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 889 flow [2024-06-04 14:32:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 14:32:46,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 14:32:46,130 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 613 flow. Second operand 9 states and 109 transitions. [2024-06-04 14:32:46,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 889 flow [2024-06-04 14:32:46,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 863 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:46,141 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 647 flow [2024-06-04 14:32:46,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=647, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2024-06-04 14:32:46,142 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-04 14:32:46,142 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 647 flow [2024-06-04 14:32:46,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:46,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:46,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:46,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:32:46,143 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)] === [2024-06-04 14:32:46,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:46,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1406430428, now seen corresponding path program 2 times [2024-06-04 14:32:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:46,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533788846] [2024-06-04 14:32:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:46,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:47,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:47,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533788846] [2024-06-04 14:32:47,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533788846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:47,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:47,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:47,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110708262] [2024-06-04 14:32:47,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:47,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:47,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:47,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:47,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:47,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:47,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 647 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:47,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:47,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:47,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:47,284 INFO L124 PetriNetUnfolderBase]: 311/547 cut-off events. [2024-06-04 14:32:47,285 INFO L125 PetriNetUnfolderBase]: For 14953/14953 co-relation queries the response was YES. [2024-06-04 14:32:47,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3224 conditions, 547 events. 311/547 cut-off events. For 14953/14953 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2146 event pairs, 46 based on Foata normal form. 2/548 useless extension candidates. Maximal degree in co-relation 3172. Up to 302 conditions per place. [2024-06-04 14:32:47,288 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 73 selfloop transitions, 44 changer transitions 0/119 dead transitions. [2024-06-04 14:32:47,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 119 transitions, 1163 flow [2024-06-04 14:32:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-04 14:32:47,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-04 14:32:47,289 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 647 flow. Second operand 9 states and 123 transitions. [2024-06-04 14:32:47,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 119 transitions, 1163 flow [2024-06-04 14:32:47,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 119 transitions, 1121 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:47,302 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 840 flow [2024-06-04 14:32:47,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=840, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-06-04 14:32:47,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-04 14:32:47,303 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 840 flow [2024-06-04 14:32:47,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:47,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:47,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:47,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:32:47,304 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)] === [2024-06-04 14:32:47,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1406430583, now seen corresponding path program 1 times [2024-06-04 14:32:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:47,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392371950] [2024-06-04 14:32:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:47,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:48,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392371950] [2024-06-04 14:32:48,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392371950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:48,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:48,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:48,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990262287] [2024-06-04 14:32:48,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:48,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:48,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:48,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:48,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:48,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:48,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 840 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:48,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:48,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:48,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:48,647 INFO L124 PetriNetUnfolderBase]: 308/542 cut-off events. [2024-06-04 14:32:48,648 INFO L125 PetriNetUnfolderBase]: For 15708/15708 co-relation queries the response was YES. [2024-06-04 14:32:48,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 542 events. 308/542 cut-off events. For 15708/15708 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2097 event pairs, 57 based on Foata normal form. 1/542 useless extension candidates. Maximal degree in co-relation 3338. Up to 473 conditions per place. [2024-06-04 14:32:48,652 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 84 selfloop transitions, 26 changer transitions 0/112 dead transitions. [2024-06-04 14:32:48,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 112 transitions, 1111 flow [2024-06-04 14:32:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:32:48,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:32:48,653 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 840 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:32:48,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 112 transitions, 1111 flow [2024-06-04 14:32:48,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 112 transitions, 1050 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:48,673 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 853 flow [2024-06-04 14:32:48,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=853, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-04 14:32:48,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-04 14:32:48,674 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 853 flow [2024-06-04 14:32:48,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:48,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:48,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:48,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:32:48,675 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)] === [2024-06-04 14:32:48,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1865025120, now seen corresponding path program 3 times [2024-06-04 14:32:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267396603] [2024-06-04 14:32:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267396603] [2024-06-04 14:32:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267396603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:49,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:49,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:49,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144728371] [2024-06-04 14:32:49,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:49,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:49,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:49,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 853 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:49,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:49,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:49,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:49,805 INFO L124 PetriNetUnfolderBase]: 304/536 cut-off events. [2024-06-04 14:32:49,806 INFO L125 PetriNetUnfolderBase]: For 16096/16096 co-relation queries the response was YES. [2024-06-04 14:32:49,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3303 conditions, 536 events. 304/536 cut-off events. For 16096/16096 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2093 event pairs, 45 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3247. Up to 296 conditions per place. [2024-06-04 14:32:49,808 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 69 selfloop transitions, 47 changer transitions 0/118 dead transitions. [2024-06-04 14:32:49,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 1205 flow [2024-06-04 14:32:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-04 14:32:49,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-04 14:32:49,810 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 853 flow. Second operand 9 states and 121 transitions. [2024-06-04 14:32:49,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 1205 flow [2024-06-04 14:32:49,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 118 transitions, 1122 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:49,825 INFO L231 Difference]: Finished difference. Result has 114 places, 97 transitions, 869 flow [2024-06-04 14:32:49,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=869, PETRI_PLACES=114, PETRI_TRANSITIONS=97} [2024-06-04 14:32:49,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-04 14:32:49,826 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 97 transitions, 869 flow [2024-06-04 14:32:49,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:49,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:49,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:49,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:32:49,826 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)] === [2024-06-04 14:32:49,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1865024903, now seen corresponding path program 1 times [2024-06-04 14:32:49,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:49,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530861000] [2024-06-04 14:32:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:49,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:51,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530861000] [2024-06-04 14:32:51,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530861000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:51,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:51,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:51,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653007490] [2024-06-04 14:32:51,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:51,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:51,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:51,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:51,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:51,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:51,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 97 transitions, 869 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:51,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:51,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:51,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:51,527 INFO L124 PetriNetUnfolderBase]: 361/633 cut-off events. [2024-06-04 14:32:51,527 INFO L125 PetriNetUnfolderBase]: For 18570/18570 co-relation queries the response was YES. [2024-06-04 14:32:51,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 633 events. 361/633 cut-off events. For 18570/18570 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2591 event pairs, 67 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 3858. Up to 499 conditions per place. [2024-06-04 14:32:51,531 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 37 changer transitions 0/137 dead transitions. [2024-06-04 14:32:51,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 137 transitions, 1480 flow [2024-06-04 14:32:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:32:51,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:32:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 14:32:51,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 14:32:51,532 INFO L175 Difference]: Start difference. First operand has 114 places, 97 transitions, 869 flow. Second operand 10 states and 118 transitions. [2024-06-04 14:32:51,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 137 transitions, 1480 flow [2024-06-04 14:32:51,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 137 transitions, 1355 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:32:51,551 INFO L231 Difference]: Finished difference. Result has 121 places, 117 transitions, 1097 flow [2024-06-04 14:32:51,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1097, PETRI_PLACES=121, PETRI_TRANSITIONS=117} [2024-06-04 14:32:51,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-04 14:32:51,551 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 117 transitions, 1097 flow [2024-06-04 14:32:51,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:51,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:51,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:51,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:32:51,552 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)] === [2024-06-04 14:32:51,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1720932780, now seen corresponding path program 4 times [2024-06-04 14:32:51,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167039911] [2024-06-04 14:32:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:52,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167039911] [2024-06-04 14:32:52,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167039911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:52,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:52,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572273106] [2024-06-04 14:32:52,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:52,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:52,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:52,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:52,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:52,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 117 transitions, 1097 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:52,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:52,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:52,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:52,796 INFO L124 PetriNetUnfolderBase]: 370/647 cut-off events. [2024-06-04 14:32:52,796 INFO L125 PetriNetUnfolderBase]: For 20309/20311 co-relation queries the response was YES. [2024-06-04 14:32:52,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 647 events. 370/647 cut-off events. For 20309/20311 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2673 event pairs, 48 based on Foata normal form. 5/651 useless extension candidates. Maximal degree in co-relation 4060. Up to 536 conditions per place. [2024-06-04 14:32:52,801 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 30 changer transitions 0/136 dead transitions. [2024-06-04 14:32:52,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 136 transitions, 1433 flow [2024-06-04 14:32:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 14:32:52,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 14:32:52,820 INFO L175 Difference]: Start difference. First operand has 121 places, 117 transitions, 1097 flow. Second operand 9 states and 112 transitions. [2024-06-04 14:32:52,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 136 transitions, 1433 flow [2024-06-04 14:32:52,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 136 transitions, 1415 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-04 14:32:52,847 INFO L231 Difference]: Finished difference. Result has 129 places, 120 transitions, 1180 flow [2024-06-04 14:32:52,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1180, PETRI_PLACES=129, PETRI_TRANSITIONS=120} [2024-06-04 14:32:52,847 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-04 14:32:52,847 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 120 transitions, 1180 flow [2024-06-04 14:32:52,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:52,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:52,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:52,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:32:52,848 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)] === [2024-06-04 14:32:52,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1720932563, now seen corresponding path program 2 times [2024-06-04 14:32:52,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:52,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163596051] [2024-06-04 14:32:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:52,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:54,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:54,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163596051] [2024-06-04 14:32:54,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163596051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:54,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:54,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:54,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966681770] [2024-06-04 14:32:54,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:54,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:54,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:54,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:54,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:54,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:54,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 120 transitions, 1180 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:54,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:54,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:54,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:54,457 INFO L124 PetriNetUnfolderBase]: 382/667 cut-off events. [2024-06-04 14:32:54,457 INFO L125 PetriNetUnfolderBase]: For 22361/22363 co-relation queries the response was YES. [2024-06-04 14:32:54,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 667 events. 382/667 cut-off events. For 22361/22363 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2770 event pairs, 50 based on Foata normal form. 6/672 useless extension candidates. Maximal degree in co-relation 4309. Up to 561 conditions per place. [2024-06-04 14:32:54,462 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 31 changer transitions 0/140 dead transitions. [2024-06-04 14:32:54,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 140 transitions, 1540 flow [2024-06-04 14:32:54,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:54,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:54,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 14:32:54,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 14:32:54,464 INFO L175 Difference]: Start difference. First operand has 129 places, 120 transitions, 1180 flow. Second operand 9 states and 111 transitions. [2024-06-04 14:32:54,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 140 transitions, 1540 flow [2024-06-04 14:32:54,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 140 transitions, 1469 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:54,497 INFO L231 Difference]: Finished difference. Result has 131 places, 124 transitions, 1230 flow [2024-06-04 14:32:54,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1230, PETRI_PLACES=131, PETRI_TRANSITIONS=124} [2024-06-04 14:32:54,497 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-04 14:32:54,497 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 124 transitions, 1230 flow [2024-06-04 14:32:54,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:54,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:54,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:54,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:32:54,498 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)] === [2024-06-04 14:32:54,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:54,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1721134373, now seen corresponding path program 3 times [2024-06-04 14:32:54,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:54,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038559041] [2024-06-04 14:32:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:54,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038559041] [2024-06-04 14:32:56,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038559041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:56,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:56,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:56,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060757556] [2024-06-04 14:32:56,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:56,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:56,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:56,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:56,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:56,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:56,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 124 transitions, 1230 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:56,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:56,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:56,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:56,398 INFO L124 PetriNetUnfolderBase]: 394/687 cut-off events. [2024-06-04 14:32:56,398 INFO L125 PetriNetUnfolderBase]: For 23809/23811 co-relation queries the response was YES. [2024-06-04 14:32:56,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 687 events. 394/687 cut-off events. For 23809/23811 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2883 event pairs, 51 based on Foata normal form. 6/692 useless extension candidates. Maximal degree in co-relation 4485. Up to 557 conditions per place. [2024-06-04 14:32:56,403 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 39 changer transitions 0/144 dead transitions. [2024-06-04 14:32:56,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 144 transitions, 1606 flow [2024-06-04 14:32:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:56,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:32:56,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 14:32:56,405 INFO L175 Difference]: Start difference. First operand has 131 places, 124 transitions, 1230 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:32:56,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 144 transitions, 1606 flow [2024-06-04 14:32:56,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 144 transitions, 1523 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:56,434 INFO L231 Difference]: Finished difference. Result has 133 places, 128 transitions, 1292 flow [2024-06-04 14:32:56,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1292, PETRI_PLACES=133, PETRI_TRANSITIONS=128} [2024-06-04 14:32:56,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-04 14:32:56,434 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 128 transitions, 1292 flow [2024-06-04 14:32:56,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:56,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:56,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:56,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:32:56,435 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)] === [2024-06-04 14:32:56,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1262534318, now seen corresponding path program 5 times [2024-06-04 14:32:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:56,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617514072] [2024-06-04 14:32:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:56,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:57,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617514072] [2024-06-04 14:32:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617514072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:57,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:57,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187576598] [2024-06-04 14:32:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:57,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:57,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:57,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:57,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 128 transitions, 1292 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:57,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:57,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:57,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:57,794 INFO L124 PetriNetUnfolderBase]: 402/700 cut-off events. [2024-06-04 14:32:57,794 INFO L125 PetriNetUnfolderBase]: For 23986/23988 co-relation queries the response was YES. [2024-06-04 14:32:57,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4731 conditions, 700 events. 402/700 cut-off events. For 23986/23988 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2958 event pairs, 48 based on Foata normal form. 3/702 useless extension candidates. Maximal degree in co-relation 4663. Up to 563 conditions per place. [2024-06-04 14:32:57,799 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 37 changer transitions 0/149 dead transitions. [2024-06-04 14:32:57,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 149 transitions, 1744 flow [2024-06-04 14:32:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 14:32:57,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 14:32:57,803 INFO L175 Difference]: Start difference. First operand has 133 places, 128 transitions, 1292 flow. Second operand 9 states and 115 transitions. [2024-06-04 14:32:57,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 149 transitions, 1744 flow [2024-06-04 14:32:57,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 149 transitions, 1637 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:57,837 INFO L231 Difference]: Finished difference. Result has 136 places, 133 transitions, 1332 flow [2024-06-04 14:32:57,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1332, PETRI_PLACES=136, PETRI_TRANSITIONS=133} [2024-06-04 14:32:57,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-04 14:32:57,838 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 133 transitions, 1332 flow [2024-06-04 14:32:57,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:57,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:57,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:57,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:32:57,838 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)] === [2024-06-04 14:32:57,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1262539898, now seen corresponding path program 6 times [2024-06-04 14:32:57,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:57,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010267536] [2024-06-04 14:32:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:57,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:58,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:58,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010267536] [2024-06-04 14:32:58,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010267536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:58,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:58,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:58,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437929526] [2024-06-04 14:32:58,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:58,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:58,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:58,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:58,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:58,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:32:58,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 133 transitions, 1332 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:58,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:58,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:32:58,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:59,095 INFO L124 PetriNetUnfolderBase]: 418/726 cut-off events. [2024-06-04 14:32:59,095 INFO L125 PetriNetUnfolderBase]: For 27119/27121 co-relation queries the response was YES. [2024-06-04 14:32:59,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 726 events. 418/726 cut-off events. For 27119/27121 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3090 event pairs, 53 based on Foata normal form. 4/729 useless extension candidates. Maximal degree in co-relation 4952. Up to 565 conditions per place. [2024-06-04 14:32:59,101 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 43 changer transitions 0/155 dead transitions. [2024-06-04 14:32:59,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 155 transitions, 1825 flow [2024-06-04 14:32:59,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 14:32:59,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 14:32:59,102 INFO L175 Difference]: Start difference. First operand has 136 places, 133 transitions, 1332 flow. Second operand 9 states and 118 transitions. [2024-06-04 14:32:59,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 155 transitions, 1825 flow [2024-06-04 14:32:59,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 155 transitions, 1770 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:59,141 INFO L231 Difference]: Finished difference. Result has 142 places, 138 transitions, 1464 flow [2024-06-04 14:32:59,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1464, PETRI_PLACES=142, PETRI_TRANSITIONS=138} [2024-06-04 14:32:59,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-04 14:32:59,141 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 138 transitions, 1464 flow [2024-06-04 14:32:59,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:32:59,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:59,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:59,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:32:59,142 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)] === [2024-06-04 14:32:59,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:59,143 INFO L85 PathProgramCache]: Analyzing trace with hash 279119899, now seen corresponding path program 4 times [2024-06-04 14:32:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:59,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789631450] [2024-06-04 14:32:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:59,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:00,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:00,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789631450] [2024-06-04 14:33:00,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789631450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:00,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:00,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:00,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817228065] [2024-06-04 14:33:00,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:00,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:00,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:00,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:00,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 138 transitions, 1464 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:00,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:00,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:00,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:00,606 INFO L124 PetriNetUnfolderBase]: 424/737 cut-off events. [2024-06-04 14:33:00,607 INFO L125 PetriNetUnfolderBase]: For 29001/29001 co-relation queries the response was YES. [2024-06-04 14:33:00,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5262 conditions, 737 events. 424/737 cut-off events. For 29001/29001 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3143 event pairs, 78 based on Foata normal form. 2/738 useless extension candidates. Maximal degree in co-relation 5189. Up to 682 conditions per place. [2024-06-04 14:33:00,612 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 133 selfloop transitions, 19 changer transitions 0/154 dead transitions. [2024-06-04 14:33:00,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 154 transitions, 1832 flow [2024-06-04 14:33:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 14:33:00,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-04 14:33:00,614 INFO L175 Difference]: Start difference. First operand has 142 places, 138 transitions, 1464 flow. Second operand 9 states and 106 transitions. [2024-06-04 14:33:00,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 154 transitions, 1832 flow [2024-06-04 14:33:00,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 154 transitions, 1767 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:00,655 INFO L231 Difference]: Finished difference. Result has 146 places, 140 transitions, 1476 flow [2024-06-04 14:33:00,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1476, PETRI_PLACES=146, PETRI_TRANSITIONS=140} [2024-06-04 14:33:00,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-04 14:33:00,656 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 140 transitions, 1476 flow [2024-06-04 14:33:00,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:00,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:00,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:00,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:33:00,657 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)] === [2024-06-04 14:33:00,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash 28832653, now seen corresponding path program 5 times [2024-06-04 14:33:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829362187] [2024-06-04 14:33:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:01,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:01,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829362187] [2024-06-04 14:33:01,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829362187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:01,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815857316] [2024-06-04 14:33:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:01,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:01,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:01,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:01,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 140 transitions, 1476 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:01,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:01,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:01,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:01,827 INFO L124 PetriNetUnfolderBase]: 430/747 cut-off events. [2024-06-04 14:33:01,827 INFO L125 PetriNetUnfolderBase]: For 30425/30425 co-relation queries the response was YES. [2024-06-04 14:33:01,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5366 conditions, 747 events. 430/747 cut-off events. For 30425/30425 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3187 event pairs, 80 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 5291. Up to 708 conditions per place. [2024-06-04 14:33:01,833 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 15 changer transitions 0/153 dead transitions. [2024-06-04 14:33:01,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 1832 flow [2024-06-04 14:33:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:01,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 14:33:01,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 14:33:01,835 INFO L175 Difference]: Start difference. First operand has 146 places, 140 transitions, 1476 flow. Second operand 9 states and 100 transitions. [2024-06-04 14:33:01,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 1832 flow [2024-06-04 14:33:01,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 153 transitions, 1777 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:01,887 INFO L231 Difference]: Finished difference. Result has 148 places, 142 transitions, 1490 flow [2024-06-04 14:33:01,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1490, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2024-06-04 14:33:01,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-04 14:33:01,887 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 1490 flow [2024-06-04 14:33:01,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:01,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:01,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:01,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:33:01,888 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)] === [2024-06-04 14:33:01,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1919695397, now seen corresponding path program 6 times [2024-06-04 14:33:01,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:01,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278057700] [2024-06-04 14:33:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:01,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:02,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278057700] [2024-06-04 14:33:02,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278057700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:02,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:02,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:02,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406489417] [2024-06-04 14:33:02,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:02,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:02,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:03,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:03,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 1490 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:03,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:03,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:03,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:03,362 INFO L124 PetriNetUnfolderBase]: 436/757 cut-off events. [2024-06-04 14:33:03,362 INFO L125 PetriNetUnfolderBase]: For 31828/31828 co-relation queries the response was YES. [2024-06-04 14:33:03,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5461 conditions, 757 events. 436/757 cut-off events. For 31828/31828 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3244 event pairs, 80 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 5385. Up to 714 conditions per place. [2024-06-04 14:33:03,382 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 16 changer transitions 0/156 dead transitions. [2024-06-04 14:33:03,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 156 transitions, 1860 flow [2024-06-04 14:33:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:33:03,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:33:03,393 INFO L175 Difference]: Start difference. First operand has 148 places, 142 transitions, 1490 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:33:03,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 156 transitions, 1860 flow [2024-06-04 14:33:03,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 1807 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:03,492 INFO L231 Difference]: Finished difference. Result has 150 places, 144 transitions, 1512 flow [2024-06-04 14:33:03,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1512, PETRI_PLACES=150, PETRI_TRANSITIONS=144} [2024-06-04 14:33:03,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-04 14:33:03,493 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 144 transitions, 1512 flow [2024-06-04 14:33:03,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:03,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:03,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:03,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:33:03,494 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)] === [2024-06-04 14:33:03,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:03,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1919695614, now seen corresponding path program 7 times [2024-06-04 14:33:03,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:03,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268524670] [2024-06-04 14:33:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:03,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:04,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:04,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268524670] [2024-06-04 14:33:04,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268524670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:04,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:04,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:04,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095180634] [2024-06-04 14:33:04,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:04,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:04,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:04,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:04,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:04,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 144 transitions, 1512 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:04,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:04,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:04,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:04,625 INFO L124 PetriNetUnfolderBase]: 445/772 cut-off events. [2024-06-04 14:33:04,625 INFO L125 PetriNetUnfolderBase]: For 34140/34140 co-relation queries the response was YES. [2024-06-04 14:33:04,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 772 events. 445/772 cut-off events. For 34140/34140 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3331 event pairs, 82 based on Foata normal form. 3/774 useless extension candidates. Maximal degree in co-relation 5495. Up to 724 conditions per place. [2024-06-04 14:33:04,630 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 17 changer transitions 0/159 dead transitions. [2024-06-04 14:33:04,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 159 transitions, 1896 flow [2024-06-04 14:33:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:04,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:33:04,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 14:33:04,631 INFO L175 Difference]: Start difference. First operand has 150 places, 144 transitions, 1512 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:33:04,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 159 transitions, 1896 flow [2024-06-04 14:33:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 159 transitions, 1843 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:04,680 INFO L231 Difference]: Finished difference. Result has 152 places, 147 transitions, 1547 flow [2024-06-04 14:33:04,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=152, PETRI_TRANSITIONS=147} [2024-06-04 14:33:04,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-04 14:33:04,681 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 147 transitions, 1547 flow [2024-06-04 14:33:04,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:04,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:04,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:04,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:33:04,681 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)] === [2024-06-04 14:33:04,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash -237073877, now seen corresponding path program 7 times [2024-06-04 14:33:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207235112] [2024-06-04 14:33:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:05,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207235112] [2024-06-04 14:33:05,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207235112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:05,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:05,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:05,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549028706] [2024-06-04 14:33:05,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:05,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:06,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:06,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 147 transitions, 1547 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:06,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:06,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:06,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:06,385 INFO L124 PetriNetUnfolderBase]: 441/766 cut-off events. [2024-06-04 14:33:06,385 INFO L125 PetriNetUnfolderBase]: For 33187/33187 co-relation queries the response was YES. [2024-06-04 14:33:06,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 766 events. 441/766 cut-off events. For 33187/33187 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3303 event pairs, 74 based on Foata normal form. 2/767 useless extension candidates. Maximal degree in co-relation 5433. Up to 682 conditions per place. [2024-06-04 14:33:06,391 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 130 selfloop transitions, 27 changer transitions 0/159 dead transitions. [2024-06-04 14:33:06,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 159 transitions, 1889 flow [2024-06-04 14:33:06,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:33:06,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 14:33:06,392 INFO L175 Difference]: Start difference. First operand has 152 places, 147 transitions, 1547 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:33:06,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 159 transitions, 1889 flow [2024-06-04 14:33:06,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 1825 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:06,446 INFO L231 Difference]: Finished difference. Result has 154 places, 147 transitions, 1542 flow [2024-06-04 14:33:06,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1542, PETRI_PLACES=154, PETRI_TRANSITIONS=147} [2024-06-04 14:33:06,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-04 14:33:06,447 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 147 transitions, 1542 flow [2024-06-04 14:33:06,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:06,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:06,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:06,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:33:06,448 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)] === [2024-06-04 14:33:06,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2118569362, now seen corresponding path program 8 times [2024-06-04 14:33:06,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:06,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300539619] [2024-06-04 14:33:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:07,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:07,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300539619] [2024-06-04 14:33:07,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300539619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:07,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:07,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875065697] [2024-06-04 14:33:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:07,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:07,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:07,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:07,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 147 transitions, 1542 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:07,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:07,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:07,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:07,742 INFO L124 PetriNetUnfolderBase]: 449/779 cut-off events. [2024-06-04 14:33:07,742 INFO L125 PetriNetUnfolderBase]: For 34944/34944 co-relation queries the response was YES. [2024-06-04 14:33:07,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5677 conditions, 779 events. 449/779 cut-off events. For 34944/34944 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3382 event pairs, 70 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 5598. Up to 677 conditions per place. [2024-06-04 14:33:07,748 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 133 selfloop transitions, 32 changer transitions 0/167 dead transitions. [2024-06-04 14:33:07,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 167 transitions, 2180 flow [2024-06-04 14:33:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:07,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:33:07,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:33:07,749 INFO L175 Difference]: Start difference. First operand has 154 places, 147 transitions, 1542 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:33:07,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 167 transitions, 2180 flow [2024-06-04 14:33:07,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 2105 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:07,804 INFO L231 Difference]: Finished difference. Result has 157 places, 154 transitions, 1668 flow [2024-06-04 14:33:07,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1668, PETRI_PLACES=157, PETRI_TRANSITIONS=154} [2024-06-04 14:33:07,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-04 14:33:07,805 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 154 transitions, 1668 flow [2024-06-04 14:33:07,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:07,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:07,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:07,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:33:07,806 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)] === [2024-06-04 14:33:07,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash 931088276, now seen corresponding path program 9 times [2024-06-04 14:33:07,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:07,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255591309] [2024-06-04 14:33:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:07,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:08,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:08,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255591309] [2024-06-04 14:33:08,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255591309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:08,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:08,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548732726] [2024-06-04 14:33:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:08,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:08,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:08,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:08,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:08,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 154 transitions, 1668 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:08,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:08,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:08,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:09,226 INFO L124 PetriNetUnfolderBase]: 447/776 cut-off events. [2024-06-04 14:33:09,226 INFO L125 PetriNetUnfolderBase]: For 35808/35808 co-relation queries the response was YES. [2024-06-04 14:33:09,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5694 conditions, 776 events. 447/776 cut-off events. For 35808/35808 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3357 event pairs, 71 based on Foata normal form. 1/776 useless extension candidates. Maximal degree in co-relation 5613. Up to 675 conditions per place. [2024-06-04 14:33:09,232 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 34 changer transitions 0/167 dead transitions. [2024-06-04 14:33:09,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 167 transitions, 2114 flow [2024-06-04 14:33:09,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:33:09,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:33:09,233 INFO L175 Difference]: Start difference. First operand has 157 places, 154 transitions, 1668 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:33:09,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 167 transitions, 2114 flow [2024-06-04 14:33:09,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 167 transitions, 2028 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:09,295 INFO L231 Difference]: Finished difference. Result has 161 places, 154 transitions, 1655 flow [2024-06-04 14:33:09,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1655, PETRI_PLACES=161, PETRI_TRANSITIONS=154} [2024-06-04 14:33:09,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-04 14:33:09,295 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 154 transitions, 1655 flow [2024-06-04 14:33:09,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:09,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:09,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:09,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:33:09,296 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)] === [2024-06-04 14:33:09,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:09,297 INFO L85 PathProgramCache]: Analyzing trace with hash -236872284, now seen corresponding path program 10 times [2024-06-04 14:33:09,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:09,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772874167] [2024-06-04 14:33:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:09,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:10,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:10,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772874167] [2024-06-04 14:33:10,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772874167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:10,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:10,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:10,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794149468] [2024-06-04 14:33:10,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:10,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:10,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:10,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:10,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 154 transitions, 1655 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:10,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:10,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:10,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:10,543 INFO L124 PetriNetUnfolderBase]: 441/767 cut-off events. [2024-06-04 14:33:10,543 INFO L125 PetriNetUnfolderBase]: For 36002/36002 co-relation queries the response was YES. [2024-06-04 14:33:10,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5539 conditions, 767 events. 441/767 cut-off events. For 36002/36002 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3321 event pairs, 75 based on Foata normal form. 3/769 useless extension candidates. Maximal degree in co-relation 5457. Up to 707 conditions per place. [2024-06-04 14:33:10,549 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 20 changer transitions 0/168 dead transitions. [2024-06-04 14:33:10,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 168 transitions, 2021 flow [2024-06-04 14:33:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 14:33:10,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 14:33:10,550 INFO L175 Difference]: Start difference. First operand has 161 places, 154 transitions, 1655 flow. Second operand 9 states and 107 transitions. [2024-06-04 14:33:10,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 168 transitions, 2021 flow [2024-06-04 14:33:10,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 168 transitions, 1940 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:10,610 INFO L231 Difference]: Finished difference. Result has 163 places, 154 transitions, 1620 flow [2024-06-04 14:33:10,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1620, PETRI_PLACES=163, PETRI_TRANSITIONS=154} [2024-06-04 14:33:10,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-04 14:33:10,613 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 154 transitions, 1620 flow [2024-06-04 14:33:10,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:10,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:10,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:10,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:33:10,614 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)] === [2024-06-04 14:33:10,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:10,614 INFO L85 PathProgramCache]: Analyzing trace with hash 837792129, now seen corresponding path program 8 times [2024-06-04 14:33:10,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:10,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755938372] [2024-06-04 14:33:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:10,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:11,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:11,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755938372] [2024-06-04 14:33:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755938372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:11,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:11,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:11,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543461944] [2024-06-04 14:33:11,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:11,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:11,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:11,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:11,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 154 transitions, 1620 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:11,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:11,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:11,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:12,211 INFO L124 PetriNetUnfolderBase]: 437/761 cut-off events. [2024-06-04 14:33:12,211 INFO L125 PetriNetUnfolderBase]: For 34338/34338 co-relation queries the response was YES. [2024-06-04 14:33:12,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5405 conditions, 761 events. 437/761 cut-off events. For 34338/34338 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3293 event pairs, 48 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 5322. Up to 546 conditions per place. [2024-06-04 14:33:12,217 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 72 changer transitions 0/191 dead transitions. [2024-06-04 14:33:12,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 191 transitions, 2196 flow [2024-06-04 14:33:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:33:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:33:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 164 transitions. [2024-06-04 14:33:12,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-04 14:33:12,218 INFO L175 Difference]: Start difference. First operand has 163 places, 154 transitions, 1620 flow. Second operand 14 states and 164 transitions. [2024-06-04 14:33:12,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 191 transitions, 2196 flow [2024-06-04 14:33:12,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 191 transitions, 2152 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:12,273 INFO L231 Difference]: Finished difference. Result has 175 places, 167 transitions, 1915 flow [2024-06-04 14:33:12,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1915, PETRI_PLACES=175, PETRI_TRANSITIONS=167} [2024-06-04 14:33:12,273 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-04 14:33:12,273 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 167 transitions, 1915 flow [2024-06-04 14:33:12,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 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) [2024-06-04 14:33:12,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:12,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:12,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:33:12,274 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)] === [2024-06-04 14:33:12,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:12,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1110470218, now seen corresponding path program 1 times [2024-06-04 14:33:12,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:12,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450294058] [2024-06-04 14:33:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:12,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:13,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:13,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450294058] [2024-06-04 14:33:13,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450294058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:13,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:13,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:13,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915610256] [2024-06-04 14:33:13,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:13,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:13,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:13,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:13,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:13,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:13,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 167 transitions, 1915 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:13,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:13,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:13,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:13,877 INFO L124 PetriNetUnfolderBase]: 448/782 cut-off events. [2024-06-04 14:33:13,878 INFO L125 PetriNetUnfolderBase]: For 38535/38535 co-relation queries the response was YES. [2024-06-04 14:33:13,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5878 conditions, 782 events. 448/782 cut-off events. For 38535/38535 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3427 event pairs, 45 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 5789. Up to 682 conditions per place. [2024-06-04 14:33:13,883 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 162 selfloop transitions, 24 changer transitions 0/188 dead transitions. [2024-06-04 14:33:13,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 188 transitions, 2465 flow [2024-06-04 14:33:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 14:33:13,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 14:33:13,885 INFO L175 Difference]: Start difference. First operand has 175 places, 167 transitions, 1915 flow. Second operand 10 states and 118 transitions. [2024-06-04 14:33:13,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 188 transitions, 2465 flow [2024-06-04 14:33:13,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 188 transitions, 2378 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:13,959 INFO L231 Difference]: Finished difference. Result has 180 places, 169 transitions, 1920 flow [2024-06-04 14:33:13,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1920, PETRI_PLACES=180, PETRI_TRANSITIONS=169} [2024-06-04 14:33:13,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-04 14:33:13,959 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 169 transitions, 1920 flow [2024-06-04 14:33:13,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:13,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:13,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:13,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:33:13,960 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)] === [2024-06-04 14:33:13,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:13,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2099468522, now seen corresponding path program 2 times [2024-06-04 14:33:13,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:13,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859158606] [2024-06-04 14:33:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:13,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:15,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:15,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859158606] [2024-06-04 14:33:15,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859158606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:15,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:15,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:15,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14077612] [2024-06-04 14:33:15,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:15,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:15,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:15,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:15,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:15,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 169 transitions, 1920 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-04 14:33:15,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:15,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:15,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:15,593 INFO L124 PetriNetUnfolderBase]: 445/777 cut-off events. [2024-06-04 14:33:15,593 INFO L125 PetriNetUnfolderBase]: For 37616/37616 co-relation queries the response was YES. [2024-06-04 14:33:15,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 777 events. 445/777 cut-off events. For 37616/37616 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3391 event pairs, 61 based on Foata normal form. 2/778 useless extension candidates. Maximal degree in co-relation 5670. Up to 706 conditions per place. [2024-06-04 14:33:15,599 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 161 selfloop transitions, 22 changer transitions 0/185 dead transitions. [2024-06-04 14:33:15,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 185 transitions, 2328 flow [2024-06-04 14:33:15,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:33:15,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:33:15,604 INFO L175 Difference]: Start difference. First operand has 180 places, 169 transitions, 1920 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:33:15,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 185 transitions, 2328 flow [2024-06-04 14:33:15,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 185 transitions, 2264 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:15,674 INFO L231 Difference]: Finished difference. Result has 183 places, 169 transitions, 1904 flow [2024-06-04 14:33:15,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1904, PETRI_PLACES=183, PETRI_TRANSITIONS=169} [2024-06-04 14:33:15,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 14:33:15,675 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 169 transitions, 1904 flow [2024-06-04 14:33:15,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-04 14:33:15,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:15,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:15,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:33:15,675 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)] === [2024-06-04 14:33:15,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2096667052, now seen corresponding path program 1 times [2024-06-04 14:33:15,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:15,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169187525] [2024-06-04 14:33:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:15,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:17,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169187525] [2024-06-04 14:33:17,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169187525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:17,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:17,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976042048] [2024-06-04 14:33:17,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:17,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:17,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:17,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:17,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 169 transitions, 1904 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:17,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:17,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:17,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:17,715 INFO L124 PetriNetUnfolderBase]: 487/849 cut-off events. [2024-06-04 14:33:17,716 INFO L125 PetriNetUnfolderBase]: For 44229/44229 co-relation queries the response was YES. [2024-06-04 14:33:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 849 events. 487/849 cut-off events. For 44229/44229 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3835 event pairs, 86 based on Foata normal form. 4/852 useless extension candidates. Maximal degree in co-relation 6164. Up to 777 conditions per place. [2024-06-04 14:33:17,722 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 175 selfloop transitions, 23 changer transitions 0/200 dead transitions. [2024-06-04 14:33:17,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 200 transitions, 2624 flow [2024-06-04 14:33:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:33:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:33:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:33:17,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 14:33:17,724 INFO L175 Difference]: Start difference. First operand has 183 places, 169 transitions, 1904 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:33:17,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 200 transitions, 2624 flow [2024-06-04 14:33:17,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 200 transitions, 2565 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:17,795 INFO L231 Difference]: Finished difference. Result has 189 places, 182 transitions, 2098 flow [2024-06-04 14:33:17,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2098, PETRI_PLACES=189, PETRI_TRANSITIONS=182} [2024-06-04 14:33:17,795 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-04 14:33:17,795 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 182 transitions, 2098 flow [2024-06-04 14:33:17,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:17,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:17,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:17,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:33:17,796 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)] === [2024-06-04 14:33:17,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:17,796 INFO L85 PathProgramCache]: Analyzing trace with hash -649496358, now seen corresponding path program 2 times [2024-06-04 14:33:17,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:17,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291097664] [2024-06-04 14:33:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:17,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:18,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:18,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291097664] [2024-06-04 14:33:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291097664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:18,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:18,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12121411] [2024-06-04 14:33:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:18,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:18,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:18,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:18,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:19,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:19,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 182 transitions, 2098 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:19,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:19,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:19,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:19,550 INFO L124 PetriNetUnfolderBase]: 523/906 cut-off events. [2024-06-04 14:33:19,551 INFO L125 PetriNetUnfolderBase]: For 51821/51821 co-relation queries the response was YES. [2024-06-04 14:33:19,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7066 conditions, 906 events. 523/906 cut-off events. For 51821/51821 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4164 event pairs, 49 based on Foata normal form. 2/907 useless extension candidates. Maximal degree in co-relation 6972. Up to 503 conditions per place. [2024-06-04 14:33:19,557 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 74 changer transitions 0/217 dead transitions. [2024-06-04 14:33:19,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 217 transitions, 3086 flow [2024-06-04 14:33:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-04 14:33:19,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-04 14:33:19,560 INFO L175 Difference]: Start difference. First operand has 189 places, 182 transitions, 2098 flow. Second operand 10 states and 133 transitions. [2024-06-04 14:33:19,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 217 transitions, 3086 flow [2024-06-04 14:33:19,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 217 transitions, 2995 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:19,644 INFO L231 Difference]: Finished difference. Result has 196 places, 192 transitions, 2381 flow [2024-06-04 14:33:19,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2381, PETRI_PLACES=196, PETRI_TRANSITIONS=192} [2024-06-04 14:33:19,645 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-04 14:33:19,648 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 192 transitions, 2381 flow [2024-06-04 14:33:19,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:19,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:19,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:19,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:33:19,650 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)] === [2024-06-04 14:33:19,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1742032602, now seen corresponding path program 3 times [2024-06-04 14:33:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:19,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675273399] [2024-06-04 14:33:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:19,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:20,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:20,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675273399] [2024-06-04 14:33:20,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675273399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:20,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:20,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:20,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544878121] [2024-06-04 14:33:20,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:20,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:20,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:20,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:20,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 192 transitions, 2381 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:20,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:20,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:20,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:21,411 INFO L124 PetriNetUnfolderBase]: 549/949 cut-off events. [2024-06-04 14:33:21,411 INFO L125 PetriNetUnfolderBase]: For 59468/59468 co-relation queries the response was YES. [2024-06-04 14:33:21,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7782 conditions, 949 events. 549/949 cut-off events. For 59468/59468 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4375 event pairs, 59 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 7686. Up to 376 conditions per place. [2024-06-04 14:33:21,418 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 96 changer transitions 0/222 dead transitions. [2024-06-04 14:33:21,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 222 transitions, 3337 flow [2024-06-04 14:33:21,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-04 14:33:21,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-04 14:33:21,419 INFO L175 Difference]: Start difference. First operand has 196 places, 192 transitions, 2381 flow. Second operand 10 states and 137 transitions. [2024-06-04 14:33:21,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 222 transitions, 3337 flow [2024-06-04 14:33:21,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 222 transitions, 3193 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:21,522 INFO L231 Difference]: Finished difference. Result has 203 places, 200 transitions, 2628 flow [2024-06-04 14:33:21,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2628, PETRI_PLACES=203, PETRI_TRANSITIONS=200} [2024-06-04 14:33:21,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-04 14:33:21,522 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 200 transitions, 2628 flow [2024-06-04 14:33:21,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:21,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:21,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:21,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:33:21,523 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)] === [2024-06-04 14:33:21,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1981380842, now seen corresponding path program 3 times [2024-06-04 14:33:21,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:21,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224806177] [2024-06-04 14:33:21,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:21,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:23,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:23,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224806177] [2024-06-04 14:33:23,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224806177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:23,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:23,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:23,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009031228] [2024-06-04 14:33:23,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:23,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:23,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:23,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:23,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:23,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:23,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 200 transitions, 2628 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:23,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:23,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:23,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:23,417 INFO L124 PetriNetUnfolderBase]: 553/956 cut-off events. [2024-06-04 14:33:23,417 INFO L125 PetriNetUnfolderBase]: For 62276/62276 co-relation queries the response was YES. [2024-06-04 14:33:23,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8054 conditions, 956 events. 553/956 cut-off events. For 62276/62276 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4413 event pairs, 80 based on Foata normal form. 2/957 useless extension candidates. Maximal degree in co-relation 7955. Up to 850 conditions per place. [2024-06-04 14:33:23,425 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 39 changer transitions 0/216 dead transitions. [2024-06-04 14:33:23,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 216 transitions, 3114 flow [2024-06-04 14:33:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:33:23,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 14:33:23,426 INFO L175 Difference]: Start difference. First operand has 203 places, 200 transitions, 2628 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:33:23,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 216 transitions, 3114 flow [2024-06-04 14:33:23,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 216 transitions, 3048 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:23,529 INFO L231 Difference]: Finished difference. Result has 209 places, 201 transitions, 2666 flow [2024-06-04 14:33:23,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2666, PETRI_PLACES=209, PETRI_TRANSITIONS=201} [2024-06-04 14:33:23,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-04 14:33:23,530 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 201 transitions, 2666 flow [2024-06-04 14:33:23,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:23,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:23,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:23,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:33:23,531 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)] === [2024-06-04 14:33:23,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:23,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1981375882, now seen corresponding path program 4 times [2024-06-04 14:33:23,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:23,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506618754] [2024-06-04 14:33:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:23,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506618754] [2024-06-04 14:33:24,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506618754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:24,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:24,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:24,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335859812] [2024-06-04 14:33:24,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:24,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:24,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:24,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:24,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 201 transitions, 2666 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:24,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:24,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:24,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:25,247 INFO L124 PetriNetUnfolderBase]: 608/1048 cut-off events. [2024-06-04 14:33:25,247 INFO L125 PetriNetUnfolderBase]: For 68077/68077 co-relation queries the response was YES. [2024-06-04 14:33:25,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8746 conditions, 1048 events. 608/1048 cut-off events. For 68077/68077 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4961 event pairs, 100 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 8645. Up to 761 conditions per place. [2024-06-04 14:33:25,257 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 61 changer transitions 0/245 dead transitions. [2024-06-04 14:33:25,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 245 transitions, 3619 flow [2024-06-04 14:33:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:33:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:33:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:33:25,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:33:25,259 INFO L175 Difference]: Start difference. First operand has 209 places, 201 transitions, 2666 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:33:25,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 245 transitions, 3619 flow [2024-06-04 14:33:25,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 245 transitions, 3513 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:25,377 INFO L231 Difference]: Finished difference. Result has 216 places, 222 transitions, 3034 flow [2024-06-04 14:33:25,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3034, PETRI_PLACES=216, PETRI_TRANSITIONS=222} [2024-06-04 14:33:25,377 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-04 14:33:25,377 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 222 transitions, 3034 flow [2024-06-04 14:33:25,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:25,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:25,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:25,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:33:25,378 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)] === [2024-06-04 14:33:25,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:25,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1815741708, now seen corresponding path program 4 times [2024-06-04 14:33:25,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:25,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254126553] [2024-06-04 14:33:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:25,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:26,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:26,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254126553] [2024-06-04 14:33:26,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254126553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:26,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:26,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:26,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766458684] [2024-06-04 14:33:26,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:26,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:26,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:26,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:26,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 222 transitions, 3034 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-04 14:33:26,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:26,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:26,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:26,800 INFO L124 PetriNetUnfolderBase]: 612/1056 cut-off events. [2024-06-04 14:33:26,800 INFO L125 PetriNetUnfolderBase]: For 70337/70337 co-relation queries the response was YES. [2024-06-04 14:33:26,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9062 conditions, 1056 events. 612/1056 cut-off events. For 70337/70337 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5019 event pairs, 106 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 8956. Up to 997 conditions per place. [2024-06-04 14:33:26,815 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 207 selfloop transitions, 25 changer transitions 0/234 dead transitions. [2024-06-04 14:33:26,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 234 transitions, 3546 flow [2024-06-04 14:33:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 14:33:26,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 14:33:26,816 INFO L175 Difference]: Start difference. First operand has 216 places, 222 transitions, 3034 flow. Second operand 9 states and 103 transitions. [2024-06-04 14:33:26,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 234 transitions, 3546 flow [2024-06-04 14:33:26,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 234 transitions, 3484 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:26,945 INFO L231 Difference]: Finished difference. Result has 221 places, 223 transitions, 3050 flow [2024-06-04 14:33:26,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3050, PETRI_PLACES=221, PETRI_TRANSITIONS=223} [2024-06-04 14:33:26,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-04 14:33:26,946 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 223 transitions, 3050 flow [2024-06-04 14:33:26,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-04 14:33:26,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:26,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:26,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:33:26,947 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)] === [2024-06-04 14:33:26,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash -477355036, now seen corresponding path program 1 times [2024-06-04 14:33:26,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:26,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242894191] [2024-06-04 14:33:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:26,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:27,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:27,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242894191] [2024-06-04 14:33:27,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242894191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:27,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:27,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600072987] [2024-06-04 14:33:27,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:27,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:27,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:27,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:28,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:28,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 223 transitions, 3050 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:28,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:28,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:28,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:28,459 INFO L124 PetriNetUnfolderBase]: 619/1069 cut-off events. [2024-06-04 14:33:28,459 INFO L125 PetriNetUnfolderBase]: For 72726/72726 co-relation queries the response was YES. [2024-06-04 14:33:28,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9163 conditions, 1069 events. 619/1069 cut-off events. For 72726/72726 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5116 event pairs, 74 based on Foata normal form. 2/1070 useless extension candidates. Maximal degree in co-relation 9055. Up to 977 conditions per place. [2024-06-04 14:33:28,469 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 208 selfloop transitions, 33 changer transitions 0/243 dead transitions. [2024-06-04 14:33:28,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 243 transitions, 3618 flow [2024-06-04 14:33:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:33:28,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:33:28,473 INFO L175 Difference]: Start difference. First operand has 221 places, 223 transitions, 3050 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:33:28,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 243 transitions, 3618 flow [2024-06-04 14:33:28,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 243 transitions, 3550 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:28,619 INFO L231 Difference]: Finished difference. Result has 226 places, 230 transitions, 3151 flow [2024-06-04 14:33:28,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3151, PETRI_PLACES=226, PETRI_TRANSITIONS=230} [2024-06-04 14:33:28,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-04 14:33:28,620 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 230 transitions, 3151 flow [2024-06-04 14:33:28,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:28,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:28,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:28,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:33:28,620 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)] === [2024-06-04 14:33:28,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash -483857224, now seen corresponding path program 5 times [2024-06-04 14:33:28,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:28,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086314053] [2024-06-04 14:33:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:28,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:29,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086314053] [2024-06-04 14:33:29,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086314053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:29,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:29,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034760461] [2024-06-04 14:33:29,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:29,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:29,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:29,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:29,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 230 transitions, 3151 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:29,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:29,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:29,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:30,226 INFO L124 PetriNetUnfolderBase]: 724/1239 cut-off events. [2024-06-04 14:33:30,226 INFO L125 PetriNetUnfolderBase]: For 109840/109840 co-relation queries the response was YES. [2024-06-04 14:33:30,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11695 conditions, 1239 events. 724/1239 cut-off events. For 109840/109840 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6126 event pairs, 87 based on Foata normal form. 6/1244 useless extension candidates. Maximal degree in co-relation 11583. Up to 871 conditions per place. [2024-06-04 14:33:30,238 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 66 changer transitions 0/274 dead transitions. [2024-06-04 14:33:30,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 274 transitions, 4637 flow [2024-06-04 14:33:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-04 14:33:30,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 14:33:30,239 INFO L175 Difference]: Start difference. First operand has 226 places, 230 transitions, 3151 flow. Second operand 10 states and 135 transitions. [2024-06-04 14:33:30,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 274 transitions, 4637 flow [2024-06-04 14:33:30,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 274 transitions, 4590 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:30,446 INFO L231 Difference]: Finished difference. Result has 233 places, 249 transitions, 3724 flow [2024-06-04 14:33:30,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3724, PETRI_PLACES=233, PETRI_TRANSITIONS=249} [2024-06-04 14:33:30,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-04 14:33:30,447 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 249 transitions, 3724 flow [2024-06-04 14:33:30,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:30,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:30,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:30,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:33:30,447 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)] === [2024-06-04 14:33:30,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1815736748, now seen corresponding path program 6 times [2024-06-04 14:33:30,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:30,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211056819] [2024-06-04 14:33:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:30,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:31,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211056819] [2024-06-04 14:33:31,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211056819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:31,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:31,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:31,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943788892] [2024-06-04 14:33:31,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:31,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:31,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:31,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:31,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:31,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 249 transitions, 3724 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:31,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:31,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:31,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:32,091 INFO L124 PetriNetUnfolderBase]: 722/1237 cut-off events. [2024-06-04 14:33:32,092 INFO L125 PetriNetUnfolderBase]: For 108234/108234 co-relation queries the response was YES. [2024-06-04 14:33:32,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11732 conditions, 1237 events. 722/1237 cut-off events. For 108234/108234 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6112 event pairs, 87 based on Foata normal form. 6/1242 useless extension candidates. Maximal degree in co-relation 11617. Up to 875 conditions per place. [2024-06-04 14:33:32,105 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 72 changer transitions 0/273 dead transitions. [2024-06-04 14:33:32,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 273 transitions, 4660 flow [2024-06-04 14:33:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 14:33:32,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 14:33:32,107 INFO L175 Difference]: Start difference. First operand has 233 places, 249 transitions, 3724 flow. Second operand 10 states and 132 transitions. [2024-06-04 14:33:32,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 273 transitions, 4660 flow [2024-06-04 14:33:32,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 273 transitions, 4486 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:32,326 INFO L231 Difference]: Finished difference. Result has 239 places, 253 transitions, 3801 flow [2024-06-04 14:33:32,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3554, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3801, PETRI_PLACES=239, PETRI_TRANSITIONS=253} [2024-06-04 14:33:32,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-04 14:33:32,328 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 253 transitions, 3801 flow [2024-06-04 14:33:32,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:32,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:32,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:32,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:33:32,328 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)] === [2024-06-04 14:33:32,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1809307658, now seen corresponding path program 7 times [2024-06-04 14:33:32,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:32,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393828897] [2024-06-04 14:33:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:32,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:33,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:33,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393828897] [2024-06-04 14:33:33,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393828897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:33,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:33,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:33,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521597006] [2024-06-04 14:33:33,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:33,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:33,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:33,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:33,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 253 transitions, 3801 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:33,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:33,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:33,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:34,232 INFO L124 PetriNetUnfolderBase]: 734/1257 cut-off events. [2024-06-04 14:33:34,233 INFO L125 PetriNetUnfolderBase]: For 108255/108255 co-relation queries the response was YES. [2024-06-04 14:33:34,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 1257 events. 734/1257 cut-off events. For 108255/108255 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6243 event pairs, 95 based on Foata normal form. 4/1260 useless extension candidates. Maximal degree in co-relation 11882. Up to 1092 conditions per place. [2024-06-04 14:33:34,245 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 48 changer transitions 0/276 dead transitions. [2024-06-04 14:33:34,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 276 transitions, 4670 flow [2024-06-04 14:33:34,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:33:34,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 14:33:34,246 INFO L175 Difference]: Start difference. First operand has 239 places, 253 transitions, 3801 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:33:34,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 276 transitions, 4670 flow [2024-06-04 14:33:34,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 276 transitions, 4432 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:34,479 INFO L231 Difference]: Finished difference. Result has 242 places, 259 transitions, 3829 flow [2024-06-04 14:33:34,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3573, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3829, PETRI_PLACES=242, PETRI_TRANSITIONS=259} [2024-06-04 14:33:34,480 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-04 14:33:34,480 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 259 transitions, 3829 flow [2024-06-04 14:33:34,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:34,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:34,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:34,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:33:34,480 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)] === [2024-06-04 14:33:34,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1809307844, now seen corresponding path program 1 times [2024-06-04 14:33:34,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:34,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882269031] [2024-06-04 14:33:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:34,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:35,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:35,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882269031] [2024-06-04 14:33:35,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882269031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:35,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:35,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:35,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561140470] [2024-06-04 14:33:35,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:35,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:35,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 259 transitions, 3829 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-04 14:33:35,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:35,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:35,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:35,890 INFO L124 PetriNetUnfolderBase]: 728/1248 cut-off events. [2024-06-04 14:33:35,891 INFO L125 PetriNetUnfolderBase]: For 104895/104895 co-relation queries the response was YES. [2024-06-04 14:33:35,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11640 conditions, 1248 events. 728/1248 cut-off events. For 104895/104895 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6215 event pairs, 96 based on Foata normal form. 3/1250 useless extension candidates. Maximal degree in co-relation 11522. Up to 1112 conditions per place. [2024-06-04 14:33:35,907 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 232 selfloop transitions, 39 changer transitions 0/273 dead transitions. [2024-06-04 14:33:35,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 273 transitions, 4411 flow [2024-06-04 14:33:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:33:35,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 14:33:35,908 INFO L175 Difference]: Start difference. First operand has 242 places, 259 transitions, 3829 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:33:35,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 273 transitions, 4411 flow [2024-06-04 14:33:36,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 273 transitions, 4291 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:36,157 INFO L231 Difference]: Finished difference. Result has 245 places, 259 transitions, 3797 flow [2024-06-04 14:33:36,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3709, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3797, PETRI_PLACES=245, PETRI_TRANSITIONS=259} [2024-06-04 14:33:36,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-04 14:33:36,157 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 259 transitions, 3797 flow [2024-06-04 14:33:36,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-04 14:33:36,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:36,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:36,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:33:36,158 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)] === [2024-06-04 14:33:36,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:36,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1815563954, now seen corresponding path program 2 times [2024-06-04 14:33:36,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:36,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628971465] [2024-06-04 14:33:36,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:36,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:37,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628971465] [2024-06-04 14:33:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628971465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:37,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:37,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:37,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305519255] [2024-06-04 14:33:37,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:37,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:37,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:37,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:37,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:37,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:37,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 259 transitions, 3797 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:37,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:37,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:37,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:38,032 INFO L124 PetriNetUnfolderBase]: 724/1241 cut-off events. [2024-06-04 14:33:38,033 INFO L125 PetriNetUnfolderBase]: For 101112/101112 co-relation queries the response was YES. [2024-06-04 14:33:38,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11558 conditions, 1241 events. 724/1241 cut-off events. For 101112/101112 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6150 event pairs, 98 based on Foata normal form. 1/1241 useless extension candidates. Maximal degree in co-relation 11438. Up to 1049 conditions per place. [2024-06-04 14:33:38,045 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 217 selfloop transitions, 53 changer transitions 0/272 dead transitions. [2024-06-04 14:33:38,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 272 transitions, 4373 flow [2024-06-04 14:33:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 14:33:38,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 14:33:38,047 INFO L175 Difference]: Start difference. First operand has 245 places, 259 transitions, 3797 flow. Second operand 9 states and 118 transitions. [2024-06-04 14:33:38,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 272 transitions, 4373 flow [2024-06-04 14:33:38,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 272 transitions, 4258 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:38,283 INFO L231 Difference]: Finished difference. Result has 246 places, 259 transitions, 3795 flow [2024-06-04 14:33:38,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3795, PETRI_PLACES=246, PETRI_TRANSITIONS=259} [2024-06-04 14:33:38,284 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-04 14:33:38,284 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 259 transitions, 3795 flow [2024-06-04 14:33:38,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:38,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:38,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:38,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:33:38,285 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)] === [2024-06-04 14:33:38,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash -483850714, now seen corresponding path program 8 times [2024-06-04 14:33:38,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:38,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463724235] [2024-06-04 14:33:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:38,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:39,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:39,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463724235] [2024-06-04 14:33:39,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463724235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:39,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:39,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:39,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401162509] [2024-06-04 14:33:39,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:39,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:39,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:39,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:39,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:39,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:39,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 259 transitions, 3795 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:39,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:39,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:39,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:40,079 INFO L124 PetriNetUnfolderBase]: 716/1229 cut-off events. [2024-06-04 14:33:40,079 INFO L125 PetriNetUnfolderBase]: For 102807/102807 co-relation queries the response was YES. [2024-06-04 14:33:40,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11245 conditions, 1229 events. 716/1229 cut-off events. For 102807/102807 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6092 event pairs, 83 based on Foata normal form. 4/1232 useless extension candidates. Maximal degree in co-relation 11125. Up to 982 conditions per place. [2024-06-04 14:33:40,091 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 205 selfloop transitions, 70 changer transitions 0/277 dead transitions. [2024-06-04 14:33:40,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 277 transitions, 4540 flow [2024-06-04 14:33:40,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 14:33:40,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 14:33:40,093 INFO L175 Difference]: Start difference. First operand has 246 places, 259 transitions, 3795 flow. Second operand 10 states and 127 transitions. [2024-06-04 14:33:40,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 277 transitions, 4540 flow [2024-06-04 14:33:40,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 277 transitions, 4408 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 14:33:40,326 INFO L231 Difference]: Finished difference. Result has 247 places, 260 transitions, 3842 flow [2024-06-04 14:33:40,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3842, PETRI_PLACES=247, PETRI_TRANSITIONS=260} [2024-06-04 14:33:40,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-04 14:33:40,327 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 260 transitions, 3842 flow [2024-06-04 14:33:40,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:40,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:40,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:40,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:33:40,335 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)] === [2024-06-04 14:33:40,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:40,335 INFO L85 PathProgramCache]: Analyzing trace with hash -477594604, now seen corresponding path program 9 times [2024-06-04 14:33:40,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:40,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258018568] [2024-06-04 14:33:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:41,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:41,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258018568] [2024-06-04 14:33:41,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258018568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:41,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:41,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:41,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648175538] [2024-06-04 14:33:41,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:41,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:41,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:41,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:41,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:41,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:41,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 260 transitions, 3842 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:41,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:41,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:41,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:42,040 INFO L124 PetriNetUnfolderBase]: 708/1217 cut-off events. [2024-06-04 14:33:42,041 INFO L125 PetriNetUnfolderBase]: For 95789/95789 co-relation queries the response was YES. [2024-06-04 14:33:42,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 1217 events. 708/1217 cut-off events. For 95789/95789 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6033 event pairs, 85 based on Foata normal form. 4/1220 useless extension candidates. Maximal degree in co-relation 10840. Up to 1058 conditions per place. [2024-06-04 14:33:42,053 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 48 changer transitions 0/276 dead transitions. [2024-06-04 14:33:42,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 276 transitions, 4436 flow [2024-06-04 14:33:42,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:33:42,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 14:33:42,055 INFO L175 Difference]: Start difference. First operand has 247 places, 260 transitions, 3842 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:33:42,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 276 transitions, 4436 flow [2024-06-04 14:33:42,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 276 transitions, 4138 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:42,271 INFO L231 Difference]: Finished difference. Result has 249 places, 260 transitions, 3648 flow [2024-06-04 14:33:42,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3544, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3648, PETRI_PLACES=249, PETRI_TRANSITIONS=260} [2024-06-04 14:33:42,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-04 14:33:42,272 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 260 transitions, 3648 flow [2024-06-04 14:33:42,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:42,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:42,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:42,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:33:42,273 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)] === [2024-06-04 14:33:42,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:42,274 INFO L85 PathProgramCache]: Analyzing trace with hash 63022598, now seen corresponding path program 2 times [2024-06-04 14:33:42,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:42,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909091189] [2024-06-04 14:33:42,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:42,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:43,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:43,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909091189] [2024-06-04 14:33:43,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909091189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:43,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:43,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:43,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056784882] [2024-06-04 14:33:43,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:43,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:43,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:43,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:43,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:43,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:43,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 3648 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:43,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:43,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:43,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:43,699 INFO L124 PetriNetUnfolderBase]: 712/1225 cut-off events. [2024-06-04 14:33:43,699 INFO L125 PetriNetUnfolderBase]: For 93679/93679 co-relation queries the response was YES. [2024-06-04 14:33:43,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10804 conditions, 1225 events. 712/1225 cut-off events. For 93679/93679 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6079 event pairs, 137 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 10683. Up to 1179 conditions per place. [2024-06-04 14:33:43,711 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 255 selfloop transitions, 17 changer transitions 0/274 dead transitions. [2024-06-04 14:33:43,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 274 transitions, 4268 flow [2024-06-04 14:33:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:43,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 14:33:43,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:33:43,720 INFO L175 Difference]: Start difference. First operand has 249 places, 260 transitions, 3648 flow. Second operand 9 states and 102 transitions. [2024-06-04 14:33:43,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 274 transitions, 4268 flow [2024-06-04 14:33:43,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 274 transitions, 4151 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 14:33:43,945 INFO L231 Difference]: Finished difference. Result has 250 places, 263 transitions, 3624 flow [2024-06-04 14:33:43,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3624, PETRI_PLACES=250, PETRI_TRANSITIONS=263} [2024-06-04 14:33:43,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-04 14:33:43,946 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 263 transitions, 3624 flow [2024-06-04 14:33:43,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:43,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:43,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:43,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:33:43,947 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)] === [2024-06-04 14:33:43,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1257404372, now seen corresponding path program 10 times [2024-06-04 14:33:43,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:43,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775090468] [2024-06-04 14:33:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:43,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:44,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:44,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775090468] [2024-06-04 14:33:44,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775090468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:44,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:44,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:44,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823960752] [2024-06-04 14:33:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:44,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:45,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:45,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 263 transitions, 3624 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:45,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:45,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:45,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:45,625 INFO L124 PetriNetUnfolderBase]: 728/1251 cut-off events. [2024-06-04 14:33:45,625 INFO L125 PetriNetUnfolderBase]: For 100749/100749 co-relation queries the response was YES. [2024-06-04 14:33:45,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11141 conditions, 1251 events. 728/1251 cut-off events. For 100749/100749 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6253 event pairs, 134 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 11018. Up to 1166 conditions per place. [2024-06-04 14:33:45,638 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 26 changer transitions 0/282 dead transitions. [2024-06-04 14:33:45,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 282 transitions, 4466 flow [2024-06-04 14:33:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:33:45,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-04 14:33:45,645 INFO L175 Difference]: Start difference. First operand has 250 places, 263 transitions, 3624 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:33:45,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 282 transitions, 4466 flow [2024-06-04 14:33:45,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 282 transitions, 4422 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:45,865 INFO L231 Difference]: Finished difference. Result has 254 places, 267 transitions, 3757 flow [2024-06-04 14:33:45,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3580, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3757, PETRI_PLACES=254, PETRI_TRANSITIONS=267} [2024-06-04 14:33:45,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 14:33:45,868 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 267 transitions, 3757 flow [2024-06-04 14:33:45,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:45,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:45,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:45,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:33:45,868 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)] === [2024-06-04 14:33:45,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:45,869 INFO L85 PathProgramCache]: Analyzing trace with hash 914800548, now seen corresponding path program 3 times [2024-06-04 14:33:45,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:45,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432580829] [2024-06-04 14:33:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:45,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:46,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432580829] [2024-06-04 14:33:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432580829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:46,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:46,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991389148] [2024-06-04 14:33:46,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:46,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:46,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:46,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:46,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 267 transitions, 3757 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:46,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:46,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:46,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:47,306 INFO L124 PetriNetUnfolderBase]: 732/1259 cut-off events. [2024-06-04 14:33:47,307 INFO L125 PetriNetUnfolderBase]: For 104017/104017 co-relation queries the response was YES. [2024-06-04 14:33:47,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11253 conditions, 1259 events. 732/1259 cut-off events. For 104017/104017 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6293 event pairs, 140 based on Foata normal form. 2/1260 useless extension candidates. Maximal degree in co-relation 11129. Up to 1220 conditions per place. [2024-06-04 14:33:47,317 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 262 selfloop transitions, 14 changer transitions 0/278 dead transitions. [2024-06-04 14:33:47,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 278 transitions, 4345 flow [2024-06-04 14:33:47,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 14:33:47,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 14:33:47,318 INFO L175 Difference]: Start difference. First operand has 254 places, 267 transitions, 3757 flow. Second operand 9 states and 97 transitions. [2024-06-04 14:33:47,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 278 transitions, 4345 flow [2024-06-04 14:33:47,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 278 transitions, 4258 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:47,554 INFO L231 Difference]: Finished difference. Result has 257 places, 268 transitions, 3718 flow [2024-06-04 14:33:47,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3670, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3718, PETRI_PLACES=257, PETRI_TRANSITIONS=268} [2024-06-04 14:33:47,554 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 14:33:47,554 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 268 transitions, 3718 flow [2024-06-04 14:33:47,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:47,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:47,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:47,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:33:47,555 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)] === [2024-06-04 14:33:47,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash 914444358, now seen corresponding path program 4 times [2024-06-04 14:33:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383540594] [2024-06-04 14:33:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:47,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383540594] [2024-06-04 14:33:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383540594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200109784] [2024-06-04 14:33:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:48,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:48,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:48,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:48,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 268 transitions, 3718 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:48,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:48,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:48,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:48,795 INFO L124 PetriNetUnfolderBase]: 736/1267 cut-off events. [2024-06-04 14:33:48,795 INFO L125 PetriNetUnfolderBase]: For 106452/106452 co-relation queries the response was YES. [2024-06-04 14:33:48,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11269 conditions, 1267 events. 736/1267 cut-off events. For 106452/106452 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6374 event pairs, 148 based on Foata normal form. 2/1268 useless extension candidates. Maximal degree in co-relation 11143. Up to 1225 conditions per place. [2024-06-04 14:33:48,809 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 260 selfloop transitions, 17 changer transitions 0/279 dead transitions. [2024-06-04 14:33:48,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 279 transitions, 4312 flow [2024-06-04 14:33:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 14:33:48,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:33:48,810 INFO L175 Difference]: Start difference. First operand has 257 places, 268 transitions, 3718 flow. Second operand 9 states and 99 transitions. [2024-06-04 14:33:48,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 279 transitions, 4312 flow [2024-06-04 14:33:49,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 279 transitions, 4274 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:49,068 INFO L231 Difference]: Finished difference. Result has 259 places, 269 transitions, 3737 flow [2024-06-04 14:33:49,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3737, PETRI_PLACES=259, PETRI_TRANSITIONS=269} [2024-06-04 14:33:49,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-04 14:33:49,069 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 269 transitions, 3737 flow [2024-06-04 14:33:49,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:49,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:49,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:49,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:33:49,069 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)] === [2024-06-04 14:33:49,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash -972952906, now seen corresponding path program 11 times [2024-06-04 14:33:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:49,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849180081] [2024-06-04 14:33:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:50,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849180081] [2024-06-04 14:33:50,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849180081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:50,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:50,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:50,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163999429] [2024-06-04 14:33:50,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:50,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:50,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:50,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:50,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 269 transitions, 3737 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:50,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:50,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:50,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:51,132 INFO L124 PetriNetUnfolderBase]: 760/1306 cut-off events. [2024-06-04 14:33:51,132 INFO L125 PetriNetUnfolderBase]: For 117902/117902 co-relation queries the response was YES. [2024-06-04 14:33:51,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11882 conditions, 1306 events. 760/1306 cut-off events. For 117902/117902 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6607 event pairs, 134 based on Foata normal form. 2/1307 useless extension candidates. Maximal degree in co-relation 11755. Up to 1205 conditions per place. [2024-06-04 14:33:51,150 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 28 changer transitions 0/292 dead transitions. [2024-06-04 14:33:51,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 292 transitions, 4791 flow [2024-06-04 14:33:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:33:51,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 14:33:51,155 INFO L175 Difference]: Start difference. First operand has 259 places, 269 transitions, 3737 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:33:51,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 292 transitions, 4791 flow [2024-06-04 14:33:51,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 292 transitions, 4746 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:51,477 INFO L231 Difference]: Finished difference. Result has 263 places, 276 transitions, 3943 flow [2024-06-04 14:33:51,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3692, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3943, PETRI_PLACES=263, PETRI_TRANSITIONS=276} [2024-06-04 14:33:51,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-04 14:33:51,478 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 276 transitions, 3943 flow [2024-06-04 14:33:51,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:51,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:51,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:51,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:33:51,478 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)] === [2024-06-04 14:33:51,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1194604456, now seen corresponding path program 12 times [2024-06-04 14:33:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:51,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321232667] [2024-06-04 14:33:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:51,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321232667] [2024-06-04 14:33:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321232667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:52,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:52,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:52,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105222121] [2024-06-04 14:33:52,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:52,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:52,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:52,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 276 transitions, 3943 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:52,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:52,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:52,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:53,187 INFO L124 PetriNetUnfolderBase]: 789/1354 cut-off events. [2024-06-04 14:33:53,187 INFO L125 PetriNetUnfolderBase]: For 133444/133444 co-relation queries the response was YES. [2024-06-04 14:33:53,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 1354 events. 789/1354 cut-off events. For 133444/133444 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6894 event pairs, 136 based on Foata normal form. 4/1357 useless extension candidates. Maximal degree in co-relation 12481. Up to 1234 conditions per place. [2024-06-04 14:33:53,201 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 31 changer transitions 0/298 dead transitions. [2024-06-04 14:33:53,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 298 transitions, 4866 flow [2024-06-04 14:33:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:33:53,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:33:53,202 INFO L175 Difference]: Start difference. First operand has 263 places, 276 transitions, 3943 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:33:53,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 298 transitions, 4866 flow [2024-06-04 14:33:53,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 298 transitions, 4732 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:53,502 INFO L231 Difference]: Finished difference. Result has 269 places, 283 transitions, 4057 flow [2024-06-04 14:33:53,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3809, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4057, PETRI_PLACES=269, PETRI_TRANSITIONS=283} [2024-06-04 14:33:53,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-04 14:33:53,503 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 283 transitions, 4057 flow [2024-06-04 14:33:53,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:53,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:53,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:53,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:33:53,503 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)] === [2024-06-04 14:33:53,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:53,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1257397676, now seen corresponding path program 3 times [2024-06-04 14:33:53,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:53,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008461329] [2024-06-04 14:33:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:53,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:54,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008461329] [2024-06-04 14:33:54,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008461329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:54,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:54,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:54,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362288696] [2024-06-04 14:33:54,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:54,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:54,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:54,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:54,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 283 transitions, 4057 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:54,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:54,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:54,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:55,501 INFO L124 PetriNetUnfolderBase]: 781/1341 cut-off events. [2024-06-04 14:33:55,503 INFO L125 PetriNetUnfolderBase]: For 126731/126731 co-relation queries the response was YES. [2024-06-04 14:33:55,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12318 conditions, 1341 events. 781/1341 cut-off events. For 126731/126731 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6824 event pairs, 144 based on Foata normal form. 3/1343 useless extension candidates. Maximal degree in co-relation 12187. Up to 1268 conditions per place. [2024-06-04 14:33:55,515 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 24 changer transitions 0/297 dead transitions. [2024-06-04 14:33:55,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 297 transitions, 4687 flow [2024-06-04 14:33:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 14:33:55,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 14:33:55,516 INFO L175 Difference]: Start difference. First operand has 269 places, 283 transitions, 4057 flow. Second operand 10 states and 118 transitions. [2024-06-04 14:33:55,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 297 transitions, 4687 flow [2024-06-04 14:33:55,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 297 transitions, 4597 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:55,842 INFO L231 Difference]: Finished difference. Result has 273 places, 283 transitions, 4021 flow [2024-06-04 14:33:55,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4021, PETRI_PLACES=273, PETRI_TRANSITIONS=283} [2024-06-04 14:33:55,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-04 14:33:55,843 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 283 transitions, 4021 flow [2024-06-04 14:33:55,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:55,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:55,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:55,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:33:55,843 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)] === [2024-06-04 14:33:55,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash 904316100, now seen corresponding path program 13 times [2024-06-04 14:33:55,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:55,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555464188] [2024-06-04 14:33:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:55,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:56,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:56,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555464188] [2024-06-04 14:33:56,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555464188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:56,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:56,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:56,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745562628] [2024-06-04 14:33:56,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:56,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:56,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:56,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:56,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:56,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 283 transitions, 4021 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:56,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:56,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:56,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:57,506 INFO L124 PetriNetUnfolderBase]: 771/1326 cut-off events. [2024-06-04 14:33:57,506 INFO L125 PetriNetUnfolderBase]: For 122581/122581 co-relation queries the response was YES. [2024-06-04 14:33:57,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11886 conditions, 1326 events. 771/1326 cut-off events. For 122581/122581 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6737 event pairs, 145 based on Foata normal form. 5/1330 useless extension candidates. Maximal degree in co-relation 11753. Up to 1260 conditions per place. [2024-06-04 14:33:57,521 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 22 changer transitions 0/298 dead transitions. [2024-06-04 14:33:57,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 298 transitions, 4707 flow [2024-06-04 14:33:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:33:57,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:33:57,522 INFO L175 Difference]: Start difference. First operand has 273 places, 283 transitions, 4021 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:33:57,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 298 transitions, 4707 flow [2024-06-04 14:33:57,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 298 transitions, 4617 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:57,853 INFO L231 Difference]: Finished difference. Result has 275 places, 285 transitions, 4027 flow [2024-06-04 14:33:57,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3931, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4027, PETRI_PLACES=275, PETRI_TRANSITIONS=285} [2024-06-04 14:33:57,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-04 14:33:57,853 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 285 transitions, 4027 flow [2024-06-04 14:33:57,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:57,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:57,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:57,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:33:57,854 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)] === [2024-06-04 14:33:57,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:57,854 INFO L85 PathProgramCache]: Analyzing trace with hash 618979080, now seen corresponding path program 14 times [2024-06-04 14:33:57,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:57,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242817912] [2024-06-04 14:33:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:57,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:58,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:58,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242817912] [2024-06-04 14:33:58,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242817912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:58,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:58,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111114956] [2024-06-04 14:33:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:58,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:58,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:58,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:58,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:59,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:33:59,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 285 transitions, 4027 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:59,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:59,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:33:59,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:59,562 INFO L124 PetriNetUnfolderBase]: 790/1358 cut-off events. [2024-06-04 14:33:59,562 INFO L125 PetriNetUnfolderBase]: For 127191/127191 co-relation queries the response was YES. [2024-06-04 14:33:59,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12247 conditions, 1358 events. 790/1358 cut-off events. For 127191/127191 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6958 event pairs, 139 based on Foata normal form. 4/1361 useless extension candidates. Maximal degree in co-relation 12113. Up to 1250 conditions per place. [2024-06-04 14:33:59,576 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 27 changer transitions 0/305 dead transitions. [2024-06-04 14:33:59,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 305 transitions, 4957 flow [2024-06-04 14:33:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:33:59,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 14:33:59,577 INFO L175 Difference]: Start difference. First operand has 275 places, 285 transitions, 4027 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:33:59,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 305 transitions, 4957 flow [2024-06-04 14:33:59,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 305 transitions, 4849 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:59,939 INFO L231 Difference]: Finished difference. Result has 278 places, 291 transitions, 4148 flow [2024-06-04 14:33:59,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4148, PETRI_PLACES=278, PETRI_TRANSITIONS=291} [2024-06-04 14:33:59,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-04 14:33:59,940 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 291 transitions, 4148 flow [2024-06-04 14:33:59,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:59,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:59,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:59,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:33:59,940 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)] === [2024-06-04 14:33:59,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1250968586, now seen corresponding path program 4 times [2024-06-04 14:33:59,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:59,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852829897] [2024-06-04 14:33:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:59,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:01,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:01,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852829897] [2024-06-04 14:34:01,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852829897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:01,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:01,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:01,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334969394] [2024-06-04 14:34:01,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:01,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:01,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:01,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:01,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 291 transitions, 4148 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:01,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:01,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:01,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:01,847 INFO L124 PetriNetUnfolderBase]: 796/1368 cut-off events. [2024-06-04 14:34:01,847 INFO L125 PetriNetUnfolderBase]: For 123853/123853 co-relation queries the response was YES. [2024-06-04 14:34:01,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12350 conditions, 1368 events. 796/1368 cut-off events. For 123853/123853 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7030 event pairs, 130 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 12214. Up to 1198 conditions per place. [2024-06-04 14:34:01,861 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 50 changer transitions 0/308 dead transitions. [2024-06-04 14:34:01,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 308 transitions, 4998 flow [2024-06-04 14:34:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:01,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 14:34:01,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 14:34:01,862 INFO L175 Difference]: Start difference. First operand has 278 places, 291 transitions, 4148 flow. Second operand 9 states and 111 transitions. [2024-06-04 14:34:01,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 308 transitions, 4998 flow [2024-06-04 14:34:02,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 308 transitions, 4882 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:02,272 INFO L231 Difference]: Finished difference. Result has 282 places, 296 transitions, 4251 flow [2024-06-04 14:34:02,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4032, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4251, PETRI_PLACES=282, PETRI_TRANSITIONS=296} [2024-06-04 14:34:02,273 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-04 14:34:02,273 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 296 transitions, 4251 flow [2024-06-04 14:34:02,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:02,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:02,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:02,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:34:02,273 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)] === [2024-06-04 14:34:02,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash 608475790, now seen corresponding path program 5 times [2024-06-04 14:34:02,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:02,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379067551] [2024-06-04 14:34:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:03,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:03,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379067551] [2024-06-04 14:34:03,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379067551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:03,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:03,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:03,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105919512] [2024-06-04 14:34:03,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:03,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:03,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:03,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:03,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 296 transitions, 4251 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:03,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:03,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:03,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:03,891 INFO L124 PetriNetUnfolderBase]: 788/1355 cut-off events. [2024-06-04 14:34:03,891 INFO L125 PetriNetUnfolderBase]: For 123811/123811 co-relation queries the response was YES. [2024-06-04 14:34:03,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12112 conditions, 1355 events. 788/1355 cut-off events. For 123811/123811 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6945 event pairs, 142 based on Foata normal form. 3/1357 useless extension candidates. Maximal degree in co-relation 11973. Up to 1294 conditions per place. [2024-06-04 14:34:03,906 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 20 changer transitions 0/309 dead transitions. [2024-06-04 14:34:03,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 309 transitions, 4901 flow [2024-06-04 14:34:03,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 14:34:03,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-04 14:34:03,908 INFO L175 Difference]: Start difference. First operand has 282 places, 296 transitions, 4251 flow. Second operand 10 states and 114 transitions. [2024-06-04 14:34:03,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 309 transitions, 4901 flow [2024-06-04 14:34:04,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 309 transitions, 4767 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:04,308 INFO L231 Difference]: Finished difference. Result has 285 places, 296 transitions, 4163 flow [2024-06-04 14:34:04,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4117, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4163, PETRI_PLACES=285, PETRI_TRANSITIONS=296} [2024-06-04 14:34:04,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-04 14:34:04,308 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 296 transitions, 4163 flow [2024-06-04 14:34:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:04,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:04,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:04,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:34:04,309 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)] === [2024-06-04 14:34:04,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:04,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1250968772, now seen corresponding path program 15 times [2024-06-04 14:34:04,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:04,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096635863] [2024-06-04 14:34:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:04,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:05,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:05,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096635863] [2024-06-04 14:34:05,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096635863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:05,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:05,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163297893] [2024-06-04 14:34:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:05,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:05,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 296 transitions, 4163 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:05,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:05,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:05,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:06,088 INFO L124 PetriNetUnfolderBase]: 810/1391 cut-off events. [2024-06-04 14:34:06,088 INFO L125 PetriNetUnfolderBase]: For 131194/131194 co-relation queries the response was YES. [2024-06-04 14:34:06,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12463 conditions, 1391 events. 810/1391 cut-off events. For 131194/131194 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7163 event pairs, 133 based on Foata normal form. 4/1394 useless extension candidates. Maximal degree in co-relation 12325. Up to 1118 conditions per place. [2024-06-04 14:34:06,108 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 60 changer transitions 0/318 dead transitions. [2024-06-04 14:34:06,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 318 transitions, 5301 flow [2024-06-04 14:34:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 14:34:06,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 14:34:06,109 INFO L175 Difference]: Start difference. First operand has 285 places, 296 transitions, 4163 flow. Second operand 10 states and 124 transitions. [2024-06-04 14:34:06,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 318 transitions, 5301 flow [2024-06-04 14:34:06,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 318 transitions, 5218 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:34:06,554 INFO L231 Difference]: Finished difference. Result has 286 places, 302 transitions, 4388 flow [2024-06-04 14:34:06,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4388, PETRI_PLACES=286, PETRI_TRANSITIONS=302} [2024-06-04 14:34:06,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-04 14:34:06,555 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 302 transitions, 4388 flow [2024-06-04 14:34:06,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:06,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:06,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:06,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:34:06,556 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)] === [2024-06-04 14:34:06,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1250963812, now seen corresponding path program 5 times [2024-06-04 14:34:06,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:06,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939867569] [2024-06-04 14:34:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:06,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:07,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:07,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939867569] [2024-06-04 14:34:07,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939867569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:07,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:07,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355032627] [2024-06-04 14:34:07,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:07,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:07,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 302 transitions, 4388 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:07,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:07,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:07,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:08,212 INFO L124 PetriNetUnfolderBase]: 807/1386 cut-off events. [2024-06-04 14:34:08,212 INFO L125 PetriNetUnfolderBase]: For 124449/124449 co-relation queries the response was YES. [2024-06-04 14:34:08,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12394 conditions, 1386 events. 807/1386 cut-off events. For 124449/124449 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7102 event pairs, 156 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 12256. Up to 1352 conditions per place. [2024-06-04 14:34:08,229 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 294 selfloop transitions, 16 changer transitions 0/312 dead transitions. [2024-06-04 14:34:08,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 312 transitions, 5030 flow [2024-06-04 14:34:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:34:08,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 14:34:08,230 INFO L175 Difference]: Start difference. First operand has 286 places, 302 transitions, 4388 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:34:08,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 312 transitions, 5030 flow [2024-06-04 14:34:08,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 312 transitions, 4684 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:08,679 INFO L231 Difference]: Finished difference. Result has 288 places, 302 transitions, 4078 flow [2024-06-04 14:34:08,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4078, PETRI_PLACES=288, PETRI_TRANSITIONS=302} [2024-06-04 14:34:08,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-04 14:34:08,680 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 302 transitions, 4078 flow [2024-06-04 14:34:08,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:08,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:08,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:08,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:34:08,681 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)] === [2024-06-04 14:34:08,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:08,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1251148262, now seen corresponding path program 16 times [2024-06-04 14:34:08,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:08,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299249759] [2024-06-04 14:34:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:08,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:09,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:09,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299249759] [2024-06-04 14:34:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299249759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:09,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:09,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66120018] [2024-06-04 14:34:09,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:09,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:09,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:09,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:09,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 302 transitions, 4078 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:09,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:09,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:09,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:10,460 INFO L124 PetriNetUnfolderBase]: 813/1396 cut-off events. [2024-06-04 14:34:10,460 INFO L125 PetriNetUnfolderBase]: For 127011/127011 co-relation queries the response was YES. [2024-06-04 14:34:10,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12072 conditions, 1396 events. 813/1396 cut-off events. For 127011/127011 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7205 event pairs, 131 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 11934. Up to 1228 conditions per place. [2024-06-04 14:34:10,476 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 270 selfloop transitions, 46 changer transitions 0/318 dead transitions. [2024-06-04 14:34:10,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 318 transitions, 4954 flow [2024-06-04 14:34:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:34:10,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-04 14:34:10,477 INFO L175 Difference]: Start difference. First operand has 288 places, 302 transitions, 4078 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:34:10,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 318 transitions, 4954 flow [2024-06-04 14:34:10,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 318 transitions, 4813 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-04 14:34:10,853 INFO L231 Difference]: Finished difference. Result has 286 places, 304 transitions, 4094 flow [2024-06-04 14:34:10,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3937, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4094, PETRI_PLACES=286, PETRI_TRANSITIONS=304} [2024-06-04 14:34:10,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-04 14:34:10,854 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 304 transitions, 4094 flow [2024-06-04 14:34:10,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:10,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:10,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:10,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:34:10,855 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)] === [2024-06-04 14:34:10,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:10,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1251141752, now seen corresponding path program 17 times [2024-06-04 14:34:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:10,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78295303] [2024-06-04 14:34:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78295303] [2024-06-04 14:34:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78295303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:11,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:11,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648581760] [2024-06-04 14:34:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:11,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:12,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:12,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 304 transitions, 4094 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:12,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:12,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:12,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:12,603 INFO L124 PetriNetUnfolderBase]: 809/1390 cut-off events. [2024-06-04 14:34:12,604 INFO L125 PetriNetUnfolderBase]: For 124900/124900 co-relation queries the response was YES. [2024-06-04 14:34:12,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11864 conditions, 1390 events. 809/1390 cut-off events. For 124900/124900 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7164 event pairs, 132 based on Foata normal form. 2/1391 useless extension candidates. Maximal degree in co-relation 11727. Up to 1225 conditions per place. [2024-06-04 14:34:12,617 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 271 selfloop transitions, 45 changer transitions 0/318 dead transitions. [2024-06-04 14:34:12,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 318 transitions, 4766 flow [2024-06-04 14:34:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:34:12,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:34:12,618 INFO L175 Difference]: Start difference. First operand has 286 places, 304 transitions, 4094 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:34:12,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 318 transitions, 4766 flow [2024-06-04 14:34:13,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 318 transitions, 4498 flow, removed 47 selfloop flow, removed 12 redundant places. [2024-06-04 14:34:13,022 INFO L231 Difference]: Finished difference. Result has 284 places, 304 transitions, 3921 flow [2024-06-04 14:34:13,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3921, PETRI_PLACES=284, PETRI_TRANSITIONS=304} [2024-06-04 14:34:13,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 14:34:13,023 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 304 transitions, 3921 flow [2024-06-04 14:34:13,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:13,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:13,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:13,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:34:13,024 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)] === [2024-06-04 14:34:13,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:13,024 INFO L85 PathProgramCache]: Analyzing trace with hash 619225158, now seen corresponding path program 5 times [2024-06-04 14:34:13,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:13,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908517974] [2024-06-04 14:34:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:13,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908517974] [2024-06-04 14:34:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908517974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:14,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:14,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:14,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123521517] [2024-06-04 14:34:14,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:14,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:14,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:14,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:14,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:14,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 304 transitions, 3921 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:14,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:14,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:14,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:14,687 INFO L124 PetriNetUnfolderBase]: 806/1385 cut-off events. [2024-06-04 14:34:14,687 INFO L125 PetriNetUnfolderBase]: For 121244/121244 co-relation queries the response was YES. [2024-06-04 14:34:14,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11355 conditions, 1385 events. 806/1385 cut-off events. For 121244/121244 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7113 event pairs, 150 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 11222. Up to 1351 conditions per place. [2024-06-04 14:34:14,701 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 299 selfloop transitions, 14 changer transitions 0/315 dead transitions. [2024-06-04 14:34:14,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 315 transitions, 4600 flow [2024-06-04 14:34:14,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:34:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:34:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 14:34:14,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 14:34:14,702 INFO L175 Difference]: Start difference. First operand has 284 places, 304 transitions, 3921 flow. Second operand 9 states and 98 transitions. [2024-06-04 14:34:14,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 315 transitions, 4600 flow [2024-06-04 14:34:15,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 315 transitions, 4517 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:15,056 INFO L231 Difference]: Finished difference. Result has 286 places, 305 transitions, 3899 flow [2024-06-04 14:34:15,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3840, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3899, PETRI_PLACES=286, PETRI_TRANSITIONS=305} [2024-06-04 14:34:15,057 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-04 14:34:15,057 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 305 transitions, 3899 flow [2024-06-04 14:34:15,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:15,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:15,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:15,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:34:15,058 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)] === [2024-06-04 14:34:15,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:15,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1200860752, now seen corresponding path program 6 times [2024-06-04 14:34:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:15,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148708391] [2024-06-04 14:34:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:15,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:16,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:16,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148708391] [2024-06-04 14:34:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148708391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:16,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618439438] [2024-06-04 14:34:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:16,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:16,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:16,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:16,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:16,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 305 transitions, 3899 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:16,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:16,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:16,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:16,893 INFO L124 PetriNetUnfolderBase]: 804/1382 cut-off events. [2024-06-04 14:34:16,893 INFO L125 PetriNetUnfolderBase]: For 118229/118229 co-relation queries the response was YES. [2024-06-04 14:34:16,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11210 conditions, 1382 events. 804/1382 cut-off events. For 118229/118229 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7117 event pairs, 134 based on Foata normal form. 1/1382 useless extension candidates. Maximal degree in co-relation 11076. Up to 1255 conditions per place. [2024-06-04 14:34:16,908 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 272 selfloop transitions, 42 changer transitions 0/316 dead transitions. [2024-06-04 14:34:16,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 316 transitions, 4555 flow [2024-06-04 14:34:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:16,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:34:16,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 14:34:16,910 INFO L175 Difference]: Start difference. First operand has 286 places, 305 transitions, 3899 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:34:16,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 316 transitions, 4555 flow [2024-06-04 14:34:17,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 316 transitions, 4438 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-04 14:34:17,271 INFO L231 Difference]: Finished difference. Result has 286 places, 305 transitions, 3871 flow [2024-06-04 14:34:17,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3871, PETRI_PLACES=286, PETRI_TRANSITIONS=305} [2024-06-04 14:34:17,272 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-04 14:34:17,272 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 305 transitions, 3871 flow [2024-06-04 14:34:17,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:17,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:17,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:17,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:34:17,272 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)] === [2024-06-04 14:34:17,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:17,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1172374038, now seen corresponding path program 18 times [2024-06-04 14:34:17,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:17,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107187791] [2024-06-04 14:34:17,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:17,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:18,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:18,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107187791] [2024-06-04 14:34:18,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107187791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401226462] [2024-06-04 14:34:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:18,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:18,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:18,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:18,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 305 transitions, 3871 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:18,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:18,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:18,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:19,482 INFO L124 PetriNetUnfolderBase]: 820/1409 cut-off events. [2024-06-04 14:34:19,482 INFO L125 PetriNetUnfolderBase]: For 123902/123902 co-relation queries the response was YES. [2024-06-04 14:34:19,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11426 conditions, 1409 events. 820/1409 cut-off events. For 123902/123902 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7252 event pairs, 116 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 11293. Up to 1331 conditions per place. [2024-06-04 14:34:19,497 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 34 changer transitions 0/336 dead transitions. [2024-06-04 14:34:19,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 336 transitions, 4747 flow [2024-06-04 14:34:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:34:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:34:19,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:34:19,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:34:19,498 INFO L175 Difference]: Start difference. First operand has 286 places, 305 transitions, 3871 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:34:19,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 336 transitions, 4747 flow [2024-06-04 14:34:19,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 336 transitions, 4544 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 14:34:19,820 INFO L231 Difference]: Finished difference. Result has 289 places, 317 transitions, 3932 flow [2024-06-04 14:34:19,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3669, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3932, PETRI_PLACES=289, PETRI_TRANSITIONS=317} [2024-06-04 14:34:19,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-04 14:34:19,820 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 317 transitions, 3932 flow [2024-06-04 14:34:19,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:19,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:19,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:19,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:34:19,821 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)] === [2024-06-04 14:34:19,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:19,821 INFO L85 PathProgramCache]: Analyzing trace with hash 89082546, now seen corresponding path program 19 times [2024-06-04 14:34:19,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:19,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725678654] [2024-06-04 14:34:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:19,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:21,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:21,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725678654] [2024-06-04 14:34:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725678654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:21,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:21,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:21,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752402478] [2024-06-04 14:34:21,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:21,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:21,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:21,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:21,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 317 transitions, 3932 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:21,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:21,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:21,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:21,796 INFO L124 PetriNetUnfolderBase]: 870/1493 cut-off events. [2024-06-04 14:34:21,796 INFO L125 PetriNetUnfolderBase]: For 138690/138690 co-relation queries the response was YES. [2024-06-04 14:34:21,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12089 conditions, 1493 events. 870/1493 cut-off events. For 138690/138690 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7792 event pairs, 124 based on Foata normal form. 4/1496 useless extension candidates. Maximal degree in co-relation 11955. Up to 1383 conditions per place. [2024-06-04 14:34:21,811 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 318 selfloop transitions, 38 changer transitions 0/358 dead transitions. [2024-06-04 14:34:21,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 358 transitions, 5173 flow [2024-06-04 14:34:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:34:21,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:34:21,813 INFO L175 Difference]: Start difference. First operand has 289 places, 317 transitions, 3932 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:34:21,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 358 transitions, 5173 flow [2024-06-04 14:34:22,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 358 transitions, 5062 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-04 14:34:22,393 INFO L231 Difference]: Finished difference. Result has 299 places, 337 transitions, 4268 flow [2024-06-04 14:34:22,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4268, PETRI_PLACES=299, PETRI_TRANSITIONS=337} [2024-06-04 14:34:22,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-04 14:34:22,393 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 337 transitions, 4268 flow [2024-06-04 14:34:22,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:22,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:22,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:22,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:34:22,394 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)] === [2024-06-04 14:34:22,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash 201573486, now seen corresponding path program 20 times [2024-06-04 14:34:22,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:22,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119273486] [2024-06-04 14:34:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:22,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:23,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:23,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119273486] [2024-06-04 14:34:23,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119273486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:23,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:23,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321725574] [2024-06-04 14:34:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:23,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:23,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:23,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:23,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 337 transitions, 4268 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:23,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:23,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:23,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:24,811 INFO L124 PetriNetUnfolderBase]: 894/1533 cut-off events. [2024-06-04 14:34:24,811 INFO L125 PetriNetUnfolderBase]: For 136953/136953 co-relation queries the response was YES. [2024-06-04 14:34:24,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12631 conditions, 1533 events. 894/1533 cut-off events. For 136953/136953 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8056 event pairs, 84 based on Foata normal form. 2/1534 useless extension candidates. Maximal degree in co-relation 12491. Up to 1151 conditions per place. [2024-06-04 14:34:24,828 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 255 selfloop transitions, 126 changer transitions 0/383 dead transitions. [2024-06-04 14:34:24,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 383 transitions, 5606 flow [2024-06-04 14:34:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:34:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:34:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-04 14:34:24,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-04 14:34:24,829 INFO L175 Difference]: Start difference. First operand has 299 places, 337 transitions, 4268 flow. Second operand 13 states and 165 transitions. [2024-06-04 14:34:24,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 383 transitions, 5606 flow [2024-06-04 14:34:25,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 383 transitions, 5503 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-04 14:34:25,337 INFO L231 Difference]: Finished difference. Result has 312 places, 356 transitions, 4836 flow [2024-06-04 14:34:25,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4836, PETRI_PLACES=312, PETRI_TRANSITIONS=356} [2024-06-04 14:34:25,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-04 14:34:25,337 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 356 transitions, 4836 flow [2024-06-04 14:34:25,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:25,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:25,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:25,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:34:25,338 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)] === [2024-06-04 14:34:25,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash -401368610, now seen corresponding path program 21 times [2024-06-04 14:34:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573115015] [2024-06-04 14:34:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:26,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:26,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573115015] [2024-06-04 14:34:26,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573115015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:26,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:26,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:26,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776011851] [2024-06-04 14:34:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:26,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:26,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:26,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:26,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:26,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:26,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 356 transitions, 4836 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:26,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:26,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:26,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:27,088 INFO L124 PetriNetUnfolderBase]: 916/1570 cut-off events. [2024-06-04 14:34:27,088 INFO L125 PetriNetUnfolderBase]: For 147111/147111 co-relation queries the response was YES. [2024-06-04 14:34:27,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13499 conditions, 1570 events. 916/1570 cut-off events. For 147111/147111 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8280 event pairs, 134 based on Foata normal form. 4/1573 useless extension candidates. Maximal degree in co-relation 13354. Up to 1492 conditions per place. [2024-06-04 14:34:27,109 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 356 selfloop transitions, 28 changer transitions 0/386 dead transitions. [2024-06-04 14:34:27,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 386 transitions, 6003 flow [2024-06-04 14:34:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:34:27,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 14:34:27,110 INFO L175 Difference]: Start difference. First operand has 312 places, 356 transitions, 4836 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:34:27,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 386 transitions, 6003 flow [2024-06-04 14:34:27,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 386 transitions, 5624 flow, removed 76 selfloop flow, removed 10 redundant places. [2024-06-04 14:34:27,683 INFO L231 Difference]: Finished difference. Result has 316 places, 366 transitions, 4724 flow [2024-06-04 14:34:27,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4463, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4724, PETRI_PLACES=316, PETRI_TRANSITIONS=366} [2024-06-04 14:34:27,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-04 14:34:27,683 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 366 transitions, 4724 flow [2024-06-04 14:34:27,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:27,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:27,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:27,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:34:27,684 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)] === [2024-06-04 14:34:27,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash -660887753, now seen corresponding path program 1 times [2024-06-04 14:34:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:27,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237357595] [2024-06-04 14:34:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:27,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237357595] [2024-06-04 14:34:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237357595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:29,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:29,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:29,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232271498] [2024-06-04 14:34:29,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:29,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:29,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:29,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 366 transitions, 4724 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:29,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:29,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:29,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:30,056 INFO L124 PetriNetUnfolderBase]: 927/1591 cut-off events. [2024-06-04 14:34:30,056 INFO L125 PetriNetUnfolderBase]: For 150278/150278 co-relation queries the response was YES. [2024-06-04 14:34:30,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13226 conditions, 1591 events. 927/1591 cut-off events. For 150278/150278 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8458 event pairs, 108 based on Foata normal form. 2/1592 useless extension candidates. Maximal degree in co-relation 13081. Up to 1361 conditions per place. [2024-06-04 14:34:30,075 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 333 selfloop transitions, 57 changer transitions 0/392 dead transitions. [2024-06-04 14:34:30,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 392 transitions, 5748 flow [2024-06-04 14:34:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:34:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:34:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:34:30,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:34:30,076 INFO L175 Difference]: Start difference. First operand has 316 places, 366 transitions, 4724 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:34:30,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 392 transitions, 5748 flow [2024-06-04 14:34:30,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 392 transitions, 5561 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-04 14:34:30,670 INFO L231 Difference]: Finished difference. Result has 319 places, 368 transitions, 4677 flow [2024-06-04 14:34:30,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4537, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4677, PETRI_PLACES=319, PETRI_TRANSITIONS=368} [2024-06-04 14:34:30,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-04 14:34:30,671 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 368 transitions, 4677 flow [2024-06-04 14:34:30,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:30,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:30,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:30,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:34:30,672 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)] === [2024-06-04 14:34:30,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:30,672 INFO L85 PathProgramCache]: Analyzing trace with hash -659013803, now seen corresponding path program 2 times [2024-06-04 14:34:30,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:30,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143795702] [2024-06-04 14:34:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:30,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143795702] [2024-06-04 14:34:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143795702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:32,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351854466] [2024-06-04 14:34:32,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:32,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:32,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:32,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 368 transitions, 4677 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:32,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:32,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:32,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:33,499 INFO L124 PetriNetUnfolderBase]: 966/1660 cut-off events. [2024-06-04 14:34:33,501 INFO L125 PetriNetUnfolderBase]: For 160460/160460 co-relation queries the response was YES. [2024-06-04 14:34:33,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13715 conditions, 1660 events. 966/1660 cut-off events. For 160460/160460 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8954 event pairs, 121 based on Foata normal form. 2/1661 useless extension candidates. Maximal degree in co-relation 13572. Up to 1456 conditions per place. [2024-06-04 14:34:33,520 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 335 selfloop transitions, 73 changer transitions 0/410 dead transitions. [2024-06-04 14:34:33,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 410 transitions, 5960 flow [2024-06-04 14:34:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:34:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:34:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 14:34:33,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 14:34:33,522 INFO L175 Difference]: Start difference. First operand has 319 places, 368 transitions, 4677 flow. Second operand 12 states and 142 transitions. [2024-06-04 14:34:33,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 410 transitions, 5960 flow [2024-06-04 14:34:34,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 410 transitions, 5839 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:34:34,162 INFO L231 Difference]: Finished difference. Result has 323 places, 383 transitions, 4913 flow [2024-06-04 14:34:34,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4913, PETRI_PLACES=323, PETRI_TRANSITIONS=383} [2024-06-04 14:34:34,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-04 14:34:34,163 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 383 transitions, 4913 flow [2024-06-04 14:34:34,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:34,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:34,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:34,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:34:34,163 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)] === [2024-06-04 14:34:34,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1683747825, now seen corresponding path program 3 times [2024-06-04 14:34:34,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:34,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162856612] [2024-06-04 14:34:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:34,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:35,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:35,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162856612] [2024-06-04 14:34:35,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162856612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:35,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:35,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:35,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485487093] [2024-06-04 14:34:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:35,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:35,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:35,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:35,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:35,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 383 transitions, 4913 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:35,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:35,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:35,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:36,236 INFO L124 PetriNetUnfolderBase]: 967/1663 cut-off events. [2024-06-04 14:34:36,236 INFO L125 PetriNetUnfolderBase]: For 164562/164562 co-relation queries the response was YES. [2024-06-04 14:34:36,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13629 conditions, 1663 events. 967/1663 cut-off events. For 164562/164562 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8995 event pairs, 124 based on Foata normal form. 4/1666 useless extension candidates. Maximal degree in co-relation 13485. Up to 1470 conditions per place. [2024-06-04 14:34:36,255 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 324 selfloop transitions, 80 changer transitions 0/406 dead transitions. [2024-06-04 14:34:36,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 406 transitions, 5789 flow [2024-06-04 14:34:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:34:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:34:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-04 14:34:36,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-04 14:34:36,256 INFO L175 Difference]: Start difference. First operand has 323 places, 383 transitions, 4913 flow. Second operand 13 states and 145 transitions. [2024-06-04 14:34:36,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 406 transitions, 5789 flow [2024-06-04 14:34:36,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 406 transitions, 5691 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:36,805 INFO L231 Difference]: Finished difference. Result has 329 places, 384 transitions, 4999 flow [2024-06-04 14:34:36,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4999, PETRI_PLACES=329, PETRI_TRANSITIONS=384} [2024-06-04 14:34:36,806 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-04 14:34:36,806 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 384 transitions, 4999 flow [2024-06-04 14:34:36,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:36,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:36,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:34:36,806 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)] === [2024-06-04 14:34:36,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2056028812, now seen corresponding path program 1 times [2024-06-04 14:34:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:36,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745690094] [2024-06-04 14:34:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:38,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:38,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745690094] [2024-06-04 14:34:38,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745690094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:38,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:38,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690761793] [2024-06-04 14:34:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:38,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:38,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:38,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 384 transitions, 4999 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:38,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:38,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:38,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:39,533 INFO L124 PetriNetUnfolderBase]: 961/1655 cut-off events. [2024-06-04 14:34:39,533 INFO L125 PetriNetUnfolderBase]: For 161492/161492 co-relation queries the response was YES. [2024-06-04 14:34:39,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13260 conditions, 1655 events. 961/1655 cut-off events. For 161492/161492 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8974 event pairs, 117 based on Foata normal form. 8/1662 useless extension candidates. Maximal degree in co-relation 13114. Up to 1514 conditions per place. [2024-06-04 14:34:39,552 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 346 selfloop transitions, 56 changer transitions 0/404 dead transitions. [2024-06-04 14:34:39,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 404 transitions, 5903 flow [2024-06-04 14:34:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:34:39,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 14:34:39,554 INFO L175 Difference]: Start difference. First operand has 329 places, 384 transitions, 4999 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:34:39,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 404 transitions, 5903 flow [2024-06-04 14:34:40,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 404 transitions, 5657 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-04 14:34:40,144 INFO L231 Difference]: Finished difference. Result has 329 places, 386 transitions, 4931 flow [2024-06-04 14:34:40,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4753, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4931, PETRI_PLACES=329, PETRI_TRANSITIONS=386} [2024-06-04 14:34:40,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-04 14:34:40,145 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 386 transitions, 4931 flow [2024-06-04 14:34:40,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:40,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:40,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:40,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:34:40,146 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)] === [2024-06-04 14:34:40,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -572321993, now seen corresponding path program 4 times [2024-06-04 14:34:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:40,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035563438] [2024-06-04 14:34:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:40,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035563438] [2024-06-04 14:34:41,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035563438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:41,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:41,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:41,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888273917] [2024-06-04 14:34:41,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:41,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:41,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:41,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:41,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:41,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 386 transitions, 4931 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:41,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:41,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:41,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:42,132 INFO L124 PetriNetUnfolderBase]: 958/1650 cut-off events. [2024-06-04 14:34:42,132 INFO L125 PetriNetUnfolderBase]: For 136255/136255 co-relation queries the response was YES. [2024-06-04 14:34:42,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12974 conditions, 1650 events. 958/1650 cut-off events. For 136255/136255 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8921 event pairs, 127 based on Foata normal form. 2/1651 useless extension candidates. Maximal degree in co-relation 12828. Up to 1501 conditions per place. [2024-06-04 14:34:42,154 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 355 selfloop transitions, 51 changer transitions 0/408 dead transitions. [2024-06-04 14:34:42,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 408 transitions, 5829 flow [2024-06-04 14:34:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:34:42,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 14:34:42,156 INFO L175 Difference]: Start difference. First operand has 329 places, 386 transitions, 4931 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:34:42,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 408 transitions, 5829 flow [2024-06-04 14:34:42,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 408 transitions, 5693 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:42,679 INFO L231 Difference]: Finished difference. Result has 332 places, 386 transitions, 4901 flow [2024-06-04 14:34:42,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4901, PETRI_PLACES=332, PETRI_TRANSITIONS=386} [2024-06-04 14:34:42,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-04 14:34:42,680 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 386 transitions, 4901 flow [2024-06-04 14:34:42,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:42,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:42,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:42,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:34:42,681 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)] === [2024-06-04 14:34:42,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1340659912, now seen corresponding path program 1 times [2024-06-04 14:34:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:42,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630372494] [2024-06-04 14:34:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:42,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:44,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:44,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630372494] [2024-06-04 14:34:44,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630372494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:44,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:44,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:44,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096293143] [2024-06-04 14:34:44,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:44,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:44,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:44,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:44,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:44,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:44,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 386 transitions, 4901 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:44,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:44,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:44,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:44,561 INFO L124 PetriNetUnfolderBase]: 962/1658 cut-off events. [2024-06-04 14:34:44,561 INFO L125 PetriNetUnfolderBase]: For 139314/139314 co-relation queries the response was YES. [2024-06-04 14:34:44,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12981 conditions, 1658 events. 962/1658 cut-off events. For 139314/139314 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9030 event pairs, 89 based on Foata normal form. 2/1659 useless extension candidates. Maximal degree in co-relation 12834. Up to 1426 conditions per place. [2024-06-04 14:34:44,584 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 327 selfloop transitions, 76 changer transitions 0/405 dead transitions. [2024-06-04 14:34:44,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 405 transitions, 5777 flow [2024-06-04 14:34:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:34:44,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 14:34:44,585 INFO L175 Difference]: Start difference. First operand has 332 places, 386 transitions, 4901 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:34:44,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 405 transitions, 5777 flow [2024-06-04 14:34:45,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 405 transitions, 5594 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:34:45,109 INFO L231 Difference]: Finished difference. Result has 331 places, 387 transitions, 4891 flow [2024-06-04 14:34:45,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4718, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4891, PETRI_PLACES=331, PETRI_TRANSITIONS=387} [2024-06-04 14:34:45,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-04 14:34:45,110 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 387 transitions, 4891 flow [2024-06-04 14:34:45,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:45,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:45,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:45,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:34:45,110 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)] === [2024-06-04 14:34:45,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1287545224, now seen corresponding path program 2 times [2024-06-04 14:34:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:45,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703294782] [2024-06-04 14:34:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:46,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:46,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703294782] [2024-06-04 14:34:46,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703294782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:46,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:46,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:46,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364643100] [2024-06-04 14:34:46,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:46,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:46,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:47,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:47,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 387 transitions, 4891 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:47,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:47,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:47,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:47,937 INFO L124 PetriNetUnfolderBase]: 968/1668 cut-off events. [2024-06-04 14:34:47,937 INFO L125 PetriNetUnfolderBase]: For 144052/144052 co-relation queries the response was YES. [2024-06-04 14:34:47,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13060 conditions, 1668 events. 968/1668 cut-off events. For 144052/144052 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9128 event pairs, 77 based on Foata normal form. 2/1669 useless extension candidates. Maximal degree in co-relation 12914. Up to 1109 conditions per place. [2024-06-04 14:34:47,955 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 164 changer transitions 0/408 dead transitions. [2024-06-04 14:34:47,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 408 transitions, 5819 flow [2024-06-04 14:34:47,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 14:34:47,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 14:34:47,957 INFO L175 Difference]: Start difference. First operand has 331 places, 387 transitions, 4891 flow. Second operand 11 states and 138 transitions. [2024-06-04 14:34:47,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 408 transitions, 5819 flow [2024-06-04 14:34:48,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 408 transitions, 5664 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:48,492 INFO L231 Difference]: Finished difference. Result has 335 places, 389 transitions, 5126 flow [2024-06-04 14:34:48,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5126, PETRI_PLACES=335, PETRI_TRANSITIONS=389} [2024-06-04 14:34:48,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-04 14:34:48,493 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 389 transitions, 5126 flow [2024-06-04 14:34:48,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:48,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:48,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:48,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:34:48,494 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)] === [2024-06-04 14:34:48,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1287752614, now seen corresponding path program 3 times [2024-06-04 14:34:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:48,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388355257] [2024-06-04 14:34:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:48,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:49,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:49,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388355257] [2024-06-04 14:34:49,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388355257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:49,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:49,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:49,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615738361] [2024-06-04 14:34:49,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:49,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:49,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:50,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:50,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 389 transitions, 5126 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:50,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:50,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:50,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:50,686 INFO L124 PetriNetUnfolderBase]: 984/1694 cut-off events. [2024-06-04 14:34:50,686 INFO L125 PetriNetUnfolderBase]: For 156242/156242 co-relation queries the response was YES. [2024-06-04 14:34:50,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13721 conditions, 1694 events. 984/1694 cut-off events. For 156242/156242 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9277 event pairs, 77 based on Foata normal form. 2/1695 useless extension candidates. Maximal degree in co-relation 13574. Up to 1109 conditions per place. [2024-06-04 14:34:50,707 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 162 changer transitions 0/414 dead transitions. [2024-06-04 14:34:50,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 414 transitions, 6300 flow [2024-06-04 14:34:50,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 14:34:50,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 14:34:50,709 INFO L175 Difference]: Start difference. First operand has 335 places, 389 transitions, 5126 flow. Second operand 11 states and 142 transitions. [2024-06-04 14:34:50,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 414 transitions, 6300 flow [2024-06-04 14:34:51,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 414 transitions, 5985 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:51,417 INFO L231 Difference]: Finished difference. Result has 340 places, 393 transitions, 5262 flow [2024-06-04 14:34:51,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4811, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5262, PETRI_PLACES=340, PETRI_TRANSITIONS=393} [2024-06-04 14:34:51,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 14:34:51,420 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 393 transitions, 5262 flow [2024-06-04 14:34:51,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:51,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:51,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:51,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:34:51,420 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)] === [2024-06-04 14:34:51,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:51,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1293109414, now seen corresponding path program 4 times [2024-06-04 14:34:51,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:51,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963710067] [2024-06-04 14:34:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:51,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:53,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963710067] [2024-06-04 14:34:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963710067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:53,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:53,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409507496] [2024-06-04 14:34:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:53,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:53,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:53,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 393 transitions, 5262 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:53,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:53,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:53,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:54,249 INFO L124 PetriNetUnfolderBase]: 990/1704 cut-off events. [2024-06-04 14:34:54,250 INFO L125 PetriNetUnfolderBase]: For 160319/160319 co-relation queries the response was YES. [2024-06-04 14:34:54,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13889 conditions, 1704 events. 990/1704 cut-off events. For 160319/160319 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9327 event pairs, 174 based on Foata normal form. 2/1705 useless extension candidates. Maximal degree in co-relation 13740. Up to 1356 conditions per place. [2024-06-04 14:34:54,272 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 314 selfloop transitions, 97 changer transitions 0/413 dead transitions. [2024-06-04 14:34:54,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 413 transitions, 6210 flow [2024-06-04 14:34:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:34:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:34:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 14:34:54,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:34:54,273 INFO L175 Difference]: Start difference. First operand has 340 places, 393 transitions, 5262 flow. Second operand 12 states and 144 transitions. [2024-06-04 14:34:54,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 413 transitions, 6210 flow [2024-06-04 14:34:55,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 413 transitions, 5833 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:34:55,032 INFO L231 Difference]: Finished difference. Result has 343 places, 395 transitions, 5148 flow [2024-06-04 14:34:55,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4885, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5148, PETRI_PLACES=343, PETRI_TRANSITIONS=395} [2024-06-04 14:34:55,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 14:34:55,033 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 395 transitions, 5148 flow [2024-06-04 14:34:55,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:55,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:55,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:55,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:34:55,034 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)] === [2024-06-04 14:34:55,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:55,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1287752769, now seen corresponding path program 5 times [2024-06-04 14:34:55,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:55,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559000782] [2024-06-04 14:34:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:55,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559000782] [2024-06-04 14:34:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559000782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:56,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:56,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:56,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82873821] [2024-06-04 14:34:56,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:56,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:56,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:56,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 395 transitions, 5148 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:56,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:56,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:56,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:56,844 INFO L124 PetriNetUnfolderBase]: 994/1712 cut-off events. [2024-06-04 14:34:56,844 INFO L125 PetriNetUnfolderBase]: For 161545/161545 co-relation queries the response was YES. [2024-06-04 14:34:56,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13713 conditions, 1712 events. 994/1712 cut-off events. For 161545/161545 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9363 event pairs, 114 based on Foata normal form. 2/1713 useless extension candidates. Maximal degree in co-relation 13564. Up to 1388 conditions per place. [2024-06-04 14:34:56,865 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 292 selfloop transitions, 119 changer transitions 0/413 dead transitions. [2024-06-04 14:34:56,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 413 transitions, 6030 flow [2024-06-04 14:34:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:56,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:34:56,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:34:56,866 INFO L175 Difference]: Start difference. First operand has 343 places, 395 transitions, 5148 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:34:56,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 413 transitions, 6030 flow [2024-06-04 14:34:57,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 413 transitions, 5787 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-04 14:34:57,506 INFO L231 Difference]: Finished difference. Result has 344 places, 396 transitions, 5161 flow [2024-06-04 14:34:57,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4905, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5161, PETRI_PLACES=344, PETRI_TRANSITIONS=396} [2024-06-04 14:34:57,506 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-04 14:34:57,506 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 396 transitions, 5161 flow [2024-06-04 14:34:57,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:57,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:57,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:57,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:34:57,507 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)] === [2024-06-04 14:34:57,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1293263019, now seen corresponding path program 6 times [2024-06-04 14:34:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:57,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216574848] [2024-06-04 14:34:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:57,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:58,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216574848] [2024-06-04 14:34:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216574848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:58,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207873025] [2024-06-04 14:34:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:58,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:58,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:58,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:34:58,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 396 transitions, 5161 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:58,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:58,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:34:58,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:59,086 INFO L124 PetriNetUnfolderBase]: 1005/1733 cut-off events. [2024-06-04 14:34:59,087 INFO L125 PetriNetUnfolderBase]: For 172864/172864 co-relation queries the response was YES. [2024-06-04 14:34:59,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13997 conditions, 1733 events. 1005/1733 cut-off events. For 172864/172864 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9502 event pairs, 115 based on Foata normal form. 2/1734 useless extension candidates. Maximal degree in co-relation 13847. Up to 1217 conditions per place. [2024-06-04 14:34:59,108 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 139 changer transitions 0/417 dead transitions. [2024-06-04 14:34:59,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 417 transitions, 6257 flow [2024-06-04 14:34:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 14:34:59,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 14:34:59,109 INFO L175 Difference]: Start difference. First operand has 344 places, 396 transitions, 5161 flow. Second operand 10 states and 131 transitions. [2024-06-04 14:34:59,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 417 transitions, 6257 flow [2024-06-04 14:34:59,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 417 transitions, 6001 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 14:34:59,788 INFO L231 Difference]: Finished difference. Result has 345 places, 398 transitions, 5217 flow [2024-06-04 14:34:59,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4905, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5217, PETRI_PLACES=345, PETRI_TRANSITIONS=398} [2024-06-04 14:34:59,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-04 14:34:59,789 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 398 transitions, 5217 flow [2024-06-04 14:34:59,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:59,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:59,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:59,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:34:59,790 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)] === [2024-06-04 14:34:59,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1287747034, now seen corresponding path program 5 times [2024-06-04 14:34:59,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:59,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128504966] [2024-06-04 14:34:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:59,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:01,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:01,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128504966] [2024-06-04 14:35:01,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128504966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:01,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:01,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:01,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046092361] [2024-06-04 14:35:01,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:01,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:01,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:01,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:01,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:01,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:01,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 398 transitions, 5217 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:01,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:01,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:01,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:02,320 INFO L124 PetriNetUnfolderBase]: 1001/1727 cut-off events. [2024-06-04 14:35:02,320 INFO L125 PetriNetUnfolderBase]: For 168274/168274 co-relation queries the response was YES. [2024-06-04 14:35:02,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13835 conditions, 1727 events. 1001/1727 cut-off events. For 168274/168274 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9489 event pairs, 67 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 13684. Up to 1143 conditions per place. [2024-06-04 14:35:02,341 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 252 selfloop transitions, 164 changer transitions 0/418 dead transitions. [2024-06-04 14:35:02,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 418 transitions, 6119 flow [2024-06-04 14:35:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 14:35:02,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 14:35:02,363 INFO L175 Difference]: Start difference. First operand has 345 places, 398 transitions, 5217 flow. Second operand 11 states and 141 transitions. [2024-06-04 14:35:02,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 418 transitions, 6119 flow [2024-06-04 14:35:03,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 418 transitions, 5905 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-04 14:35:03,059 INFO L231 Difference]: Finished difference. Result has 350 places, 398 transitions, 5337 flow [2024-06-04 14:35:03,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5003, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5337, PETRI_PLACES=350, PETRI_TRANSITIONS=398} [2024-06-04 14:35:03,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-04 14:35:03,060 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 398 transitions, 5337 flow [2024-06-04 14:35:03,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:03,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:03,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:03,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:35:03,061 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)] === [2024-06-04 14:35:03,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1293259144, now seen corresponding path program 6 times [2024-06-04 14:35:03,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:03,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289806434] [2024-06-04 14:35:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:04,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:04,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289806434] [2024-06-04 14:35:04,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289806434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:04,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:04,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:04,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485910788] [2024-06-04 14:35:04,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:04,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:04,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:04,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:04,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 398 transitions, 5337 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:04,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:04,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:04,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:05,064 INFO L124 PetriNetUnfolderBase]: 1020/1758 cut-off events. [2024-06-04 14:35:05,064 INFO L125 PetriNetUnfolderBase]: For 181334/181334 co-relation queries the response was YES. [2024-06-04 14:35:05,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14586 conditions, 1758 events. 1020/1758 cut-off events. For 181334/181334 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9671 event pairs, 71 based on Foata normal form. 2/1759 useless extension candidates. Maximal degree in co-relation 14433. Up to 1092 conditions per place. [2024-06-04 14:35:05,086 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 180 changer transitions 0/427 dead transitions. [2024-06-04 14:35:05,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 427 transitions, 6595 flow [2024-06-04 14:35:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 14:35:05,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 14:35:05,089 INFO L175 Difference]: Start difference. First operand has 350 places, 398 transitions, 5337 flow. Second operand 11 states and 146 transitions. [2024-06-04 14:35:05,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 427 transitions, 6595 flow [2024-06-04 14:35:05,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 427 transitions, 6253 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:35:05,844 INFO L231 Difference]: Finished difference. Result has 353 places, 406 transitions, 5628 flow [2024-06-04 14:35:05,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4995, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5628, PETRI_PLACES=353, PETRI_TRANSITIONS=406} [2024-06-04 14:35:05,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-04 14:35:05,845 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 406 transitions, 5628 flow [2024-06-04 14:35:05,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:05,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:05,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:05,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:35:05,847 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)] === [2024-06-04 14:35:05,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:05,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1334937901, now seen corresponding path program 7 times [2024-06-04 14:35:05,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:05,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557963811] [2024-06-04 14:35:05,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:05,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:07,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557963811] [2024-06-04 14:35:07,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557963811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:07,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:07,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:07,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102198204] [2024-06-04 14:35:07,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:07,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:07,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:07,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:07,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:07,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:07,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 406 transitions, 5628 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:07,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:07,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:07,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:08,107 INFO L124 PetriNetUnfolderBase]: 1024/1766 cut-off events. [2024-06-04 14:35:08,108 INFO L125 PetriNetUnfolderBase]: For 185816/185816 co-relation queries the response was YES. [2024-06-04 14:35:08,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14950 conditions, 1766 events. 1024/1766 cut-off events. For 185816/185816 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9768 event pairs, 117 based on Foata normal form. 2/1767 useless extension candidates. Maximal degree in co-relation 14794. Up to 1429 conditions per place. [2024-06-04 14:35:08,132 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 303 selfloop transitions, 119 changer transitions 0/424 dead transitions. [2024-06-04 14:35:08,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 424 transitions, 6530 flow [2024-06-04 14:35:08,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:35:08,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:35:08,134 INFO L175 Difference]: Start difference. First operand has 353 places, 406 transitions, 5628 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:35:08,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 424 transitions, 6530 flow [2024-06-04 14:35:08,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 424 transitions, 6391 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-04 14:35:08,903 INFO L231 Difference]: Finished difference. Result has 360 places, 407 transitions, 5743 flow [2024-06-04 14:35:08,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5489, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5743, PETRI_PLACES=360, PETRI_TRANSITIONS=407} [2024-06-04 14:35:08,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-04 14:35:08,904 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 407 transitions, 5743 flow [2024-06-04 14:35:08,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:08,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:08,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:35:08,905 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)] === [2024-06-04 14:35:08,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1316648025, now seen corresponding path program 8 times [2024-06-04 14:35:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893311060] [2024-06-04 14:35:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:10,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:10,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893311060] [2024-06-04 14:35:10,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893311060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:10,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:10,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:10,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816836274] [2024-06-04 14:35:10,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:10,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:10,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:10,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:10,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 407 transitions, 5743 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:10,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:10,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:10,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:11,042 INFO L124 PetriNetUnfolderBase]: 1021/1761 cut-off events. [2024-06-04 14:35:11,043 INFO L125 PetriNetUnfolderBase]: For 180098/180098 co-relation queries the response was YES. [2024-06-04 14:35:11,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14920 conditions, 1761 events. 1021/1761 cut-off events. For 180098/180098 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9735 event pairs, 114 based on Foata normal form. 2/1762 useless extension candidates. Maximal degree in co-relation 14762. Up to 1437 conditions per place. [2024-06-04 14:35:11,066 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 307 selfloop transitions, 115 changer transitions 0/424 dead transitions. [2024-06-04 14:35:11,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 424 transitions, 6635 flow [2024-06-04 14:35:11,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:35:11,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:35:11,068 INFO L175 Difference]: Start difference. First operand has 360 places, 407 transitions, 5743 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:35:11,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 424 transitions, 6635 flow [2024-06-04 14:35:11,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 424 transitions, 6397 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 14:35:11,750 INFO L231 Difference]: Finished difference. Result has 361 places, 407 transitions, 5739 flow [2024-06-04 14:35:11,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5739, PETRI_PLACES=361, PETRI_TRANSITIONS=407} [2024-06-04 14:35:11,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-04 14:35:11,751 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 407 transitions, 5739 flow [2024-06-04 14:35:11,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:11,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:11,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:11,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:35:11,751 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)] === [2024-06-04 14:35:11,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:11,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1293114994, now seen corresponding path program 7 times [2024-06-04 14:35:11,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:11,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269548364] [2024-06-04 14:35:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:11,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:13,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:13,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269548364] [2024-06-04 14:35:13,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269548364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:13,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:13,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:13,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568817785] [2024-06-04 14:35:13,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:13,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:13,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:13,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:13,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:13,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:13,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 407 transitions, 5739 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:13,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:13,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:13,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:14,121 INFO L124 PetriNetUnfolderBase]: 1017/1755 cut-off events. [2024-06-04 14:35:14,122 INFO L125 PetriNetUnfolderBase]: For 175097/175097 co-relation queries the response was YES. [2024-06-04 14:35:14,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14693 conditions, 1755 events. 1017/1755 cut-off events. For 175097/175097 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9754 event pairs, 82 based on Foata normal form. 2/1756 useless extension candidates. Maximal degree in co-relation 14537. Up to 1178 conditions per place. [2024-06-04 14:35:14,145 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 158 changer transitions 0/429 dead transitions. [2024-06-04 14:35:14,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 429 transitions, 6863 flow [2024-06-04 14:35:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 14:35:14,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 14:35:14,146 INFO L175 Difference]: Start difference. First operand has 361 places, 407 transitions, 5739 flow. Second operand 11 states and 145 transitions. [2024-06-04 14:35:14,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 429 transitions, 6863 flow [2024-06-04 14:35:14,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 429 transitions, 6575 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:35:14,761 INFO L231 Difference]: Finished difference. Result has 360 places, 407 transitions, 5772 flow [2024-06-04 14:35:14,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5451, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5772, PETRI_PLACES=360, PETRI_TRANSITIONS=407} [2024-06-04 14:35:14,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-04 14:35:14,762 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 407 transitions, 5772 flow [2024-06-04 14:35:14,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:14,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:14,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:14,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:35:14,763 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)] === [2024-06-04 14:35:14,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:14,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2120187257, now seen corresponding path program 9 times [2024-06-04 14:35:14,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:14,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577921063] [2024-06-04 14:35:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:14,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577921063] [2024-06-04 14:35:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577921063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:15,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:15,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392541495] [2024-06-04 14:35:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:15,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:16,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:16,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 407 transitions, 5772 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:16,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:16,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:16,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:16,716 INFO L124 PetriNetUnfolderBase]: 1064/1848 cut-off events. [2024-06-04 14:35:16,716 INFO L125 PetriNetUnfolderBase]: For 243795/243795 co-relation queries the response was YES. [2024-06-04 14:35:16,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16643 conditions, 1848 events. 1064/1848 cut-off events. For 243795/243795 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10297 event pairs, 163 based on Foata normal form. 2/1849 useless extension candidates. Maximal degree in co-relation 16486. Up to 1548 conditions per place. [2024-06-04 14:35:16,741 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 365 selfloop transitions, 69 changer transitions 0/436 dead transitions. [2024-06-04 14:35:16,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 436 transitions, 7012 flow [2024-06-04 14:35:16,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:16,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:16,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 14:35:16,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:35:16,743 INFO L175 Difference]: Start difference. First operand has 360 places, 407 transitions, 5772 flow. Second operand 11 states and 143 transitions. [2024-06-04 14:35:16,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 436 transitions, 7012 flow [2024-06-04 14:35:17,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 436 transitions, 6513 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-04 14:35:17,687 INFO L231 Difference]: Finished difference. Result has 359 places, 409 transitions, 5449 flow [2024-06-04 14:35:17,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5273, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5449, PETRI_PLACES=359, PETRI_TRANSITIONS=409} [2024-06-04 14:35:17,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 14:35:17,688 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 409 transitions, 5449 flow [2024-06-04 14:35:17,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:17,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:17,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:17,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:35:17,689 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)] === [2024-06-04 14:35:17,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2120039387, now seen corresponding path program 10 times [2024-06-04 14:35:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:17,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632612665] [2024-06-04 14:35:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:17,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:19,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632612665] [2024-06-04 14:35:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632612665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:19,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:19,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570420996] [2024-06-04 14:35:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:19,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:19,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:19,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:19,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:19,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 409 transitions, 5449 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:19,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:19,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:19,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:20,106 INFO L124 PetriNetUnfolderBase]: 1071/1861 cut-off events. [2024-06-04 14:35:20,107 INFO L125 PetriNetUnfolderBase]: For 246747/246747 co-relation queries the response was YES. [2024-06-04 14:35:20,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16347 conditions, 1861 events. 1071/1861 cut-off events. For 246747/246747 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10459 event pairs, 165 based on Foata normal form. 2/1862 useless extension candidates. Maximal degree in co-relation 16190. Up to 1697 conditions per place. [2024-06-04 14:35:20,133 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 366 selfloop transitions, 63 changer transitions 0/431 dead transitions. [2024-06-04 14:35:20,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 431 transitions, 6412 flow [2024-06-04 14:35:20,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:35:20,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 14:35:20,135 INFO L175 Difference]: Start difference. First operand has 359 places, 409 transitions, 5449 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:35:20,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 431 transitions, 6412 flow [2024-06-04 14:35:21,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 431 transitions, 6325 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-04 14:35:21,253 INFO L231 Difference]: Finished difference. Result has 366 places, 412 transitions, 5545 flow [2024-06-04 14:35:21,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5368, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5545, PETRI_PLACES=366, PETRI_TRANSITIONS=412} [2024-06-04 14:35:21,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-04 14:35:21,254 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 412 transitions, 5545 flow [2024-06-04 14:35:21,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:21,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:21,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:21,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:35:21,254 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)] === [2024-06-04 14:35:21,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1913112806, now seen corresponding path program 2 times [2024-06-04 14:35:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:21,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38424042] [2024-06-04 14:35:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:22,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38424042] [2024-06-04 14:35:22,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38424042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:22,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:22,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:22,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711253322] [2024-06-04 14:35:22,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:22,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:22,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:22,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 412 transitions, 5545 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:22,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:22,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:22,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:23,256 INFO L124 PetriNetUnfolderBase]: 1075/1869 cut-off events. [2024-06-04 14:35:23,256 INFO L125 PetriNetUnfolderBase]: For 251795/251795 co-relation queries the response was YES. [2024-06-04 14:35:23,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16524 conditions, 1869 events. 1075/1869 cut-off events. For 251795/251795 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10503 event pairs, 163 based on Foata normal form. 2/1870 useless extension candidates. Maximal degree in co-relation 16364. Up to 1767 conditions per place. [2024-06-04 14:35:23,280 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 392 selfloop transitions, 37 changer transitions 0/431 dead transitions. [2024-06-04 14:35:23,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 431 transitions, 6507 flow [2024-06-04 14:35:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:35:23,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 14:35:23,281 INFO L175 Difference]: Start difference. First operand has 366 places, 412 transitions, 5545 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:35:23,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 431 transitions, 6507 flow [2024-06-04 14:35:24,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 431 transitions, 6322 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:24,278 INFO L231 Difference]: Finished difference. Result has 368 places, 415 transitions, 5507 flow [2024-06-04 14:35:24,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5507, PETRI_PLACES=368, PETRI_TRANSITIONS=415} [2024-06-04 14:35:24,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-04 14:35:24,279 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 415 transitions, 5507 flow [2024-06-04 14:35:24,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:24,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:24,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:24,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:35:24,280 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)] === [2024-06-04 14:35:24,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash -453413441, now seen corresponding path program 11 times [2024-06-04 14:35:24,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599758288] [2024-06-04 14:35:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:25,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:25,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599758288] [2024-06-04 14:35:25,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599758288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:25,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:25,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139184658] [2024-06-04 14:35:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:25,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:25,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:25,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:25,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:25,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:25,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 415 transitions, 5507 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:25,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:25,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:25,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:25,980 INFO L124 PetriNetUnfolderBase]: 1079/1877 cut-off events. [2024-06-04 14:35:25,981 INFO L125 PetriNetUnfolderBase]: For 256598/256598 co-relation queries the response was YES. [2024-06-04 14:35:26,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16461 conditions, 1877 events. 1079/1877 cut-off events. For 256598/256598 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10583 event pairs, 165 based on Foata normal form. 2/1878 useless extension candidates. Maximal degree in co-relation 16300. Up to 1675 conditions per place. [2024-06-04 14:35:26,008 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 366 selfloop transitions, 66 changer transitions 0/434 dead transitions. [2024-06-04 14:35:26,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 434 transitions, 6447 flow [2024-06-04 14:35:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 14:35:26,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 14:35:26,013 INFO L175 Difference]: Start difference. First operand has 368 places, 415 transitions, 5507 flow. Second operand 10 states and 126 transitions. [2024-06-04 14:35:26,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 434 transitions, 6447 flow [2024-06-04 14:35:26,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 434 transitions, 6370 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:35:26,919 INFO L231 Difference]: Finished difference. Result has 371 places, 416 transitions, 5586 flow [2024-06-04 14:35:26,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5430, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5586, PETRI_PLACES=371, PETRI_TRANSITIONS=416} [2024-06-04 14:35:26,920 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-04 14:35:26,920 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 416 transitions, 5586 flow [2024-06-04 14:35:26,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:26,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:26,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:26,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:35:26,920 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)] === [2024-06-04 14:35:26,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash -253752020, now seen corresponding path program 3 times [2024-06-04 14:35:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522236117] [2024-06-04 14:35:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:26,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:28,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:28,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522236117] [2024-06-04 14:35:28,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522236117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:28,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:28,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:28,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414259104] [2024-06-04 14:35:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:28,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:28,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:28,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:28,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:28,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 416 transitions, 5586 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:28,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:28,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:28,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:29,424 INFO L124 PetriNetUnfolderBase]: 1083/1885 cut-off events. [2024-06-04 14:35:29,425 INFO L125 PetriNetUnfolderBase]: For 261894/261894 co-relation queries the response was YES. [2024-06-04 14:35:29,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16622 conditions, 1885 events. 1083/1885 cut-off events. For 261894/261894 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10626 event pairs, 161 based on Foata normal form. 2/1886 useless extension candidates. Maximal degree in co-relation 16460. Up to 1767 conditions per place. [2024-06-04 14:35:29,448 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 389 selfloop transitions, 43 changer transitions 0/434 dead transitions. [2024-06-04 14:35:29,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 434 transitions, 6524 flow [2024-06-04 14:35:29,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:35:29,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:35:29,450 INFO L175 Difference]: Start difference. First operand has 371 places, 416 transitions, 5586 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:35:29,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 434 transitions, 6524 flow [2024-06-04 14:35:30,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 434 transitions, 6382 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:30,347 INFO L231 Difference]: Finished difference. Result has 373 places, 417 transitions, 5555 flow [2024-06-04 14:35:30,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5444, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5555, PETRI_PLACES=373, PETRI_TRANSITIONS=417} [2024-06-04 14:35:30,348 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-04 14:35:30,348 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 417 transitions, 5555 flow [2024-06-04 14:35:30,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:30,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:30,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:30,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:35:30,348 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)] === [2024-06-04 14:35:30,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash -447691430, now seen corresponding path program 4 times [2024-06-04 14:35:30,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:30,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658638841] [2024-06-04 14:35:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:30,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:31,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:31,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658638841] [2024-06-04 14:35:31,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658638841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:31,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:31,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:31,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734293072] [2024-06-04 14:35:31,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:31,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:31,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:31,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:31,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 417 transitions, 5555 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:31,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:31,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:31,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:32,436 INFO L124 PetriNetUnfolderBase]: 1087/1893 cut-off events. [2024-06-04 14:35:32,436 INFO L125 PetriNetUnfolderBase]: For 262012/262012 co-relation queries the response was YES. [2024-06-04 14:35:32,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16615 conditions, 1893 events. 1087/1893 cut-off events. For 262012/262012 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10729 event pairs, 157 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 16452. Up to 1751 conditions per place. [2024-06-04 14:35:32,460 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 382 selfloop transitions, 51 changer transitions 0/435 dead transitions. [2024-06-04 14:35:32,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 435 transitions, 6497 flow [2024-06-04 14:35:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 14:35:32,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 14:35:32,461 INFO L175 Difference]: Start difference. First operand has 373 places, 417 transitions, 5555 flow. Second operand 10 states and 122 transitions. [2024-06-04 14:35:32,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 435 transitions, 6497 flow [2024-06-04 14:35:33,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 435 transitions, 6398 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:33,461 INFO L231 Difference]: Finished difference. Result has 375 places, 418 transitions, 5585 flow [2024-06-04 14:35:33,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5456, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5585, PETRI_PLACES=375, PETRI_TRANSITIONS=418} [2024-06-04 14:35:33,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-04 14:35:33,462 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 418 transitions, 5585 flow [2024-06-04 14:35:33,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:33,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:33,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:33,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:35:33,463 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)] === [2024-06-04 14:35:33,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:33,463 INFO L85 PathProgramCache]: Analyzing trace with hash -453263556, now seen corresponding path program 8 times [2024-06-04 14:35:33,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:33,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673150563] [2024-06-04 14:35:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:33,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:34,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:34,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673150563] [2024-06-04 14:35:34,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673150563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:34,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:34,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333326233] [2024-06-04 14:35:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:34,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:34,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:34,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:34,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:34,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:34,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 418 transitions, 5585 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:34,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:34,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:34,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:35,413 INFO L124 PetriNetUnfolderBase]: 1083/1887 cut-off events. [2024-06-04 14:35:35,413 INFO L125 PetriNetUnfolderBase]: For 256435/256435 co-relation queries the response was YES. [2024-06-04 14:35:35,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16425 conditions, 1887 events. 1083/1887 cut-off events. For 256435/256435 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10669 event pairs, 152 based on Foata normal form. 2/1888 useless extension candidates. Maximal degree in co-relation 16261. Up to 1531 conditions per place. [2024-06-04 14:35:35,436 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 353 selfloop transitions, 82 changer transitions 0/437 dead transitions. [2024-06-04 14:35:35,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 437 transitions, 6725 flow [2024-06-04 14:35:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 14:35:35,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-04 14:35:35,438 INFO L175 Difference]: Start difference. First operand has 375 places, 418 transitions, 5585 flow. Second operand 10 states and 129 transitions. [2024-06-04 14:35:35,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 437 transitions, 6725 flow [2024-06-04 14:35:36,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 437 transitions, 6586 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:36,545 INFO L231 Difference]: Finished difference. Result has 377 places, 418 transitions, 5622 flow [2024-06-04 14:35:36,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5446, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5622, PETRI_PLACES=377, PETRI_TRANSITIONS=418} [2024-06-04 14:35:36,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-04 14:35:36,546 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 418 transitions, 5622 flow [2024-06-04 14:35:36,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:36,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:36,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:36,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:35:36,546 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)] === [2024-06-04 14:35:36,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash -447699366, now seen corresponding path program 9 times [2024-06-04 14:35:36,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:36,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903523071] [2024-06-04 14:35:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:36,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:38,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:38,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903523071] [2024-06-04 14:35:38,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903523071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:38,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:38,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183259616] [2024-06-04 14:35:38,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:38,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:38,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:38,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:38,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:38,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 418 transitions, 5622 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:38,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:38,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:38,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:39,279 INFO L124 PetriNetUnfolderBase]: 1089/1897 cut-off events. [2024-06-04 14:35:39,279 INFO L125 PetriNetUnfolderBase]: For 261911/261911 co-relation queries the response was YES. [2024-06-04 14:35:39,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16580 conditions, 1897 events. 1089/1897 cut-off events. For 261911/261911 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10741 event pairs, 158 based on Foata normal form. 2/1898 useless extension candidates. Maximal degree in co-relation 16415. Up to 1640 conditions per place. [2024-06-04 14:35:39,305 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 357 selfloop transitions, 80 changer transitions 0/439 dead transitions. [2024-06-04 14:35:39,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 439 transitions, 6606 flow [2024-06-04 14:35:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:35:39,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:35:39,306 INFO L175 Difference]: Start difference. First operand has 377 places, 418 transitions, 5622 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:35:39,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 439 transitions, 6606 flow [2024-06-04 14:35:40,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 439 transitions, 6432 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:40,349 INFO L231 Difference]: Finished difference. Result has 379 places, 420 transitions, 5660 flow [2024-06-04 14:35:40,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5452, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5660, PETRI_PLACES=379, PETRI_TRANSITIONS=420} [2024-06-04 14:35:40,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-04 14:35:40,350 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 420 transitions, 5660 flow [2024-06-04 14:35:40,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:40,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:40,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:40,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:35:40,351 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)] === [2024-06-04 14:35:40,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash -246333410, now seen corresponding path program 5 times [2024-06-04 14:35:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:40,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294647921] [2024-06-04 14:35:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294647921] [2024-06-04 14:35:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294647921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:41,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:41,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:41,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825193761] [2024-06-04 14:35:41,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:41,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:41,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:41,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:41,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:41,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:41,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 420 transitions, 5660 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:41,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:41,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:41,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:42,462 INFO L124 PetriNetUnfolderBase]: 1093/1905 cut-off events. [2024-06-04 14:35:42,462 INFO L125 PetriNetUnfolderBase]: For 261822/261822 co-relation queries the response was YES. [2024-06-04 14:35:42,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16625 conditions, 1905 events. 1093/1905 cut-off events. For 261822/261822 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10789 event pairs, 168 based on Foata normal form. 2/1906 useless extension candidates. Maximal degree in co-relation 16460. Up to 1814 conditions per place. [2024-06-04 14:35:42,485 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 401 selfloop transitions, 33 changer transitions 0/436 dead transitions. [2024-06-04 14:35:42,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 436 transitions, 6592 flow [2024-06-04 14:35:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:35:42,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 14:35:42,486 INFO L175 Difference]: Start difference. First operand has 379 places, 420 transitions, 5660 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:35:42,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 436 transitions, 6592 flow [2024-06-04 14:35:43,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 436 transitions, 6408 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:43,401 INFO L231 Difference]: Finished difference. Result has 380 places, 421 transitions, 5570 flow [2024-06-04 14:35:43,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5476, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5570, PETRI_PLACES=380, PETRI_TRANSITIONS=421} [2024-06-04 14:35:43,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-04 14:35:43,401 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 421 transitions, 5570 flow [2024-06-04 14:35:43,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:43,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:43,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:43,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:35:43,402 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)] === [2024-06-04 14:35:43,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash -253759956, now seen corresponding path program 10 times [2024-06-04 14:35:43,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:43,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66636314] [2024-06-04 14:35:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:43,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:44,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66636314] [2024-06-04 14:35:44,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66636314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:44,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:44,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:44,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993775260] [2024-06-04 14:35:44,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:44,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:44,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:44,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:44,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:44,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 421 transitions, 5570 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:44,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:44,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:44,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:45,581 INFO L124 PetriNetUnfolderBase]: 1099/1915 cut-off events. [2024-06-04 14:35:45,581 INFO L125 PetriNetUnfolderBase]: For 266407/266407 co-relation queries the response was YES. [2024-06-04 14:35:45,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16596 conditions, 1915 events. 1099/1915 cut-off events. For 266407/266407 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10880 event pairs, 166 based on Foata normal form. 2/1916 useless extension candidates. Maximal degree in co-relation 16430. Up to 1740 conditions per place. [2024-06-04 14:35:45,606 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 384 selfloop transitions, 56 changer transitions 0/442 dead transitions. [2024-06-04 14:35:45,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 442 transitions, 6556 flow [2024-06-04 14:35:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:35:45,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 14:35:45,607 INFO L175 Difference]: Start difference. First operand has 380 places, 421 transitions, 5570 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:35:45,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 442 transitions, 6556 flow [2024-06-04 14:35:46,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 442 transitions, 6472 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:46,658 INFO L231 Difference]: Finished difference. Result has 383 places, 423 transitions, 5646 flow [2024-06-04 14:35:46,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5646, PETRI_PLACES=383, PETRI_TRANSITIONS=423} [2024-06-04 14:35:46,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-04 14:35:46,659 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 423 transitions, 5646 flow [2024-06-04 14:35:46,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:46,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:46,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:46,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:35:46,660 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)] === [2024-06-04 14:35:46,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:46,660 INFO L85 PathProgramCache]: Analyzing trace with hash -447901176, now seen corresponding path program 11 times [2024-06-04 14:35:46,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:46,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607608163] [2024-06-04 14:35:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:46,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:48,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607608163] [2024-06-04 14:35:48,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607608163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:48,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:48,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:48,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253690999] [2024-06-04 14:35:48,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:48,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:48,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:48,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:48,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:48,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:48,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 423 transitions, 5646 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:48,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:48,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:48,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:49,238 INFO L124 PetriNetUnfolderBase]: 1095/1909 cut-off events. [2024-06-04 14:35:49,238 INFO L125 PetriNetUnfolderBase]: For 260648/260648 co-relation queries the response was YES. [2024-06-04 14:35:49,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16436 conditions, 1909 events. 1095/1909 cut-off events. For 260648/260648 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10846 event pairs, 156 based on Foata normal form. 2/1910 useless extension candidates. Maximal degree in co-relation 16269. Up to 1539 conditions per place. [2024-06-04 14:35:49,262 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 358 selfloop transitions, 84 changer transitions 0/444 dead transitions. [2024-06-04 14:35:49,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 444 transitions, 6816 flow [2024-06-04 14:35:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 14:35:49,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:35:49,264 INFO L175 Difference]: Start difference. First operand has 383 places, 423 transitions, 5646 flow. Second operand 11 states and 144 transitions. [2024-06-04 14:35:49,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 444 transitions, 6816 flow [2024-06-04 14:35:50,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 444 transitions, 6658 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:50,334 INFO L231 Difference]: Finished difference. Result has 385 places, 423 transitions, 5662 flow [2024-06-04 14:35:50,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5488, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5662, PETRI_PLACES=385, PETRI_TRANSITIONS=423} [2024-06-04 14:35:50,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-04 14:35:50,334 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 423 transitions, 5662 flow [2024-06-04 14:35:50,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:50,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:50,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:50,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:35:50,335 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)] === [2024-06-04 14:35:50,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash -253967346, now seen corresponding path program 12 times [2024-06-04 14:35:50,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:50,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626721471] [2024-06-04 14:35:50,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:50,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:51,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626721471] [2024-06-04 14:35:51,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626721471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:51,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:51,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:51,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45012292] [2024-06-04 14:35:51,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:51,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:51,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:51,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:51,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:51,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:51,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 423 transitions, 5662 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:51,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:51,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:51,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:52,449 INFO L124 PetriNetUnfolderBase]: 1101/1919 cut-off events. [2024-06-04 14:35:52,450 INFO L125 PetriNetUnfolderBase]: For 265893/265893 co-relation queries the response was YES. [2024-06-04 14:35:52,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16570 conditions, 1919 events. 1101/1919 cut-off events. For 265893/265893 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10881 event pairs, 161 based on Foata normal form. 2/1920 useless extension candidates. Maximal degree in co-relation 16402. Up to 1704 conditions per place. [2024-06-04 14:35:52,476 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 382 selfloop transitions, 60 changer transitions 0/444 dead transitions. [2024-06-04 14:35:52,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 444 transitions, 6870 flow [2024-06-04 14:35:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 14:35:52,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 14:35:52,477 INFO L175 Difference]: Start difference. First operand has 385 places, 423 transitions, 5662 flow. Second operand 10 states and 125 transitions. [2024-06-04 14:35:52,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 444 transitions, 6870 flow [2024-06-04 14:35:53,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 444 transitions, 6676 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:35:53,447 INFO L231 Difference]: Finished difference. Result has 385 places, 425 transitions, 5645 flow [2024-06-04 14:35:53,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5472, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5645, PETRI_PLACES=385, PETRI_TRANSITIONS=425} [2024-06-04 14:35:53,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-04 14:35:53,448 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 425 transitions, 5645 flow [2024-06-04 14:35:53,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:53,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:53,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:53,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:35:53,449 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)] === [2024-06-04 14:35:53,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2114677007, now seen corresponding path program 12 times [2024-06-04 14:35:53,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141489106] [2024-06-04 14:35:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:54,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:54,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141489106] [2024-06-04 14:35:54,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141489106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:54,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:54,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:54,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881416834] [2024-06-04 14:35:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:54,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:54,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:54,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:55,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:55,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 425 transitions, 5645 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:55,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:55,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:55,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:55,730 INFO L124 PetriNetUnfolderBase]: 1105/1927 cut-off events. [2024-06-04 14:35:55,730 INFO L125 PetriNetUnfolderBase]: For 270153/270153 co-relation queries the response was YES. [2024-06-04 14:35:55,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16593 conditions, 1927 events. 1105/1927 cut-off events. For 270153/270153 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10993 event pairs, 166 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 16424. Up to 1754 conditions per place. [2024-06-04 14:35:55,757 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 377 selfloop transitions, 64 changer transitions 0/443 dead transitions. [2024-06-04 14:35:55,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 443 transitions, 6595 flow [2024-06-04 14:35:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:35:55,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 14:35:55,758 INFO L175 Difference]: Start difference. First operand has 385 places, 425 transitions, 5645 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:35:55,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 443 transitions, 6595 flow [2024-06-04 14:35:56,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 443 transitions, 6394 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 14:35:56,751 INFO L231 Difference]: Finished difference. Result has 386 places, 426 transitions, 5594 flow [2024-06-04 14:35:56,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5444, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5594, PETRI_PLACES=386, PETRI_TRANSITIONS=426} [2024-06-04 14:35:56,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-04 14:35:56,752 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 426 transitions, 5594 flow [2024-06-04 14:35:56,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:56,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:56,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:56,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:35:56,752 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)] === [2024-06-04 14:35:56,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1920737597, now seen corresponding path program 13 times [2024-06-04 14:35:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:56,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939961930] [2024-06-04 14:35:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:57,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:57,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939961930] [2024-06-04 14:35:57,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939961930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:57,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:57,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985906440] [2024-06-04 14:35:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:57,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:57,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:35:57,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 426 transitions, 5594 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:57,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:57,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:35:57,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:58,283 INFO L124 PetriNetUnfolderBase]: 1086/1894 cut-off events. [2024-06-04 14:35:58,284 INFO L125 PetriNetUnfolderBase]: For 258335/258335 co-relation queries the response was YES. [2024-06-04 14:35:58,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14880 conditions, 1894 events. 1086/1894 cut-off events. For 258335/258335 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10809 event pairs, 158 based on Foata normal form. 14/1907 useless extension candidates. Maximal degree in co-relation 14711. Up to 1690 conditions per place. [2024-06-04 14:35:58,308 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 392 selfloop transitions, 41 changer transitions 14/449 dead transitions. [2024-06-04 14:35:58,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 449 transitions, 6620 flow [2024-06-04 14:35:58,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 14:35:58,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 14:35:58,309 INFO L175 Difference]: Start difference. First operand has 386 places, 426 transitions, 5594 flow. Second operand 10 states and 127 transitions. [2024-06-04 14:35:58,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 449 transitions, 6620 flow [2024-06-04 14:35:59,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 449 transitions, 6476 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:59,167 INFO L231 Difference]: Finished difference. Result has 387 places, 419 transitions, 5408 flow [2024-06-04 14:35:59,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5450, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5408, PETRI_PLACES=387, PETRI_TRANSITIONS=419} [2024-06-04 14:35:59,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-04 14:35:59,168 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 419 transitions, 5408 flow [2024-06-04 14:35:59,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:59,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:59,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:59,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:35:59,169 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)] === [2024-06-04 14:35:59,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1920731862, now seen corresponding path program 13 times [2024-06-04 14:35:59,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:59,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011730275] [2024-06-04 14:35:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:00,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:00,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011730275] [2024-06-04 14:36:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011730275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:00,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737303549] [2024-06-04 14:36:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:00,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:00,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:00,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:00,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:00,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 419 transitions, 5408 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:00,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:00,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:00,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:01,559 INFO L124 PetriNetUnfolderBase]: 1031/1799 cut-off events. [2024-06-04 14:36:01,559 INFO L125 PetriNetUnfolderBase]: For 181674/181674 co-relation queries the response was YES. [2024-06-04 14:36:01,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13983 conditions, 1799 events. 1031/1799 cut-off events. For 181674/181674 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10205 event pairs, 145 based on Foata normal form. 2/1800 useless extension candidates. Maximal degree in co-relation 13813. Up to 1620 conditions per place. [2024-06-04 14:36:01,583 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 382 selfloop transitions, 54 changer transitions 0/438 dead transitions. [2024-06-04 14:36:01,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 438 transitions, 6348 flow [2024-06-04 14:36:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:36:01,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:36:01,590 INFO L175 Difference]: Start difference. First operand has 387 places, 419 transitions, 5408 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:36:01,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 438 transitions, 6348 flow [2024-06-04 14:36:02,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 438 transitions, 6226 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:02,328 INFO L231 Difference]: Finished difference. Result has 389 places, 419 transitions, 5400 flow [2024-06-04 14:36:02,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5286, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5400, PETRI_PLACES=389, PETRI_TRANSITIONS=419} [2024-06-04 14:36:02,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-04 14:36:02,329 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 419 transitions, 5400 flow [2024-06-04 14:36:02,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:02,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:02,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:02,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:36:02,329 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)] === [2024-06-04 14:36:02,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1746771114, now seen corresponding path program 14 times [2024-06-04 14:36:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:02,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968937932] [2024-06-04 14:36:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:03,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:03,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968937932] [2024-06-04 14:36:03,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968937932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:03,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:03,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:03,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750671960] [2024-06-04 14:36:03,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:03,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:03,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:04,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:04,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 419 transitions, 5400 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:04,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:04,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:04,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:04,756 INFO L124 PetriNetUnfolderBase]: 1027/1793 cut-off events. [2024-06-04 14:36:04,756 INFO L125 PetriNetUnfolderBase]: For 172896/172896 co-relation queries the response was YES. [2024-06-04 14:36:04,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13741 conditions, 1793 events. 1027/1793 cut-off events. For 172896/172896 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10188 event pairs, 184 based on Foata normal form. 2/1794 useless extension candidates. Maximal degree in co-relation 13570. Up to 1510 conditions per place. [2024-06-04 14:36:04,779 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 369 selfloop transitions, 66 changer transitions 0/437 dead transitions. [2024-06-04 14:36:04,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 437 transitions, 6550 flow [2024-06-04 14:36:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:36:04,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 14:36:04,781 INFO L175 Difference]: Start difference. First operand has 389 places, 419 transitions, 5400 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:36:04,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 437 transitions, 6550 flow [2024-06-04 14:36:05,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 437 transitions, 6398 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 14:36:05,492 INFO L231 Difference]: Finished difference. Result has 390 places, 419 transitions, 5385 flow [2024-06-04 14:36:05,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5385, PETRI_PLACES=390, PETRI_TRANSITIONS=419} [2024-06-04 14:36:05,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-04 14:36:05,493 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 419 transitions, 5385 flow [2024-06-04 14:36:05,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:05,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:05,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:05,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:36:05,494 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)] === [2024-06-04 14:36:05,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1705953362, now seen corresponding path program 6 times [2024-06-04 14:36:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:05,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873151490] [2024-06-04 14:36:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:06,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:06,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873151490] [2024-06-04 14:36:06,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873151490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:06,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:06,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:06,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312039653] [2024-06-04 14:36:06,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:06,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:06,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:06,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:06,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:06,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:06,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 419 transitions, 5385 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:06,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:06,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:06,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:07,266 INFO L124 PetriNetUnfolderBase]: 1031/1801 cut-off events. [2024-06-04 14:36:07,266 INFO L125 PetriNetUnfolderBase]: For 176544/176544 co-relation queries the response was YES. [2024-06-04 14:36:07,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13831 conditions, 1801 events. 1031/1801 cut-off events. For 176544/176544 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10246 event pairs, 199 based on Foata normal form. 2/1802 useless extension candidates. Maximal degree in co-relation 13659. Up to 1754 conditions per place. [2024-06-04 14:36:07,289 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 415 selfloop transitions, 15 changer transitions 0/432 dead transitions. [2024-06-04 14:36:07,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 432 transitions, 6295 flow [2024-06-04 14:36:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 14:36:07,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 14:36:07,290 INFO L175 Difference]: Start difference. First operand has 390 places, 419 transitions, 5385 flow. Second operand 10 states and 106 transitions. [2024-06-04 14:36:07,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 432 transitions, 6295 flow [2024-06-04 14:36:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 432 transitions, 6187 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:07,950 INFO L231 Difference]: Finished difference. Result has 391 places, 420 transitions, 5337 flow [2024-06-04 14:36:07,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5277, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5337, PETRI_PLACES=391, PETRI_TRANSITIONS=420} [2024-06-04 14:36:07,951 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-04 14:36:07,951 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 420 transitions, 5337 flow [2024-06-04 14:36:07,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:07,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:07,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:07,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:36:07,951 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)] === [2024-06-04 14:36:07,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2008692826, now seen corresponding path program 7 times [2024-06-04 14:36:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:07,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963971642] [2024-06-04 14:36:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:07,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963971642] [2024-06-04 14:36:09,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963971642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:09,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894757296] [2024-06-04 14:36:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:09,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:09,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:09,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:09,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 420 transitions, 5337 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:09,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:09,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:09,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:10,495 INFO L124 PetriNetUnfolderBase]: 1035/1809 cut-off events. [2024-06-04 14:36:10,495 INFO L125 PetriNetUnfolderBase]: For 179814/179814 co-relation queries the response was YES. [2024-06-04 14:36:10,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13801 conditions, 1809 events. 1035/1809 cut-off events. For 179814/179814 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10329 event pairs, 193 based on Foata normal form. 2/1810 useless extension candidates. Maximal degree in co-relation 13628. Up to 1740 conditions per place. [2024-06-04 14:36:10,517 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 409 selfloop transitions, 24 changer transitions 0/435 dead transitions. [2024-06-04 14:36:10,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 435 transitions, 6273 flow [2024-06-04 14:36:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:36:10,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 14:36:10,519 INFO L175 Difference]: Start difference. First operand has 391 places, 420 transitions, 5337 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:36:10,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 435 transitions, 6273 flow [2024-06-04 14:36:11,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 435 transitions, 6223 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:11,241 INFO L231 Difference]: Finished difference. Result has 393 places, 421 transitions, 5367 flow [2024-06-04 14:36:11,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5287, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5367, PETRI_PLACES=393, PETRI_TRANSITIONS=421} [2024-06-04 14:36:11,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-04 14:36:11,242 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 421 transitions, 5367 flow [2024-06-04 14:36:11,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:11,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:11,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:11,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:36:11,242 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)] === [2024-06-04 14:36:11,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:11,243 INFO L85 PathProgramCache]: Analyzing trace with hash 125321317, now seen corresponding path program 14 times [2024-06-04 14:36:11,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:11,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074612239] [2024-06-04 14:36:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:11,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:12,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:12,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074612239] [2024-06-04 14:36:12,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074612239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:12,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:12,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:12,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746404777] [2024-06-04 14:36:12,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:12,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:12,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:12,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:12,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:12,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 421 transitions, 5367 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:12,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:12,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:12,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:13,375 INFO L124 PetriNetUnfolderBase]: 1039/1817 cut-off events. [2024-06-04 14:36:13,375 INFO L125 PetriNetUnfolderBase]: For 182912/182912 co-relation queries the response was YES. [2024-06-04 14:36:13,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13874 conditions, 1817 events. 1039/1817 cut-off events. For 182912/182912 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 10396 event pairs, 195 based on Foata normal form. 2/1818 useless extension candidates. Maximal degree in co-relation 13700. Up to 1667 conditions per place. [2024-06-04 14:36:13,399 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 386 selfloop transitions, 48 changer transitions 0/436 dead transitions. [2024-06-04 14:36:13,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 436 transitions, 6295 flow [2024-06-04 14:36:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 14:36:13,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 14:36:13,400 INFO L175 Difference]: Start difference. First operand has 393 places, 421 transitions, 5367 flow. Second operand 10 states and 118 transitions. [2024-06-04 14:36:13,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 436 transitions, 6295 flow [2024-06-04 14:36:14,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 436 transitions, 6215 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:14,174 INFO L231 Difference]: Finished difference. Result has 395 places, 422 transitions, 5407 flow [2024-06-04 14:36:14,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5287, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5407, PETRI_PLACES=395, PETRI_TRANSITIONS=422} [2024-06-04 14:36:14,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-04 14:36:14,174 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 422 transitions, 5407 flow [2024-06-04 14:36:14,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:14,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:14,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:14,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:36:14,175 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)] === [2024-06-04 14:36:14,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1128402484, now seen corresponding path program 8 times [2024-06-04 14:36:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778893789] [2024-06-04 14:36:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:15,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778893789] [2024-06-04 14:36:15,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778893789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:15,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:15,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:15,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166662857] [2024-06-04 14:36:15,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:15,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:15,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:15,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:15,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:15,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:15,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 422 transitions, 5407 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:15,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:15,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:15,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:16,158 INFO L124 PetriNetUnfolderBase]: 1043/1825 cut-off events. [2024-06-04 14:36:16,158 INFO L125 PetriNetUnfolderBase]: For 186352/186352 co-relation queries the response was YES. [2024-06-04 14:36:16,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13983 conditions, 1825 events. 1043/1825 cut-off events. For 186352/186352 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10463 event pairs, 199 based on Foata normal form. 2/1826 useless extension candidates. Maximal degree in co-relation 13808. Up to 1772 conditions per place. [2024-06-04 14:36:16,184 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 412 selfloop transitions, 21 changer transitions 0/435 dead transitions. [2024-06-04 14:36:16,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 435 transitions, 6335 flow [2024-06-04 14:36:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:36:16,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 14:36:16,185 INFO L175 Difference]: Start difference. First operand has 395 places, 422 transitions, 5407 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:36:16,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 435 transitions, 6335 flow [2024-06-04 14:36:17,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 435 transitions, 6225 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:17,149 INFO L231 Difference]: Finished difference. Result has 397 places, 423 transitions, 5374 flow [2024-06-04 14:36:17,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5297, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5374, PETRI_PLACES=397, PETRI_TRANSITIONS=423} [2024-06-04 14:36:17,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-04 14:36:17,149 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 423 transitions, 5374 flow [2024-06-04 14:36:17,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:17,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:17,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:17,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:36:17,150 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)] === [2024-06-04 14:36:17,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2008477345, now seen corresponding path program 15 times [2024-06-04 14:36:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:17,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458209415] [2024-06-04 14:36:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:17,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:18,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:18,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458209415] [2024-06-04 14:36:18,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458209415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:18,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:18,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:18,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727067399] [2024-06-04 14:36:18,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:18,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:18,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:18,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:18,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:18,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:18,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 423 transitions, 5374 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:18,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:18,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:18,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:19,215 INFO L124 PetriNetUnfolderBase]: 1063/1869 cut-off events. [2024-06-04 14:36:19,216 INFO L125 PetriNetUnfolderBase]: For 253096/253096 co-relation queries the response was YES. [2024-06-04 14:36:19,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14128 conditions, 1869 events. 1063/1869 cut-off events. For 253096/253096 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10753 event pairs, 207 based on Foata normal form. 12/1880 useless extension candidates. Maximal degree in co-relation 13952. Up to 1754 conditions per place. [2024-06-04 14:36:19,240 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 411 selfloop transitions, 23 changer transitions 7/443 dead transitions. [2024-06-04 14:36:19,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 443 transitions, 6372 flow [2024-06-04 14:36:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:36:19,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 14:36:19,241 INFO L175 Difference]: Start difference. First operand has 397 places, 423 transitions, 5374 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:36:19,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 443 transitions, 6372 flow [2024-06-04 14:36:19,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 443 transitions, 6307 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:19,995 INFO L231 Difference]: Finished difference. Result has 400 places, 422 transitions, 5350 flow [2024-06-04 14:36:19,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5350, PETRI_PLACES=400, PETRI_TRANSITIONS=422} [2024-06-04 14:36:19,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-04 14:36:19,995 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 422 transitions, 5350 flow [2024-06-04 14:36:19,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:19,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:19,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:19,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:36:19,996 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)] === [2024-06-04 14:36:19,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1137330484, now seen corresponding path program 9 times [2024-06-04 14:36:19,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:19,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976973672] [2024-06-04 14:36:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:19,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:21,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976973672] [2024-06-04 14:36:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976973672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:21,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:21,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:21,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234310379] [2024-06-04 14:36:21,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:21,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:21,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:21,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:21,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:21,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:21,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 422 transitions, 5350 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:21,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:21,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:21,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:22,027 INFO L124 PetriNetUnfolderBase]: 1059/1865 cut-off events. [2024-06-04 14:36:22,027 INFO L125 PetriNetUnfolderBase]: For 192698/192698 co-relation queries the response was YES. [2024-06-04 14:36:22,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14117 conditions, 1865 events. 1059/1865 cut-off events. For 192698/192698 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10762 event pairs, 211 based on Foata normal form. 2/1866 useless extension candidates. Maximal degree in co-relation 13940. Up to 1815 conditions per place. [2024-06-04 14:36:22,056 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 415 selfloop transitions, 18 changer transitions 0/435 dead transitions. [2024-06-04 14:36:22,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 435 transitions, 6276 flow [2024-06-04 14:36:22,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 14:36:22,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 14:36:22,057 INFO L175 Difference]: Start difference. First operand has 400 places, 422 transitions, 5350 flow. Second operand 10 states and 108 transitions. [2024-06-04 14:36:22,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 435 transitions, 6276 flow [2024-06-04 14:36:22,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 435 transitions, 6216 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:22,863 INFO L231 Difference]: Finished difference. Result has 401 places, 423 transitions, 5362 flow [2024-06-04 14:36:22,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5290, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5362, PETRI_PLACES=401, PETRI_TRANSITIONS=423} [2024-06-04 14:36:22,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-04 14:36:22,863 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 423 transitions, 5362 flow [2024-06-04 14:36:22,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:22,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:22,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:36:22,864 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)] === [2024-06-04 14:36:22,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2008684890, now seen corresponding path program 15 times [2024-06-04 14:36:22,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:22,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070294344] [2024-06-04 14:36:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:22,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:24,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:24,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070294344] [2024-06-04 14:36:24,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070294344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:24,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:24,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803317631] [2024-06-04 14:36:24,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:24,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:24,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:24,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:24,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:24,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:24,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 423 transitions, 5362 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:24,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:24,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:24,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:25,548 INFO L124 PetriNetUnfolderBase]: 1065/1875 cut-off events. [2024-06-04 14:36:25,549 INFO L125 PetriNetUnfolderBase]: For 196142/196142 co-relation queries the response was YES. [2024-06-04 14:36:25,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14182 conditions, 1875 events. 1065/1875 cut-off events. For 196142/196142 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10850 event pairs, 209 based on Foata normal form. 2/1876 useless extension candidates. Maximal degree in co-relation 14004. Up to 1793 conditions per place. [2024-06-04 14:36:25,575 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 411 selfloop transitions, 27 changer transitions 0/440 dead transitions. [2024-06-04 14:36:25,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 440 transitions, 6330 flow [2024-06-04 14:36:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:25,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:36:25,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 14:36:25,577 INFO L175 Difference]: Start difference. First operand has 401 places, 423 transitions, 5362 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:36:25,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 440 transitions, 6330 flow [2024-06-04 14:36:26,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 440 transitions, 6268 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:26,518 INFO L231 Difference]: Finished difference. Result has 404 places, 425 transitions, 5405 flow [2024-06-04 14:36:26,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5300, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5405, PETRI_PLACES=404, PETRI_TRANSITIONS=425} [2024-06-04 14:36:26,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-04 14:36:26,518 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 425 transitions, 5405 flow [2024-06-04 14:36:26,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:26,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:26,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:26,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:36:26,519 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)] === [2024-06-04 14:36:26,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash 125173447, now seen corresponding path program 16 times [2024-06-04 14:36:26,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:26,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808593780] [2024-06-04 14:36:26,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:26,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:27,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:27,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808593780] [2024-06-04 14:36:27,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808593780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:27,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:27,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:27,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300194519] [2024-06-04 14:36:27,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:27,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:27,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:27,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:27,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:27,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 425 transitions, 5405 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:27,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:27,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:27,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:28,562 INFO L124 PetriNetUnfolderBase]: 1105/1955 cut-off events. [2024-06-04 14:36:28,562 INFO L125 PetriNetUnfolderBase]: For 280708/280708 co-relation queries the response was YES. [2024-06-04 14:36:28,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15988 conditions, 1955 events. 1105/1955 cut-off events. For 280708/280708 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11343 event pairs, 217 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 15809. Up to 1658 conditions per place. [2024-06-04 14:36:28,590 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 391 selfloop transitions, 55 changer transitions 0/448 dead transitions. [2024-06-04 14:36:28,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 448 transitions, 6673 flow [2024-06-04 14:36:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:36:28,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:36:28,591 INFO L175 Difference]: Start difference. First operand has 404 places, 425 transitions, 5405 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:36:28,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 448 transitions, 6673 flow [2024-06-04 14:36:29,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 448 transitions, 6594 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:29,620 INFO L231 Difference]: Finished difference. Result has 406 places, 426 transitions, 5462 flow [2024-06-04 14:36:29,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5326, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5462, PETRI_PLACES=406, PETRI_TRANSITIONS=426} [2024-06-04 14:36:29,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-04 14:36:29,621 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 426 transitions, 5462 flow [2024-06-04 14:36:29,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:29,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:29,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:29,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:36:29,623 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)] === [2024-06-04 14:36:29,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:29,623 INFO L85 PathProgramCache]: Analyzing trace with hash 130899178, now seen corresponding path program 10 times [2024-06-04 14:36:29,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:29,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226604353] [2024-06-04 14:36:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:29,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:31,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:31,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226604353] [2024-06-04 14:36:31,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226604353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:31,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:31,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947823751] [2024-06-04 14:36:31,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:31,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:31,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:31,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:31,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 426 transitions, 5462 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:31,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:31,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:31,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:32,381 INFO L124 PetriNetUnfolderBase]: 1109/1963 cut-off events. [2024-06-04 14:36:32,381 INFO L125 PetriNetUnfolderBase]: For 285390/285390 co-relation queries the response was YES. [2024-06-04 14:36:32,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16157 conditions, 1963 events. 1109/1963 cut-off events. For 285390/285390 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11423 event pairs, 223 based on Foata normal form. 2/1964 useless extension candidates. Maximal degree in co-relation 15977. Up to 1852 conditions per place. [2024-06-04 14:36:32,407 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 402 selfloop transitions, 37 changer transitions 0/441 dead transitions. [2024-06-04 14:36:32,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 441 transitions, 6416 flow [2024-06-04 14:36:32,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:36:32,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:36:32,408 INFO L175 Difference]: Start difference. First operand has 406 places, 426 transitions, 5462 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:36:32,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 441 transitions, 6416 flow [2024-06-04 14:36:33,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 441 transitions, 6151 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-04 14:36:33,464 INFO L231 Difference]: Finished difference. Result has 406 places, 427 transitions, 5309 flow [2024-06-04 14:36:33,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5197, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5309, PETRI_PLACES=406, PETRI_TRANSITIONS=427} [2024-06-04 14:36:33,464 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-04 14:36:33,464 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 427 transitions, 5309 flow [2024-06-04 14:36:33,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:33,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:33,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:33,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:36:33,465 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)] === [2024-06-04 14:36:33,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:33,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2008483080, now seen corresponding path program 16 times [2024-06-04 14:36:33,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:33,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121102227] [2024-06-04 14:36:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:33,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:34,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:34,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121102227] [2024-06-04 14:36:34,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121102227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:34,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:34,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704993562] [2024-06-04 14:36:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:34,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:34,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:34,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:34,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 427 transitions, 5309 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:34,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:34,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:34,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:35,606 INFO L124 PetriNetUnfolderBase]: 1105/1957 cut-off events. [2024-06-04 14:36:35,606 INFO L125 PetriNetUnfolderBase]: For 275564/275564 co-relation queries the response was YES. [2024-06-04 14:36:35,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15501 conditions, 1957 events. 1105/1957 cut-off events. For 275564/275564 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11395 event pairs, 228 based on Foata normal form. 2/1958 useless extension candidates. Maximal degree in co-relation 15323. Up to 1850 conditions per place. [2024-06-04 14:36:35,633 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 411 selfloop transitions, 31 changer transitions 0/444 dead transitions. [2024-06-04 14:36:35,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 444 transitions, 6253 flow [2024-06-04 14:36:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:36:35,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 14:36:35,634 INFO L175 Difference]: Start difference. First operand has 406 places, 427 transitions, 5309 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:36:35,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 444 transitions, 6253 flow [2024-06-04 14:36:36,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 444 transitions, 6096 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:36,648 INFO L231 Difference]: Finished difference. Result has 408 places, 427 transitions, 5219 flow [2024-06-04 14:36:36,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5152, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5219, PETRI_PLACES=408, PETRI_TRANSITIONS=427} [2024-06-04 14:36:36,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-04 14:36:36,649 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 427 transitions, 5219 flow [2024-06-04 14:36:36,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:36,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:36,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:36,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:36:36,649 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)] === [2024-06-04 14:36:36,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2016102136, now seen corresponding path program 11 times [2024-06-04 14:36:36,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:36,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506878607] [2024-06-04 14:36:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:37,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:37,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506878607] [2024-06-04 14:36:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506878607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:37,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:37,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984175727] [2024-06-04 14:36:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:37,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:37,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:37,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:38,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:38,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 427 transitions, 5219 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:38,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:38,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:38,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:38,677 INFO L124 PetriNetUnfolderBase]: 1109/1965 cut-off events. [2024-06-04 14:36:38,677 INFO L125 PetriNetUnfolderBase]: For 280544/280544 co-relation queries the response was YES. [2024-06-04 14:36:38,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15436 conditions, 1965 events. 1109/1965 cut-off events. For 280544/280544 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11457 event pairs, 230 based on Foata normal form. 2/1966 useless extension candidates. Maximal degree in co-relation 15258. Up to 1911 conditions per place. [2024-06-04 14:36:38,704 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 420 selfloop transitions, 20 changer transitions 0/442 dead transitions. [2024-06-04 14:36:38,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 442 transitions, 6193 flow [2024-06-04 14:36:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:36:38,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:36:38,705 INFO L175 Difference]: Start difference. First operand has 408 places, 427 transitions, 5219 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:36:38,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 442 transitions, 6193 flow [2024-06-04 14:36:39,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 442 transitions, 6108 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:36:39,834 INFO L231 Difference]: Finished difference. Result has 409 places, 429 transitions, 5243 flow [2024-06-04 14:36:39,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5243, PETRI_PLACES=409, PETRI_TRANSITIONS=429} [2024-06-04 14:36:39,835 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-04 14:36:39,835 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 429 transitions, 5243 flow [2024-06-04 14:36:39,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:39,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:39,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:39,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:36:39,836 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)] === [2024-06-04 14:36:39,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash 130689432, now seen corresponding path program 17 times [2024-06-04 14:36:39,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:39,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186272856] [2024-06-04 14:36:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:39,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:41,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186272856] [2024-06-04 14:36:41,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186272856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:41,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:41,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:41,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281294334] [2024-06-04 14:36:41,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:41,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:41,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:41,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:41,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:41,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:41,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 429 transitions, 5243 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:41,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:41,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:41,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:42,017 INFO L124 PetriNetUnfolderBase]: 1115/1975 cut-off events. [2024-06-04 14:36:42,018 INFO L125 PetriNetUnfolderBase]: For 284777/284777 co-relation queries the response was YES. [2024-06-04 14:36:42,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15518 conditions, 1975 events. 1115/1975 cut-off events. For 284777/284777 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11529 event pairs, 226 based on Foata normal form. 2/1976 useless extension candidates. Maximal degree in co-relation 15338. Up to 1794 conditions per place. [2024-06-04 14:36:42,048 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 393 selfloop transitions, 53 changer transitions 0/448 dead transitions. [2024-06-04 14:36:42,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 448 transitions, 6243 flow [2024-06-04 14:36:42,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:36:42,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 14:36:42,050 INFO L175 Difference]: Start difference. First operand has 409 places, 429 transitions, 5243 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:36:42,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 448 transitions, 6243 flow [2024-06-04 14:36:43,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 448 transitions, 6180 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-04 14:36:43,212 INFO L231 Difference]: Finished difference. Result has 414 places, 431 transitions, 5341 flow [2024-06-04 14:36:43,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5180, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5341, PETRI_PLACES=414, PETRI_TRANSITIONS=431} [2024-06-04 14:36:43,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-04 14:36:43,213 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 431 transitions, 5341 flow [2024-06-04 14:36:43,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:43,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:43,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:43,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:36:43,214 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)] === [2024-06-04 14:36:43,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:43,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2016111436, now seen corresponding path program 12 times [2024-06-04 14:36:43,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:43,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217250079] [2024-06-04 14:36:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:43,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:44,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:44,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217250079] [2024-06-04 14:36:44,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217250079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:44,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:44,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846732333] [2024-06-04 14:36:44,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:44,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:44,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:44,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:44,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:44,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 431 transitions, 5341 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:44,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:44,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:44,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:45,499 INFO L124 PetriNetUnfolderBase]: 1119/1983 cut-off events. [2024-06-04 14:36:45,499 INFO L125 PetriNetUnfolderBase]: For 289798/289798 co-relation queries the response was YES. [2024-06-04 14:36:45,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15686 conditions, 1983 events. 1119/1983 cut-off events. For 289798/289798 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11600 event pairs, 236 based on Foata normal form. 2/1984 useless extension candidates. Maximal degree in co-relation 15505. Up to 1932 conditions per place. [2024-06-04 14:36:45,532 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 425 selfloop transitions, 18 changer transitions 0/445 dead transitions. [2024-06-04 14:36:45,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 445 transitions, 6299 flow [2024-06-04 14:36:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:36:45,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:36:45,537 INFO L175 Difference]: Start difference. First operand has 414 places, 431 transitions, 5341 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:36:45,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 445 transitions, 6299 flow [2024-06-04 14:36:46,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 445 transitions, 6160 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:46,837 INFO L231 Difference]: Finished difference. Result has 415 places, 432 transitions, 5280 flow [2024-06-04 14:36:46,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5280, PETRI_PLACES=415, PETRI_TRANSITIONS=432} [2024-06-04 14:36:46,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 384 predicate places. [2024-06-04 14:36:46,838 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 432 transitions, 5280 flow [2024-06-04 14:36:46,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:46,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:46,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:46,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:36:46,839 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)] === [2024-06-04 14:36:46,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1629587368, now seen corresponding path program 13 times [2024-06-04 14:36:46,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:46,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614049726] [2024-06-04 14:36:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:46,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:48,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:48,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614049726] [2024-06-04 14:36:48,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614049726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:48,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:48,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:48,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143962652] [2024-06-04 14:36:48,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:48,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:48,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:48,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:48,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:48,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:48,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 432 transitions, 5280 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:48,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:48,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:48,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:49,026 INFO L124 PetriNetUnfolderBase]: 1123/1991 cut-off events. [2024-06-04 14:36:49,026 INFO L125 PetriNetUnfolderBase]: For 295060/295060 co-relation queries the response was YES. [2024-06-04 14:36:49,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15681 conditions, 1991 events. 1123/1991 cut-off events. For 295060/295060 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11678 event pairs, 232 based on Foata normal form. 2/1992 useless extension candidates. Maximal degree in co-relation 15499. Up to 1925 conditions per place. [2024-06-04 14:36:49,120 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 421 selfloop transitions, 24 changer transitions 0/447 dead transitions. [2024-06-04 14:36:49,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 447 transitions, 6265 flow [2024-06-04 14:36:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:36:49,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-04 14:36:49,121 INFO L175 Difference]: Start difference. First operand has 415 places, 432 transitions, 5280 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:36:49,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 447 transitions, 6265 flow [2024-06-04 14:36:50,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 447 transitions, 6157 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:50,049 INFO L231 Difference]: Finished difference. Result has 417 places, 434 transitions, 5290 flow [2024-06-04 14:36:50,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5173, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5290, PETRI_PLACES=417, PETRI_TRANSITIONS=434} [2024-06-04 14:36:50,050 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-04 14:36:50,050 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 434 transitions, 5290 flow [2024-06-04 14:36:50,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:50,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:50,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:50,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:36:50,050 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)] === [2024-06-04 14:36:50,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:50,051 INFO L85 PathProgramCache]: Analyzing trace with hash -194912372, now seen corresponding path program 18 times [2024-06-04 14:36:50,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393674450] [2024-06-04 14:36:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:51,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:51,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393674450] [2024-06-04 14:36:51,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393674450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:51,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:51,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:51,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557978605] [2024-06-04 14:36:51,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:51,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:51,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:51,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:51,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:51,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:51,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 434 transitions, 5290 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:51,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:51,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:51,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:52,376 INFO L124 PetriNetUnfolderBase]: 1129/2001 cut-off events. [2024-06-04 14:36:52,376 INFO L125 PetriNetUnfolderBase]: For 298823/298823 co-relation queries the response was YES. [2024-06-04 14:36:52,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15749 conditions, 2001 events. 1129/2001 cut-off events. For 298823/298823 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 11689 event pairs, 223 based on Foata normal form. 2/2002 useless extension candidates. Maximal degree in co-relation 15565. Up to 1663 conditions per place. [2024-06-04 14:36:52,404 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 371 selfloop transitions, 82 changer transitions 0/455 dead transitions. [2024-06-04 14:36:52,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 455 transitions, 6806 flow [2024-06-04 14:36:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:36:52,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:36:52,405 INFO L175 Difference]: Start difference. First operand has 417 places, 434 transitions, 5290 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:36:52,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 455 transitions, 6806 flow [2024-06-04 14:36:53,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 455 transitions, 6729 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 14:36:53,320 INFO L231 Difference]: Finished difference. Result has 421 places, 436 transitions, 5430 flow [2024-06-04 14:36:53,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5213, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5430, PETRI_PLACES=421, PETRI_TRANSITIONS=436} [2024-06-04 14:36:53,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-04 14:36:53,326 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 436 transitions, 5430 flow [2024-06-04 14:36:53,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:53,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:53,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:53,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:36:53,327 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)] === [2024-06-04 14:36:53,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:53,327 INFO L85 PathProgramCache]: Analyzing trace with hash -757636, now seen corresponding path program 14 times [2024-06-04 14:36:53,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:53,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690239558] [2024-06-04 14:36:53,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:53,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:54,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:54,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690239558] [2024-06-04 14:36:54,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690239558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:54,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:54,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106710858] [2024-06-04 14:36:54,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:54,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:54,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:54,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:54,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:54,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:54,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 436 transitions, 5430 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:54,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:54,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:54,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:55,521 INFO L124 PetriNetUnfolderBase]: 1133/2009 cut-off events. [2024-06-04 14:36:55,521 INFO L125 PetriNetUnfolderBase]: For 304078/304078 co-relation queries the response was YES. [2024-06-04 14:36:55,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15972 conditions, 2009 events. 1133/2009 cut-off events. For 304078/304078 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11759 event pairs, 236 based on Foata normal form. 2/2010 useless extension candidates. Maximal degree in co-relation 15787. Up to 1936 conditions per place. [2024-06-04 14:36:55,551 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 422 selfloop transitions, 27 changer transitions 0/451 dead transitions. [2024-06-04 14:36:55,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 451 transitions, 6412 flow [2024-06-04 14:36:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:36:55,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 14:36:55,552 INFO L175 Difference]: Start difference. First operand has 421 places, 436 transitions, 5430 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:36:55,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 451 transitions, 6412 flow [2024-06-04 14:36:56,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 451 transitions, 6126 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-04 14:36:56,844 INFO L231 Difference]: Finished difference. Result has 420 places, 437 transitions, 5244 flow [2024-06-04 14:36:56,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5144, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5244, PETRI_PLACES=420, PETRI_TRANSITIONS=437} [2024-06-04 14:36:56,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-04 14:36:56,845 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 437 transitions, 5244 flow [2024-06-04 14:36:56,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:56,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:56,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:56,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:36:56,845 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)] === [2024-06-04 14:36:56,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash 324830652, now seen corresponding path program 19 times [2024-06-04 14:36:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:56,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120522410] [2024-06-04 14:36:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:58,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:58,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120522410] [2024-06-04 14:36:58,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120522410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:58,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:58,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621174169] [2024-06-04 14:36:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:58,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:58,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:58,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:58,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:36:58,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 437 transitions, 5244 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:58,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:58,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:36:58,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:59,591 INFO L124 PetriNetUnfolderBase]: 1139/2019 cut-off events. [2024-06-04 14:36:59,592 INFO L125 PetriNetUnfolderBase]: For 308499/308499 co-relation queries the response was YES. [2024-06-04 14:36:59,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15739 conditions, 2019 events. 1139/2019 cut-off events. For 308499/308499 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 11856 event pairs, 234 based on Foata normal form. 2/2020 useless extension candidates. Maximal degree in co-relation 15555. Up to 1925 conditions per place. [2024-06-04 14:36:59,621 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 421 selfloop transitions, 32 changer transitions 0/455 dead transitions. [2024-06-04 14:36:59,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 455 transitions, 6242 flow [2024-06-04 14:36:59,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:59,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:36:59,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:36:59,622 INFO L175 Difference]: Start difference. First operand has 420 places, 437 transitions, 5244 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:36:59,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 455 transitions, 6242 flow [2024-06-04 14:37:00,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 455 transitions, 6152 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:37:00,854 INFO L231 Difference]: Finished difference. Result has 423 places, 439 transitions, 5263 flow [2024-06-04 14:37:00,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5154, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5263, PETRI_PLACES=423, PETRI_TRANSITIONS=439} [2024-06-04 14:37:00,855 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-04 14:37:00,855 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 439 transitions, 5263 flow [2024-06-04 14:37:00,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:00,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:00,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:00,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:37:00,855 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)] === [2024-06-04 14:37:00,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash 130683697, now seen corresponding path program 17 times [2024-06-04 14:37:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:00,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714599840] [2024-06-04 14:37:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:00,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:02,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714599840] [2024-06-04 14:37:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714599840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:02,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:02,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:02,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80037380] [2024-06-04 14:37:02,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:02,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:02,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:02,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:02,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 439 transitions, 5263 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:02,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:02,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:02,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:02,917 INFO L124 PetriNetUnfolderBase]: 1143/2027 cut-off events. [2024-06-04 14:37:02,918 INFO L125 PetriNetUnfolderBase]: For 312668/312668 co-relation queries the response was YES. [2024-06-04 14:37:02,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15773 conditions, 2027 events. 1143/2027 cut-off events. For 312668/312668 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11953 event pairs, 240 based on Foata normal form. 2/2028 useless extension candidates. Maximal degree in co-relation 15588. Up to 1911 conditions per place. [2024-06-04 14:37:02,946 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 409 selfloop transitions, 42 changer transitions 0/453 dead transitions. [2024-06-04 14:37:02,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 453 transitions, 6216 flow [2024-06-04 14:37:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:37:02,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 14:37:02,947 INFO L175 Difference]: Start difference. First operand has 423 places, 439 transitions, 5263 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:37:02,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 453 transitions, 6216 flow [2024-06-04 14:37:04,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 453 transitions, 6127 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:04,264 INFO L231 Difference]: Finished difference. Result has 425 places, 440 transitions, 5281 flow [2024-06-04 14:37:04,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5174, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5281, PETRI_PLACES=425, PETRI_TRANSITIONS=440} [2024-06-04 14:37:04,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 394 predicate places. [2024-06-04 14:37:04,265 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 440 transitions, 5281 flow [2024-06-04 14:37:04,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:04,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:04,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:04,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:37:04,265 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)] === [2024-06-04 14:37:04,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash 324623107, now seen corresponding path program 18 times [2024-06-04 14:37:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:04,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089048457] [2024-06-04 14:37:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:05,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:05,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089048457] [2024-06-04 14:37:05,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089048457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:05,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:05,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808066891] [2024-06-04 14:37:05,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:05,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:05,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:05,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 440 transitions, 5281 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:05,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:05,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:05,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:06,414 INFO L124 PetriNetUnfolderBase]: 1142/2032 cut-off events. [2024-06-04 14:37:06,414 INFO L125 PetriNetUnfolderBase]: For 348119/348119 co-relation queries the response was YES. [2024-06-04 14:37:06,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15032 conditions, 2032 events. 1142/2032 cut-off events. For 348119/348119 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11959 event pairs, 237 based on Foata normal form. 12/2043 useless extension candidates. Maximal degree in co-relation 14846. Up to 1905 conditions per place. [2024-06-04 14:37:06,440 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 423 selfloop transitions, 28 changer transitions 7/460 dead transitions. [2024-06-04 14:37:06,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 460 transitions, 6299 flow [2024-06-04 14:37:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:37:06,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 14:37:06,441 INFO L175 Difference]: Start difference. First operand has 425 places, 440 transitions, 5281 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:37:06,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 460 transitions, 6299 flow [2024-06-04 14:37:07,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 460 transitions, 6203 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:07,571 INFO L231 Difference]: Finished difference. Result has 427 places, 438 transitions, 5218 flow [2024-06-04 14:37:07,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5185, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5218, PETRI_PLACES=427, PETRI_TRANSITIONS=438} [2024-06-04 14:37:07,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 396 predicate places. [2024-06-04 14:37:07,571 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 438 transitions, 5218 flow [2024-06-04 14:37:07,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:07,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:07,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:07,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:37:07,572 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)] === [2024-06-04 14:37:07,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:07,572 INFO L85 PathProgramCache]: Analyzing trace with hash 130891242, now seen corresponding path program 20 times [2024-06-04 14:37:07,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:07,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961737815] [2024-06-04 14:37:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:07,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:08,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:08,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961737815] [2024-06-04 14:37:08,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961737815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:08,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:08,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:08,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113664019] [2024-06-04 14:37:08,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:08,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:08,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:08,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:08,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:08,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 438 transitions, 5218 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:08,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:08,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:08,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:09,771 INFO L124 PetriNetUnfolderBase]: 1130/2014 cut-off events. [2024-06-04 14:37:09,771 INFO L125 PetriNetUnfolderBase]: For 254659/254659 co-relation queries the response was YES. [2024-06-04 14:37:09,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 2014 events. 1130/2014 cut-off events. For 254659/254659 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11887 event pairs, 230 based on Foata normal form. 2/2015 useless extension candidates. Maximal degree in co-relation 14449. Up to 1725 conditions per place. [2024-06-04 14:37:09,799 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 382 selfloop transitions, 72 changer transitions 0/456 dead transitions. [2024-06-04 14:37:09,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 456 transitions, 6448 flow [2024-06-04 14:37:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:37:09,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:37:09,800 INFO L175 Difference]: Start difference. First operand has 427 places, 438 transitions, 5218 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:37:09,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 456 transitions, 6448 flow [2024-06-04 14:37:10,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 456 transitions, 6344 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-04 14:37:10,789 INFO L231 Difference]: Finished difference. Result has 428 places, 438 transitions, 5263 flow [2024-06-04 14:37:10,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5114, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5263, PETRI_PLACES=428, PETRI_TRANSITIONS=438} [2024-06-04 14:37:10,790 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-04 14:37:10,790 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 438 transitions, 5263 flow [2024-06-04 14:37:10,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:10,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:10,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:10,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:37:10,790 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)] === [2024-06-04 14:37:10,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash 332257198, now seen corresponding path program 15 times [2024-06-04 14:37:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:10,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331801926] [2024-06-04 14:37:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:10,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331801926] [2024-06-04 14:37:12,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331801926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:12,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:12,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:12,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002474941] [2024-06-04 14:37:12,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:12,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:12,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:12,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:12,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 438 transitions, 5263 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:12,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:12,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:12,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:12,810 INFO L124 PetriNetUnfolderBase]: 1105/1963 cut-off events. [2024-06-04 14:37:12,810 INFO L125 PetriNetUnfolderBase]: For 176219/176219 co-relation queries the response was YES. [2024-06-04 14:37:12,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13168 conditions, 1963 events. 1105/1963 cut-off events. For 176219/176219 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11554 event pairs, 223 based on Foata normal form. 2/1964 useless extension candidates. Maximal degree in co-relation 12980. Up to 1909 conditions per place. [2024-06-04 14:37:12,839 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 430 selfloop transitions, 19 changer transitions 0/451 dead transitions. [2024-06-04 14:37:12,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 451 transitions, 6197 flow [2024-06-04 14:37:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:37:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:37:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:37:12,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 14:37:12,840 INFO L175 Difference]: Start difference. First operand has 428 places, 438 transitions, 5263 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:37:12,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 451 transitions, 6197 flow [2024-06-04 14:37:13,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 451 transitions, 6037 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:37:13,693 INFO L231 Difference]: Finished difference. Result has 428 places, 438 transitions, 5145 flow [2024-06-04 14:37:13,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5103, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5145, PETRI_PLACES=428, PETRI_TRANSITIONS=438} [2024-06-04 14:37:13,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-04 14:37:13,707 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 438 transitions, 5145 flow [2024-06-04 14:37:13,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:13,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:13,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:13,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:37:13,708 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)] === [2024-06-04 14:37:13,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:13,708 INFO L85 PathProgramCache]: Analyzing trace with hash 324628842, now seen corresponding path program 21 times [2024-06-04 14:37:13,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:13,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640080911] [2024-06-04 14:37:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:15,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:15,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640080911] [2024-06-04 14:37:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640080911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:15,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:15,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:15,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621257532] [2024-06-04 14:37:15,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:15,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:15,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:15,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:15,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:15,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 438 transitions, 5145 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:15,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:15,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:15,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:15,975 INFO L124 PetriNetUnfolderBase]: 1101/1957 cut-off events. [2024-06-04 14:37:15,975 INFO L125 PetriNetUnfolderBase]: For 161319/161319 co-relation queries the response was YES. [2024-06-04 14:37:15,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12722 conditions, 1957 events. 1101/1957 cut-off events. For 161319/161319 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11558 event pairs, 216 based on Foata normal form. 2/1958 useless extension candidates. Maximal degree in co-relation 12533. Up to 1863 conditions per place. [2024-06-04 14:37:16,002 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 422 selfloop transitions, 32 changer transitions 0/456 dead transitions. [2024-06-04 14:37:16,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 456 transitions, 6119 flow [2024-06-04 14:37:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:37:16,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 14:37:16,003 INFO L175 Difference]: Start difference. First operand has 428 places, 438 transitions, 5145 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:37:16,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 456 transitions, 6119 flow [2024-06-04 14:37:16,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 456 transitions, 5912 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-04 14:37:16,641 INFO L231 Difference]: Finished difference. Result has 429 places, 438 transitions, 5007 flow [2024-06-04 14:37:16,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5007, PETRI_PLACES=429, PETRI_TRANSITIONS=438} [2024-06-04 14:37:16,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-04 14:37:16,642 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 438 transitions, 5007 flow [2024-06-04 14:37:16,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:16,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:16,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:16,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:37:16,642 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)] === [2024-06-04 14:37:16,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:16,643 INFO L85 PathProgramCache]: Analyzing trace with hash -870470238, now seen corresponding path program 22 times [2024-06-04 14:37:16,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:16,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682874408] [2024-06-04 14:37:16,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:16,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:17,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:17,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682874408] [2024-06-04 14:37:17,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682874408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:17,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:17,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:37:17,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359065044] [2024-06-04 14:37:17,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:17,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:37:17,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:37:17,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:37:17,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:17,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 438 transitions, 5007 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 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) [2024-06-04 14:37:17,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:17,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:17,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:18,380 INFO L124 PetriNetUnfolderBase]: 1097/1951 cut-off events. [2024-06-04 14:37:18,381 INFO L125 PetriNetUnfolderBase]: For 145196/145196 co-relation queries the response was YES. [2024-06-04 14:37:18,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 1951 events. 1097/1951 cut-off events. For 145196/145196 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11492 event pairs, 139 based on Foata normal form. 2/1952 useless extension candidates. Maximal degree in co-relation 12014. Up to 1694 conditions per place. [2024-06-04 14:37:18,410 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 383 selfloop transitions, 73 changer transitions 0/458 dead transitions. [2024-06-04 14:37:18,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 458 transitions, 5996 flow [2024-06-04 14:37:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:37:18,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:37:18,412 INFO L175 Difference]: Start difference. First operand has 429 places, 438 transitions, 5007 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:37:18,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 458 transitions, 5996 flow [2024-06-04 14:37:19,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 458 transitions, 5770 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-04 14:37:19,162 INFO L231 Difference]: Finished difference. Result has 429 places, 440 transitions, 4975 flow [2024-06-04 14:37:19,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4782, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4975, PETRI_PLACES=429, PETRI_TRANSITIONS=440} [2024-06-04 14:37:19,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-04 14:37:19,163 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 440 transitions, 4975 flow [2024-06-04 14:37:19,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 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) [2024-06-04 14:37:19,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:19,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:19,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:37:19,164 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)] === [2024-06-04 14:37:19,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:19,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2075713984, now seen corresponding path program 23 times [2024-06-04 14:37:19,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:19,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45454544] [2024-06-04 14:37:19,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:19,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:20,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:20,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45454544] [2024-06-04 14:37:20,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45454544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:20,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:20,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:20,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109101838] [2024-06-04 14:37:20,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:20,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:20,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:20,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:20,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:20,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:20,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 440 transitions, 4975 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:20,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:20,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:20,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:21,788 INFO L124 PetriNetUnfolderBase]: 1184/2096 cut-off events. [2024-06-04 14:37:21,788 INFO L125 PetriNetUnfolderBase]: For 147170/147170 co-relation queries the response was YES. [2024-06-04 14:37:21,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12804 conditions, 2096 events. 1184/2096 cut-off events. For 147170/147170 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 12480 event pairs, 135 based on Foata normal form. 2/2097 useless extension candidates. Maximal degree in co-relation 12615. Up to 984 conditions per place. [2024-06-04 14:37:21,818 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 227 changer transitions 0/501 dead transitions. [2024-06-04 14:37:21,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 501 transitions, 6698 flow [2024-06-04 14:37:21,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-04 14:37:21,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:37:21,819 INFO L175 Difference]: Start difference. First operand has 429 places, 440 transitions, 4975 flow. Second operand 11 states and 151 transitions. [2024-06-04 14:37:21,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 501 transitions, 6698 flow [2024-06-04 14:37:22,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 501 transitions, 6372 flow, removed 44 selfloop flow, removed 14 redundant places. [2024-06-04 14:37:22,619 INFO L231 Difference]: Finished difference. Result has 429 places, 468 transitions, 5461 flow [2024-06-04 14:37:22,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5461, PETRI_PLACES=429, PETRI_TRANSITIONS=468} [2024-06-04 14:37:22,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-04 14:37:22,619 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 468 transitions, 5461 flow [2024-06-04 14:37:22,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:22,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:22,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:22,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:37:22,620 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)] === [2024-06-04 14:37:22,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:22,620 INFO L85 PathProgramCache]: Analyzing trace with hash 581003912, now seen corresponding path program 24 times [2024-06-04 14:37:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:22,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935815817] [2024-06-04 14:37:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:24,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:24,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935815817] [2024-06-04 14:37:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935815817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:24,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:24,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:24,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217009245] [2024-06-04 14:37:24,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:24,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:24,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:24,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:24,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:24,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:24,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 468 transitions, 5461 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:24,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:24,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:24,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:25,322 INFO L124 PetriNetUnfolderBase]: 1186/2100 cut-off events. [2024-06-04 14:37:25,323 INFO L125 PetriNetUnfolderBase]: For 130210/130210 co-relation queries the response was YES. [2024-06-04 14:37:25,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12810 conditions, 2100 events. 1186/2100 cut-off events. For 130210/130210 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 12577 event pairs, 181 based on Foata normal form. 2/2101 useless extension candidates. Maximal degree in co-relation 12625. Up to 1871 conditions per place. [2024-06-04 14:37:25,353 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 424 selfloop transitions, 77 changer transitions 0/503 dead transitions. [2024-06-04 14:37:25,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 503 transitions, 6661 flow [2024-06-04 14:37:25,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:37:25,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:37:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-04 14:37:25,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-04 14:37:25,354 INFO L175 Difference]: Start difference. First operand has 429 places, 468 transitions, 5461 flow. Second operand 13 states and 157 transitions. [2024-06-04 14:37:25,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 503 transitions, 6661 flow [2024-06-04 14:37:25,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 503 transitions, 6356 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-04 14:37:25,896 INFO L231 Difference]: Finished difference. Result has 441 places, 478 transitions, 5490 flow [2024-06-04 14:37:25,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5158, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5490, PETRI_PLACES=441, PETRI_TRANSITIONS=478} [2024-06-04 14:37:25,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-04 14:37:25,897 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 478 transitions, 5490 flow [2024-06-04 14:37:25,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:25,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:25,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:25,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:37:25,898 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)] === [2024-06-04 14:37:25,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:25,898 INFO L85 PathProgramCache]: Analyzing trace with hash 857051683, now seen corresponding path program 1 times [2024-06-04 14:37:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:25,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471478918] [2024-06-04 14:37:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:25,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:27,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471478918] [2024-06-04 14:37:27,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471478918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:27,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:27,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:27,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463678331] [2024-06-04 14:37:27,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:27,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:27,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:27,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:27,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 478 transitions, 5490 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:27,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:27,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:27,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:28,771 INFO L124 PetriNetUnfolderBase]: 1227/2187 cut-off events. [2024-06-04 14:37:28,771 INFO L125 PetriNetUnfolderBase]: For 272408/272408 co-relation queries the response was YES. [2024-06-04 14:37:28,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14265 conditions, 2187 events. 1227/2187 cut-off events. For 272408/272408 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13132 event pairs, 189 based on Foata normal form. 8/2194 useless extension candidates. Maximal degree in co-relation 14075. Up to 1665 conditions per place. [2024-06-04 14:37:28,797 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 415 selfloop transitions, 74 changer transitions 21/512 dead transitions. [2024-06-04 14:37:28,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 512 transitions, 6930 flow [2024-06-04 14:37:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:37:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:37:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-04 14:37:28,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-04 14:37:28,798 INFO L175 Difference]: Start difference. First operand has 441 places, 478 transitions, 5490 flow. Second operand 13 states and 160 transitions. [2024-06-04 14:37:28,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 512 transitions, 6930 flow [2024-06-04 14:37:29,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 512 transitions, 6694 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:37:29,833 INFO L231 Difference]: Finished difference. Result has 446 places, 468 transitions, 5311 flow [2024-06-04 14:37:29,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5254, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5311, PETRI_PLACES=446, PETRI_TRANSITIONS=468} [2024-06-04 14:37:29,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-04 14:37:29,834 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 468 transitions, 5311 flow [2024-06-04 14:37:29,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:29,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:29,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:29,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:37:29,834 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)] === [2024-06-04 14:37:29,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1045524877, now seen corresponding path program 2 times [2024-06-04 14:37:29,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:29,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809584368] [2024-06-04 14:37:29,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:29,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:31,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:31,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809584368] [2024-06-04 14:37:31,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809584368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:31,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:31,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:31,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055894547] [2024-06-04 14:37:31,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:31,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:31,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:31,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:31,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:31,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:31,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 468 transitions, 5311 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:31,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:31,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:31,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:32,295 INFO L124 PetriNetUnfolderBase]: 1248/2236 cut-off events. [2024-06-04 14:37:32,295 INFO L125 PetriNetUnfolderBase]: For 366353/366353 co-relation queries the response was YES. [2024-06-04 14:37:32,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15587 conditions, 2236 events. 1248/2236 cut-off events. For 366353/366353 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13507 event pairs, 198 based on Foata normal form. 8/2243 useless extension candidates. Maximal degree in co-relation 15398. Up to 1836 conditions per place. [2024-06-04 14:37:32,325 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 412 selfloop transitions, 87 changer transitions 10/511 dead transitions. [2024-06-04 14:37:32,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 511 transitions, 6853 flow [2024-06-04 14:37:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:37:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:37:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-04 14:37:32,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-04 14:37:32,327 INFO L175 Difference]: Start difference. First operand has 446 places, 468 transitions, 5311 flow. Second operand 13 states and 157 transitions. [2024-06-04 14:37:32,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 511 transitions, 6853 flow [2024-06-04 14:37:33,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 511 transitions, 6488 flow, removed 20 selfloop flow, removed 17 redundant places. [2024-06-04 14:37:33,641 INFO L231 Difference]: Finished difference. Result has 437 places, 475 transitions, 5199 flow [2024-06-04 14:37:33,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4966, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5199, PETRI_PLACES=437, PETRI_TRANSITIONS=475} [2024-06-04 14:37:33,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-04 14:37:33,642 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 475 transitions, 5199 flow [2024-06-04 14:37:33,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:33,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:33,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:33,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:37:33,642 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)] === [2024-06-04 14:37:33,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2012701359, now seen corresponding path program 3 times [2024-06-04 14:37:33,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:33,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309472881] [2024-06-04 14:37:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:33,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:35,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:35,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309472881] [2024-06-04 14:37:35,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309472881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:35,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:35,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207655120] [2024-06-04 14:37:35,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:35,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:35,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:35,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:35,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 475 transitions, 5199 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:35,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:35,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:35,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:36,096 INFO L124 PetriNetUnfolderBase]: 1236/2220 cut-off events. [2024-06-04 14:37:36,096 INFO L125 PetriNetUnfolderBase]: For 350473/350473 co-relation queries the response was YES. [2024-06-04 14:37:36,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14948 conditions, 2220 events. 1236/2220 cut-off events. For 350473/350473 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 13455 event pairs, 196 based on Foata normal form. 8/2227 useless extension candidates. Maximal degree in co-relation 14767. Up to 1812 conditions per place. [2024-06-04 14:37:36,125 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 413 selfloop transitions, 79 changer transitions 13/507 dead transitions. [2024-06-04 14:37:36,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 507 transitions, 6623 flow [2024-06-04 14:37:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:37:36,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:37:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-04 14:37:36,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-04 14:37:36,126 INFO L175 Difference]: Start difference. First operand has 437 places, 475 transitions, 5199 flow. Second operand 13 states and 158 transitions. [2024-06-04 14:37:36,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 507 transitions, 6623 flow [2024-06-04 14:37:37,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 507 transitions, 6471 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:37,540 INFO L231 Difference]: Finished difference. Result has 440 places, 469 transitions, 5142 flow [2024-06-04 14:37:37,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5049, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5142, PETRI_PLACES=440, PETRI_TRANSITIONS=469} [2024-06-04 14:37:37,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-04 14:37:37,541 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 469 transitions, 5142 flow [2024-06-04 14:37:37,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:37,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:37,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:37,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:37:37,541 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)] === [2024-06-04 14:37:37,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1045529527, now seen corresponding path program 4 times [2024-06-04 14:37:37,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:37,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117415246] [2024-06-04 14:37:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:37,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:38,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:38,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117415246] [2024-06-04 14:37:38,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117415246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:38,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:38,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:38,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288699621] [2024-06-04 14:37:38,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:38,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:38,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:39,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:39,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 469 transitions, 5142 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:39,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:39,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:39,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:39,851 INFO L124 PetriNetUnfolderBase]: 1215/2189 cut-off events. [2024-06-04 14:37:39,852 INFO L125 PetriNetUnfolderBase]: For 386070/386070 co-relation queries the response was YES. [2024-06-04 14:37:39,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13550 conditions, 2189 events. 1215/2189 cut-off events. For 386070/386070 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13304 event pairs, 187 based on Foata normal form. 22/2210 useless extension candidates. Maximal degree in co-relation 13369. Up to 1784 conditions per place. [2024-06-04 14:37:39,879 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 382 selfloop transitions, 66 changer transitions 48/498 dead transitions. [2024-06-04 14:37:39,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 498 transitions, 6268 flow [2024-06-04 14:37:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 14:37:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 14:37:39,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 166 transitions. [2024-06-04 14:37:39,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458333333333333 [2024-06-04 14:37:39,881 INFO L175 Difference]: Start difference. First operand has 440 places, 469 transitions, 5142 flow. Second operand 15 states and 166 transitions. [2024-06-04 14:37:39,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 498 transitions, 6268 flow [2024-06-04 14:37:40,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 498 transitions, 6104 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:37:40,669 INFO L231 Difference]: Finished difference. Result has 439 places, 431 transitions, 4724 flow [2024-06-04 14:37:40,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4978, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4724, PETRI_PLACES=439, PETRI_TRANSITIONS=431} [2024-06-04 14:37:40,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 408 predicate places. [2024-06-04 14:37:40,669 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 431 transitions, 4724 flow [2024-06-04 14:37:40,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:40,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:40,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:40,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:37:40,670 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)] === [2024-06-04 14:37:40,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash -561996309, now seen corresponding path program 5 times [2024-06-04 14:37:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:40,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108341609] [2024-06-04 14:37:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:42,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:42,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108341609] [2024-06-04 14:37:42,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108341609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:42,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:42,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:42,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156191859] [2024-06-04 14:37:42,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:42,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:42,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:42,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:42,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:42,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 431 transitions, 4724 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:42,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:42,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:42,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:43,388 INFO L124 PetriNetUnfolderBase]: 1120/2016 cut-off events. [2024-06-04 14:37:43,389 INFO L125 PetriNetUnfolderBase]: For 259793/259793 co-relation queries the response was YES. [2024-06-04 14:37:43,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12598 conditions, 2016 events. 1120/2016 cut-off events. For 259793/259793 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 12085 event pairs, 181 based on Foata normal form. 8/2023 useless extension candidates. Maximal degree in co-relation 12418. Up to 1796 conditions per place. [2024-06-04 14:37:43,415 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 386 selfloop transitions, 53 changer transitions 17/458 dead transitions. [2024-06-04 14:37:43,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 458 transitions, 5781 flow [2024-06-04 14:37:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:37:43,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 14:37:43,417 INFO L175 Difference]: Start difference. First operand has 439 places, 431 transitions, 4724 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:37:43,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 458 transitions, 5781 flow [2024-06-04 14:37:44,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 458 transitions, 5438 flow, removed 14 selfloop flow, removed 25 redundant places. [2024-06-04 14:37:44,330 INFO L231 Difference]: Finished difference. Result has 419 places, 427 transitions, 4480 flow [2024-06-04 14:37:44,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4398, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4480, PETRI_PLACES=419, PETRI_TRANSITIONS=427} [2024-06-04 14:37:44,331 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-04 14:37:44,331 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 427 transitions, 4480 flow [2024-06-04 14:37:44,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:44,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:44,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:44,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:37:44,331 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)] === [2024-06-04 14:37:44,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:44,332 INFO L85 PathProgramCache]: Analyzing trace with hash -562111629, now seen corresponding path program 6 times [2024-06-04 14:37:44,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:44,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788658813] [2024-06-04 14:37:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:44,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:45,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788658813] [2024-06-04 14:37:45,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788658813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:45,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:45,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:45,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989905363] [2024-06-04 14:37:45,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:45,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:45,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:45,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:46,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:46,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 427 transitions, 4480 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:46,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:46,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:46,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:46,788 INFO L124 PetriNetUnfolderBase]: 1104/1988 cut-off events. [2024-06-04 14:37:46,789 INFO L125 PetriNetUnfolderBase]: For 260456/260456 co-relation queries the response was YES. [2024-06-04 14:37:46,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12143 conditions, 1988 events. 1104/1988 cut-off events. For 260456/260456 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 11831 event pairs, 173 based on Foata normal form. 8/1995 useless extension candidates. Maximal degree in co-relation 11967. Up to 1673 conditions per place. [2024-06-04 14:37:46,810 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 391 selfloop transitions, 45 changer transitions 17/455 dead transitions. [2024-06-04 14:37:46,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 455 transitions, 5782 flow [2024-06-04 14:37:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 14:37:46,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 14:37:46,811 INFO L175 Difference]: Start difference. First operand has 419 places, 427 transitions, 4480 flow. Second operand 12 states and 140 transitions. [2024-06-04 14:37:46,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 455 transitions, 5782 flow [2024-06-04 14:37:47,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 455 transitions, 5667 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:47,703 INFO L231 Difference]: Finished difference. Result has 417 places, 417 transitions, 4372 flow [2024-06-04 14:37:47,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4367, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4372, PETRI_PLACES=417, PETRI_TRANSITIONS=417} [2024-06-04 14:37:47,704 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-04 14:37:47,704 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 417 transitions, 4372 flow [2024-06-04 14:37:47,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:47,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:47,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:47,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:37:47,704 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)] === [2024-06-04 14:37:47,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:47,705 INFO L85 PathProgramCache]: Analyzing trace with hash -557350029, now seen corresponding path program 7 times [2024-06-04 14:37:47,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:47,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965649065] [2024-06-04 14:37:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:47,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:50,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:50,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965649065] [2024-06-04 14:37:50,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965649065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:50,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:50,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:50,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426123073] [2024-06-04 14:37:50,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:50,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:50,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:50,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:50,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:50,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 417 transitions, 4372 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:50,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:50,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:50,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:50,995 INFO L124 PetriNetUnfolderBase]: 1081/1947 cut-off events. [2024-06-04 14:37:50,996 INFO L125 PetriNetUnfolderBase]: For 260398/260398 co-relation queries the response was YES. [2024-06-04 14:37:51,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11690 conditions, 1947 events. 1081/1947 cut-off events. For 260398/260398 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11559 event pairs, 182 based on Foata normal form. 10/1956 useless extension candidates. Maximal degree in co-relation 11515. Up to 1747 conditions per place. [2024-06-04 14:37:51,023 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 380 selfloop transitions, 37 changer transitions 20/439 dead transitions. [2024-06-04 14:37:51,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 439 transitions, 5342 flow [2024-06-04 14:37:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:51,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 14:37:51,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:37:51,024 INFO L175 Difference]: Start difference. First operand has 417 places, 417 transitions, 4372 flow. Second operand 12 states and 132 transitions. [2024-06-04 14:37:51,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 439 transitions, 5342 flow [2024-06-04 14:37:52,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 439 transitions, 5248 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 14:37:52,068 INFO L231 Difference]: Finished difference. Result has 411 places, 405 transitions, 4240 flow [2024-06-04 14:37:52,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4278, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4240, PETRI_PLACES=411, PETRI_TRANSITIONS=405} [2024-06-04 14:37:52,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-04 14:37:52,069 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 405 transitions, 4240 flow [2024-06-04 14:37:52,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:52,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:52,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:52,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:37:52,069 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)] === [2024-06-04 14:37:52,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:52,070 INFO L85 PathProgramCache]: Analyzing trace with hash -557527659, now seen corresponding path program 8 times [2024-06-04 14:37:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:52,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535581968] [2024-06-04 14:37:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:52,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:53,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:53,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535581968] [2024-06-04 14:37:53,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535581968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:53,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:53,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712367083] [2024-06-04 14:37:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:53,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:53,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 405 transitions, 4240 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:53,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:53,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:53,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:54,473 INFO L124 PetriNetUnfolderBase]: 1015/1837 cut-off events. [2024-06-04 14:37:54,473 INFO L125 PetriNetUnfolderBase]: For 170341/170341 co-relation queries the response was YES. [2024-06-04 14:37:54,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10104 conditions, 1837 events. 1015/1837 cut-off events. For 170341/170341 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 10910 event pairs, 160 based on Foata normal form. 8/1844 useless extension candidates. Maximal degree in co-relation 9931. Up to 1673 conditions per place. [2024-06-04 14:37:54,498 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 378 selfloop transitions, 29 changer transitions 17/426 dead transitions. [2024-06-04 14:37:54,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 426 transitions, 5166 flow [2024-06-04 14:37:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:37:54,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-04 14:37:54,499 INFO L175 Difference]: Start difference. First operand has 411 places, 405 transitions, 4240 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:37:54,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 426 transitions, 5166 flow [2024-06-04 14:37:55,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 426 transitions, 5088 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:55,206 INFO L231 Difference]: Finished difference. Result has 409 places, 396 transitions, 4140 flow [2024-06-04 14:37:55,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4162, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4140, PETRI_PLACES=409, PETRI_TRANSITIONS=396} [2024-06-04 14:37:55,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-04 14:37:55,206 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 396 transitions, 4140 flow [2024-06-04 14:37:55,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:55,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:55,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:55,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:37:55,207 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)] === [2024-06-04 14:37:55,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1395710055, now seen corresponding path program 1 times [2024-06-04 14:37:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915708150] [2024-06-04 14:37:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:56,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:56,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915708150] [2024-06-04 14:37:56,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915708150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:56,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:56,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:56,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839775050] [2024-06-04 14:37:56,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:56,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:56,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:56,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:37:56,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 396 transitions, 4140 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:56,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:56,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:37:56,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:57,586 INFO L124 PetriNetUnfolderBase]: 991/1789 cut-off events. [2024-06-04 14:37:57,587 INFO L125 PetriNetUnfolderBase]: For 120235/120235 co-relation queries the response was YES. [2024-06-04 14:37:57,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9897 conditions, 1789 events. 991/1789 cut-off events. For 120235/120235 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10631 event pairs, 80 based on Foata normal form. 2/1790 useless extension candidates. Maximal degree in co-relation 9725. Up to 1213 conditions per place. [2024-06-04 14:37:57,609 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 149 changer transitions 0/415 dead transitions. [2024-06-04 14:37:57,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 415 transitions, 5046 flow [2024-06-04 14:37:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:37:57,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:37:57,611 INFO L175 Difference]: Start difference. First operand has 409 places, 396 transitions, 4140 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:37:57,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 415 transitions, 5046 flow [2024-06-04 14:37:58,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 415 transitions, 4916 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-06-04 14:37:58,094 INFO L231 Difference]: Finished difference. Result has 397 places, 397 transitions, 4336 flow [2024-06-04 14:37:58,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4336, PETRI_PLACES=397, PETRI_TRANSITIONS=397} [2024-06-04 14:37:58,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-04 14:37:58,094 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 397 transitions, 4336 flow [2024-06-04 14:37:58,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:58,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:58,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:58,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:37:58,095 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)] === [2024-06-04 14:37:58,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1395716999, now seen corresponding path program 9 times [2024-06-04 14:37:58,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:58,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582772293] [2024-06-04 14:37:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:58,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:00,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:00,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582772293] [2024-06-04 14:38:00,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582772293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:00,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:00,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:00,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327164488] [2024-06-04 14:38:00,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:00,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:00,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:00,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:00,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:00,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:00,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 397 transitions, 4336 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:00,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:00,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:00,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:01,012 INFO L124 PetriNetUnfolderBase]: 1007/1825 cut-off events. [2024-06-04 14:38:01,013 INFO L125 PetriNetUnfolderBase]: For 182659/182659 co-relation queries the response was YES. [2024-06-04 14:38:01,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10288 conditions, 1825 events. 1007/1825 cut-off events. For 182659/182659 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10810 event pairs, 116 based on Foata normal form. 10/1834 useless extension candidates. Maximal degree in co-relation 10118. Up to 839 conditions per place. [2024-06-04 14:38:01,037 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 179 changer transitions 18/421 dead transitions. [2024-06-04 14:38:01,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 421 transitions, 5288 flow [2024-06-04 14:38:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-04 14:38:01,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-04 14:38:01,038 INFO L175 Difference]: Start difference. First operand has 397 places, 397 transitions, 4336 flow. Second operand 12 states and 154 transitions. [2024-06-04 14:38:01,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 421 transitions, 5288 flow [2024-06-04 14:38:01,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 421 transitions, 4976 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 14:38:01,609 INFO L231 Difference]: Finished difference. Result has 400 places, 385 transitions, 4297 flow [2024-06-04 14:38:01,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4024, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4297, PETRI_PLACES=400, PETRI_TRANSITIONS=385} [2024-06-04 14:38:01,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-04 14:38:01,610 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 385 transitions, 4297 flow [2024-06-04 14:38:01,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:01,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:01,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:01,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:38:01,610 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)] === [2024-06-04 14:38:01,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1395894629, now seen corresponding path program 10 times [2024-06-04 14:38:01,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:01,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566210949] [2024-06-04 14:38:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:01,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:02,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:02,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566210949] [2024-06-04 14:38:02,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566210949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:02,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:02,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:38:02,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449761677] [2024-06-04 14:38:02,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:02,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:38:02,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:02,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:38:02,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:38:02,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:02,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 385 transitions, 4297 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:02,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:02,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:02,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:03,516 INFO L124 PetriNetUnfolderBase]: 999/1833 cut-off events. [2024-06-04 14:38:03,516 INFO L125 PetriNetUnfolderBase]: For 266366/266366 co-relation queries the response was YES. [2024-06-04 14:38:03,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11907 conditions, 1833 events. 999/1833 cut-off events. For 266366/266366 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 10955 event pairs, 128 based on Foata normal form. 8/1840 useless extension candidates. Maximal degree in co-relation 11736. Up to 805 conditions per place. [2024-06-04 14:38:03,540 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 174 changer transitions 11/412 dead transitions. [2024-06-04 14:38:03,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 412 transitions, 5531 flow [2024-06-04 14:38:03,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 14:38:03,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 14:38:03,542 INFO L175 Difference]: Start difference. First operand has 400 places, 385 transitions, 4297 flow. Second operand 11 states and 146 transitions. [2024-06-04 14:38:03,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 412 transitions, 5531 flow [2024-06-04 14:38:04,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 412 transitions, 5157 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 14:38:04,341 INFO L231 Difference]: Finished difference. Result has 395 places, 379 transitions, 4232 flow [2024-06-04 14:38:04,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3929, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4232, PETRI_PLACES=395, PETRI_TRANSITIONS=379} [2024-06-04 14:38:04,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-04 14:38:04,342 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 379 transitions, 4232 flow [2024-06-04 14:38:04,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:04,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:04,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:04,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:38:04,342 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)] === [2024-06-04 14:38:04,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1389223305, now seen corresponding path program 2 times [2024-06-04 14:38:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:04,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462364714] [2024-06-04 14:38:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:06,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:06,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462364714] [2024-06-04 14:38:06,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462364714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:06,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:06,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:06,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902263293] [2024-06-04 14:38:06,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:06,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:06,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:06,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:06,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:06,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:06,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 379 transitions, 4232 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:06,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:06,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:06,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:07,275 INFO L124 PetriNetUnfolderBase]: 972/1780 cut-off events. [2024-06-04 14:38:07,276 INFO L125 PetriNetUnfolderBase]: For 195653/195653 co-relation queries the response was YES. [2024-06-04 14:38:07,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11369 conditions, 1780 events. 972/1780 cut-off events. For 195653/195653 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10561 event pairs, 88 based on Foata normal form. 2/1781 useless extension candidates. Maximal degree in co-relation 11200. Up to 1179 conditions per place. [2024-06-04 14:38:07,299 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 155 changer transitions 0/397 dead transitions. [2024-06-04 14:38:07,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 397 transitions, 5098 flow [2024-06-04 14:38:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:38:07,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:38:07,301 INFO L175 Difference]: Start difference. First operand has 395 places, 379 transitions, 4232 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:38:07,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 397 transitions, 5098 flow [2024-06-04 14:38:08,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 397 transitions, 4756 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:38:08,321 INFO L231 Difference]: Finished difference. Result has 393 places, 380 transitions, 4230 flow [2024-06-04 14:38:08,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3890, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4230, PETRI_PLACES=393, PETRI_TRANSITIONS=380} [2024-06-04 14:38:08,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-04 14:38:08,321 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 380 transitions, 4230 flow [2024-06-04 14:38:08,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:08,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:08,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:08,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 14:38:08,322 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)] === [2024-06-04 14:38:08,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:08,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1389214935, now seen corresponding path program 3 times [2024-06-04 14:38:08,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:08,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692118545] [2024-06-04 14:38:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:10,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:10,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692118545] [2024-06-04 14:38:10,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692118545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:10,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:10,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:10,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175176674] [2024-06-04 14:38:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:10,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:10,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:10,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:10,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:10,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:10,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 380 transitions, 4230 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:10,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:10,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:10,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:10,787 INFO L124 PetriNetUnfolderBase]: 1012/1860 cut-off events. [2024-06-04 14:38:10,787 INFO L125 PetriNetUnfolderBase]: For 286140/286140 co-relation queries the response was YES. [2024-06-04 14:38:10,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13224 conditions, 1860 events. 1012/1860 cut-off events. For 286140/286140 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11155 event pairs, 139 based on Foata normal form. 2/1861 useless extension candidates. Maximal degree in co-relation 13056. Up to 838 conditions per place. [2024-06-04 14:38:10,810 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 195 changer transitions 0/405 dead transitions. [2024-06-04 14:38:10,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 405 transitions, 5438 flow [2024-06-04 14:38:10,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 14:38:10,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:38:10,812 INFO L175 Difference]: Start difference. First operand has 393 places, 380 transitions, 4230 flow. Second operand 11 states and 144 transitions. [2024-06-04 14:38:10,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 405 transitions, 5438 flow [2024-06-04 14:38:11,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 405 transitions, 5112 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 14:38:11,897 INFO L231 Difference]: Finished difference. Result has 395 places, 382 transitions, 4348 flow [2024-06-04 14:38:11,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4348, PETRI_PLACES=395, PETRI_TRANSITIONS=382} [2024-06-04 14:38:11,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-04 14:38:11,897 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 382 transitions, 4348 flow [2024-06-04 14:38:11,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:11,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:11,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:11,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 14:38:11,898 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)] === [2024-06-04 14:38:11,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1994786573, now seen corresponding path program 11 times [2024-06-04 14:38:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:11,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537031851] [2024-06-04 14:38:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:13,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:13,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537031851] [2024-06-04 14:38:13,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537031851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:13,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:13,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164359850] [2024-06-04 14:38:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:13,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:13,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:13,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 382 transitions, 4348 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:13,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:13,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:13,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:14,473 INFO L124 PetriNetUnfolderBase]: 1014/1870 cut-off events. [2024-06-04 14:38:14,473 INFO L125 PetriNetUnfolderBase]: For 321043/321043 co-relation queries the response was YES. [2024-06-04 14:38:14,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12855 conditions, 1870 events. 1014/1870 cut-off events. For 321043/321043 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11283 event pairs, 119 based on Foata normal form. 10/1879 useless extension candidates. Maximal degree in co-relation 12686. Up to 1236 conditions per place. [2024-06-04 14:38:14,498 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 243 selfloop transitions, 145 changer transitions 15/405 dead transitions. [2024-06-04 14:38:14,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 405 transitions, 5262 flow [2024-06-04 14:38:14,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:14,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:14,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 14:38:14,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 14:38:14,499 INFO L175 Difference]: Start difference. First operand has 395 places, 382 transitions, 4348 flow. Second operand 12 states and 146 transitions. [2024-06-04 14:38:14,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 405 transitions, 5262 flow [2024-06-04 14:38:15,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 405 transitions, 4989 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 14:38:15,465 INFO L231 Difference]: Finished difference. Result has 400 places, 375 transitions, 4303 flow [2024-06-04 14:38:15,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4303, PETRI_PLACES=400, PETRI_TRANSITIONS=375} [2024-06-04 14:38:15,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-04 14:38:15,465 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 375 transitions, 4303 flow [2024-06-04 14:38:15,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:15,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:15,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:15,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 14:38:15,466 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)] === [2024-06-04 14:38:15,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2123049203, now seen corresponding path program 12 times [2024-06-04 14:38:15,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:15,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738912603] [2024-06-04 14:38:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:15,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:16,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:16,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738912603] [2024-06-04 14:38:16,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738912603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:16,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:16,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646314694] [2024-06-04 14:38:16,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:16,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:16,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:17,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:17,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 375 transitions, 4303 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:17,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:17,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:17,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:17,812 INFO L124 PetriNetUnfolderBase]: 990/1838 cut-off events. [2024-06-04 14:38:17,812 INFO L125 PetriNetUnfolderBase]: For 325459/325459 co-relation queries the response was YES. [2024-06-04 14:38:17,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12867 conditions, 1838 events. 990/1838 cut-off events. For 325459/325459 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11086 event pairs, 109 based on Foata normal form. 10/1847 useless extension candidates. Maximal degree in co-relation 12696. Up to 1117 conditions per place. [2024-06-04 14:38:17,831 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 161 changer transitions 14/399 dead transitions. [2024-06-04 14:38:17,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 399 transitions, 5211 flow [2024-06-04 14:38:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 14:38:17,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 14:38:17,848 INFO L175 Difference]: Start difference. First operand has 400 places, 375 transitions, 4303 flow. Second operand 12 states and 152 transitions. [2024-06-04 14:38:17,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 399 transitions, 5211 flow [2024-06-04 14:38:18,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 399 transitions, 4917 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:18,830 INFO L231 Difference]: Finished difference. Result has 398 places, 369 transitions, 4285 flow [2024-06-04 14:38:18,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4285, PETRI_PLACES=398, PETRI_TRANSITIONS=369} [2024-06-04 14:38:18,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-04 14:38:18,831 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 369 transitions, 4285 flow [2024-06-04 14:38:18,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:18,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:18,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:18,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 14:38:18,832 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)] === [2024-06-04 14:38:18,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1566597059, now seen corresponding path program 13 times [2024-06-04 14:38:18,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:18,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296100771] [2024-06-04 14:38:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:20,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:20,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296100771] [2024-06-04 14:38:20,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296100771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:20,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:20,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:20,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242220759] [2024-06-04 14:38:20,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:20,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:20,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:20,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:20,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:20,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 369 transitions, 4285 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:20,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:20,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:20,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:21,055 INFO L124 PetriNetUnfolderBase]: 970/1806 cut-off events. [2024-06-04 14:38:21,055 INFO L125 PetriNetUnfolderBase]: For 304473/304473 co-relation queries the response was YES. [2024-06-04 14:38:21,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12724 conditions, 1806 events. 970/1806 cut-off events. For 304473/304473 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10861 event pairs, 133 based on Foata normal form. 8/1813 useless extension candidates. Maximal degree in co-relation 12554. Up to 874 conditions per place. [2024-06-04 14:38:21,081 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 179 changer transitions 13/392 dead transitions. [2024-06-04 14:38:21,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 392 transitions, 5161 flow [2024-06-04 14:38:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:38:21,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 14:38:21,091 INFO L175 Difference]: Start difference. First operand has 398 places, 369 transitions, 4285 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:38:21,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 392 transitions, 5161 flow [2024-06-04 14:38:21,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 392 transitions, 4835 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:21,999 INFO L231 Difference]: Finished difference. Result has 396 places, 364 transitions, 4280 flow [2024-06-04 14:38:22,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3959, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4280, PETRI_PLACES=396, PETRI_TRANSITIONS=364} [2024-06-04 14:38:22,013 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-04 14:38:22,013 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 364 transitions, 4280 flow [2024-06-04 14:38:22,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:22,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:22,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:22,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 14:38:22,013 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)] === [2024-06-04 14:38:22,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:22,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1566712379, now seen corresponding path program 14 times [2024-06-04 14:38:22,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:22,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603769420] [2024-06-04 14:38:22,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:22,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:23,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:23,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603769420] [2024-06-04 14:38:23,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603769420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:23,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:23,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:23,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282982137] [2024-06-04 14:38:23,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:23,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:23,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:23,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 364 transitions, 4280 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:23,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:23,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:23,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:24,539 INFO L124 PetriNetUnfolderBase]: 989/1847 cut-off events. [2024-06-04 14:38:24,539 INFO L125 PetriNetUnfolderBase]: For 376710/376710 co-relation queries the response was YES. [2024-06-04 14:38:24,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14145 conditions, 1847 events. 989/1847 cut-off events. For 376710/376710 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11112 event pairs, 118 based on Foata normal form. 8/1854 useless extension candidates. Maximal degree in co-relation 13976. Up to 984 conditions per place. [2024-06-04 14:38:24,562 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 152 changer transitions 14/393 dead transitions. [2024-06-04 14:38:24,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 393 transitions, 5458 flow [2024-06-04 14:38:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-04 14:38:24,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-04 14:38:24,563 INFO L175 Difference]: Start difference. First operand has 396 places, 364 transitions, 4280 flow. Second operand 12 states and 155 transitions. [2024-06-04 14:38:24,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 393 transitions, 5458 flow [2024-06-04 14:38:25,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 393 transitions, 5085 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:25,684 INFO L231 Difference]: Finished difference. Result has 392 places, 357 transitions, 4155 flow [2024-06-04 14:38:25,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3911, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4155, PETRI_PLACES=392, PETRI_TRANSITIONS=357} [2024-06-04 14:38:25,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-04 14:38:25,692 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 357 transitions, 4155 flow [2024-06-04 14:38:25,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:25,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:25,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:25,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 14:38:25,692 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)] === [2024-06-04 14:38:25,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:25,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1561943835, now seen corresponding path program 4 times [2024-06-04 14:38:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:25,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109366003] [2024-06-04 14:38:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:25,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:27,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:27,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109366003] [2024-06-04 14:38:27,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109366003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:27,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692749075] [2024-06-04 14:38:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:27,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:27,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:27,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 357 transitions, 4155 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:27,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:27,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:27,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:27,674 INFO L124 PetriNetUnfolderBase]: 945/1763 cut-off events. [2024-06-04 14:38:27,674 INFO L125 PetriNetUnfolderBase]: For 310693/310693 co-relation queries the response was YES. [2024-06-04 14:38:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12207 conditions, 1763 events. 945/1763 cut-off events. For 310693/310693 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10594 event pairs, 140 based on Foata normal form. 12/1774 useless extension candidates. Maximal degree in co-relation 12040. Up to 875 conditions per place. [2024-06-04 14:38:27,696 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 160 changer transitions 10/380 dead transitions. [2024-06-04 14:38:27,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 380 transitions, 5023 flow [2024-06-04 14:38:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 14:38:27,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:38:27,698 INFO L175 Difference]: Start difference. First operand has 392 places, 357 transitions, 4155 flow. Second operand 11 states and 143 transitions. [2024-06-04 14:38:27,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 380 transitions, 5023 flow [2024-06-04 14:38:28,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 380 transitions, 4663 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-04 14:38:28,477 INFO L231 Difference]: Finished difference. Result has 384 places, 351 transitions, 4067 flow [2024-06-04 14:38:28,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4067, PETRI_PLACES=384, PETRI_TRANSITIONS=351} [2024-06-04 14:38:28,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-04 14:38:28,478 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 351 transitions, 4067 flow [2024-06-04 14:38:28,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:28,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:28,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:28,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 14:38:28,479 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)] === [2024-06-04 14:38:28,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:28,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1561950779, now seen corresponding path program 15 times [2024-06-04 14:38:28,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:28,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116540307] [2024-06-04 14:38:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:28,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:30,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:30,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116540307] [2024-06-04 14:38:30,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116540307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:30,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:30,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:30,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517589838] [2024-06-04 14:38:30,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:30,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:30,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:30,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:30,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:30,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 351 transitions, 4067 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:30,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:30,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:30,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:31,401 INFO L124 PetriNetUnfolderBase]: 922/1726 cut-off events. [2024-06-04 14:38:31,401 INFO L125 PetriNetUnfolderBase]: For 266240/266240 co-relation queries the response was YES. [2024-06-04 14:38:31,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11661 conditions, 1726 events. 922/1726 cut-off events. For 266240/266240 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10389 event pairs, 117 based on Foata normal form. 10/1735 useless extension candidates. Maximal degree in co-relation 11498. Up to 1072 conditions per place. [2024-06-04 14:38:31,421 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 132 changer transitions 15/375 dead transitions. [2024-06-04 14:38:31,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 375 transitions, 4927 flow [2024-06-04 14:38:31,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 14:38:31,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 14:38:31,436 INFO L175 Difference]: Start difference. First operand has 384 places, 351 transitions, 4067 flow. Second operand 12 states and 148 transitions. [2024-06-04 14:38:31,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 375 transitions, 4927 flow [2024-06-04 14:38:32,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 375 transitions, 4542 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-04 14:38:32,269 INFO L231 Difference]: Finished difference. Result has 382 places, 342 transitions, 3871 flow [2024-06-04 14:38:32,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3871, PETRI_PLACES=382, PETRI_TRANSITIONS=342} [2024-06-04 14:38:32,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-04 14:38:32,270 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 342 transitions, 3871 flow [2024-06-04 14:38:32,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:32,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:32,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:32,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 14:38:32,271 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)] === [2024-06-04 14:38:32,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:32,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1562128409, now seen corresponding path program 16 times [2024-06-04 14:38:32,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:32,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974970317] [2024-06-04 14:38:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:32,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:33,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:33,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974970317] [2024-06-04 14:38:33,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974970317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:33,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:33,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:33,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252364965] [2024-06-04 14:38:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:33,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:33,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:33,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:34,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:34,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 342 transitions, 3871 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:34,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:34,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:34,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:34,827 INFO L124 PetriNetUnfolderBase]: 866/1630 cut-off events. [2024-06-04 14:38:34,828 INFO L125 PetriNetUnfolderBase]: For 193593/193593 co-relation queries the response was YES. [2024-06-04 14:38:34,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10116 conditions, 1630 events. 866/1630 cut-off events. For 193593/193593 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9728 event pairs, 110 based on Foata normal form. 8/1637 useless extension candidates. Maximal degree in co-relation 9954. Up to 763 conditions per place. [2024-06-04 14:38:34,846 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 197 selfloop transitions, 152 changer transitions 14/365 dead transitions. [2024-06-04 14:38:34,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 365 transitions, 4693 flow [2024-06-04 14:38:34,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:34,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 14:38:34,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 14:38:34,848 INFO L175 Difference]: Start difference. First operand has 382 places, 342 transitions, 3871 flow. Second operand 12 states and 147 transitions. [2024-06-04 14:38:34,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 365 transitions, 4693 flow [2024-06-04 14:38:35,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 365 transitions, 4398 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-04 14:38:35,461 INFO L231 Difference]: Finished difference. Result has 376 places, 336 transitions, 3834 flow [2024-06-04 14:38:35,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3834, PETRI_PLACES=376, PETRI_TRANSITIONS=336} [2024-06-04 14:38:35,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-04 14:38:35,462 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 336 transitions, 3834 flow [2024-06-04 14:38:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:35,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:35,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:35,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 14:38:35,462 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)] === [2024-06-04 14:38:35,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:35,463 INFO L85 PathProgramCache]: Analyzing trace with hash 823045911, now seen corresponding path program 5 times [2024-06-04 14:38:35,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:35,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371900617] [2024-06-04 14:38:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:35,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371900617] [2024-06-04 14:38:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371900617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:36,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:36,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:36,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760238795] [2024-06-04 14:38:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:36,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:36,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:37,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:37,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 336 transitions, 3834 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:37,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:37,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:37,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:37,572 INFO L124 PetriNetUnfolderBase]: 854/1610 cut-off events. [2024-06-04 14:38:37,573 INFO L125 PetriNetUnfolderBase]: For 183219/183219 co-relation queries the response was YES. [2024-06-04 14:38:37,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10019 conditions, 1610 events. 854/1610 cut-off events. For 183219/183219 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9611 event pairs, 152 based on Foata normal form. 8/1617 useless extension candidates. Maximal degree in co-relation 9860. Up to 1477 conditions per place. [2024-06-04 14:38:37,591 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 310 selfloop transitions, 29 changer transitions 16/357 dead transitions. [2024-06-04 14:38:37,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 357 transitions, 4640 flow [2024-06-04 14:38:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:38:37,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 14:38:37,593 INFO L175 Difference]: Start difference. First operand has 376 places, 336 transitions, 3834 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:38:37,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 357 transitions, 4640 flow [2024-06-04 14:38:38,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 357 transitions, 4199 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-04 14:38:38,084 INFO L231 Difference]: Finished difference. Result has 368 places, 330 transitions, 3360 flow [2024-06-04 14:38:38,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3393, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3360, PETRI_PLACES=368, PETRI_TRANSITIONS=330} [2024-06-04 14:38:38,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-04 14:38:38,085 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 330 transitions, 3360 flow [2024-06-04 14:38:38,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:38,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:38,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:38,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 14:38:38,086 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)] === [2024-06-04 14:38:38,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash 953599635, now seen corresponding path program 6 times [2024-06-04 14:38:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:38,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115051885] [2024-06-04 14:38:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:39,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:39,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115051885] [2024-06-04 14:38:39,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115051885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:39,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:39,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:39,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582242339] [2024-06-04 14:38:39,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:39,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:39,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:39,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:39,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:39,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:39,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 330 transitions, 3360 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:39,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:39,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:39,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:40,223 INFO L124 PetriNetUnfolderBase]: 837/1579 cut-off events. [2024-06-04 14:38:40,224 INFO L125 PetriNetUnfolderBase]: For 178446/178446 co-relation queries the response was YES. [2024-06-04 14:38:40,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9447 conditions, 1579 events. 837/1579 cut-off events. For 178446/178446 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9371 event pairs, 135 based on Foata normal form. 8/1586 useless extension candidates. Maximal degree in co-relation 9290. Up to 1448 conditions per place. [2024-06-04 14:38:40,241 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 303 selfloop transitions, 28 changer transitions 17/350 dead transitions. [2024-06-04 14:38:40,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 350 transitions, 4144 flow [2024-06-04 14:38:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:38:40,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 14:38:40,242 INFO L175 Difference]: Start difference. First operand has 368 places, 330 transitions, 3360 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:38:40,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 350 transitions, 4144 flow [2024-06-04 14:38:40,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 350 transitions, 4078 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:38:40,757 INFO L231 Difference]: Finished difference. Result has 364 places, 324 transitions, 3311 flow [2024-06-04 14:38:40,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3311, PETRI_PLACES=364, PETRI_TRANSITIONS=324} [2024-06-04 14:38:40,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-04 14:38:40,758 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 324 transitions, 3311 flow [2024-06-04 14:38:40,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:40,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:40,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:40,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 14:38:40,758 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)] === [2024-06-04 14:38:40,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash 586862181, now seen corresponding path program 7 times [2024-06-04 14:38:40,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:40,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305529393] [2024-06-04 14:38:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:42,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:42,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305529393] [2024-06-04 14:38:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305529393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:42,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:38:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288285286] [2024-06-04 14:38:42,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:42,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:38:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:38:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:38:42,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:42,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 324 transitions, 3311 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:42,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:42,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:42,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:42,928 INFO L124 PetriNetUnfolderBase]: 813/1527 cut-off events. [2024-06-04 14:38:42,929 INFO L125 PetriNetUnfolderBase]: For 137557/137557 co-relation queries the response was YES. [2024-06-04 14:38:42,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9247 conditions, 1527 events. 813/1527 cut-off events. For 137557/137557 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9002 event pairs, 140 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 9092. Up to 1405 conditions per place. [2024-06-04 14:38:42,946 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 296 selfloop transitions, 44 changer transitions 0/342 dead transitions. [2024-06-04 14:38:42,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 342 transitions, 4071 flow [2024-06-04 14:38:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:38:42,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:38:42,947 INFO L175 Difference]: Start difference. First operand has 364 places, 324 transitions, 3311 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:38:42,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 342 transitions, 4071 flow [2024-06-04 14:38:43,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 342 transitions, 4007 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:38:43,372 INFO L231 Difference]: Finished difference. Result has 357 places, 325 transitions, 3368 flow [2024-06-04 14:38:43,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3247, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3368, PETRI_PLACES=357, PETRI_TRANSITIONS=325} [2024-06-04 14:38:43,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-04 14:38:43,373 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 325 transitions, 3368 flow [2024-06-04 14:38:43,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:43,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:43,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:43,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 14:38:43,373 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)] === [2024-06-04 14:38:43,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash 559478053, now seen corresponding path program 8 times [2024-06-04 14:38:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:43,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957812782] [2024-06-04 14:38:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:43,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:45,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:45,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957812782] [2024-06-04 14:38:45,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957812782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:45,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:45,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:45,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817212973] [2024-06-04 14:38:45,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:45,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:45,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:45,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:45,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:45,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:45,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 325 transitions, 3368 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:45,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:45,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:45,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:46,172 INFO L124 PetriNetUnfolderBase]: 817/1535 cut-off events. [2024-06-04 14:38:46,173 INFO L125 PetriNetUnfolderBase]: For 133391/133391 co-relation queries the response was YES. [2024-06-04 14:38:46,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9328 conditions, 1535 events. 817/1535 cut-off events. For 133391/133391 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9036 event pairs, 127 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 9176. Up to 1369 conditions per place. [2024-06-04 14:38:46,188 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 288 selfloop transitions, 53 changer transitions 0/343 dead transitions. [2024-06-04 14:38:46,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 343 transitions, 4132 flow [2024-06-04 14:38:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 14:38:46,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:38:46,189 INFO L175 Difference]: Start difference. First operand has 357 places, 325 transitions, 3368 flow. Second operand 11 states and 132 transitions. [2024-06-04 14:38:46,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 343 transitions, 4132 flow [2024-06-04 14:38:46,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 343 transitions, 4023 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 14:38:46,596 INFO L231 Difference]: Finished difference. Result has 359 places, 326 transitions, 3400 flow [2024-06-04 14:38:46,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3400, PETRI_PLACES=359, PETRI_TRANSITIONS=326} [2024-06-04 14:38:46,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 14:38:46,597 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 326 transitions, 3400 flow [2024-06-04 14:38:46,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:46,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:46,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:46,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 14:38:46,597 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)] === [2024-06-04 14:38:46,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash 586682257, now seen corresponding path program 17 times [2024-06-04 14:38:46,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:46,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518288553] [2024-06-04 14:38:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:46,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:48,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:48,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518288553] [2024-06-04 14:38:48,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518288553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:48,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:48,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:48,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480206716] [2024-06-04 14:38:48,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:48,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:48,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:48,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:48,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 326 transitions, 3400 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:48,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:48,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:48,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:48,845 INFO L124 PetriNetUnfolderBase]: 833/1571 cut-off events. [2024-06-04 14:38:48,845 INFO L125 PetriNetUnfolderBase]: For 187457/187457 co-relation queries the response was YES. [2024-06-04 14:38:48,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9487 conditions, 1571 events. 833/1571 cut-off events. For 187457/187457 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9314 event pairs, 144 based on Foata normal form. 10/1580 useless extension candidates. Maximal degree in co-relation 9334. Up to 1372 conditions per place. [2024-06-04 14:38:48,862 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 291 selfloop transitions, 49 changer transitions 9/351 dead transitions. [2024-06-04 14:38:48,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 351 transitions, 4214 flow [2024-06-04 14:38:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:38:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:38:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-04 14:38:48,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-04 14:38:48,863 INFO L175 Difference]: Start difference. First operand has 359 places, 326 transitions, 3400 flow. Second operand 13 states and 153 transitions. [2024-06-04 14:38:48,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 351 transitions, 4214 flow [2024-06-04 14:38:49,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 351 transitions, 4085 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 14:38:49,314 INFO L231 Difference]: Finished difference. Result has 363 places, 323 transitions, 3353 flow [2024-06-04 14:38:49,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3353, PETRI_PLACES=363, PETRI_TRANSITIONS=323} [2024-06-04 14:38:49,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-04 14:38:49,314 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 323 transitions, 3353 flow [2024-06-04 14:38:49,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:49,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:49,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:49,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 14:38:49,315 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)] === [2024-06-04 14:38:49,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash 593357301, now seen corresponding path program 9 times [2024-06-04 14:38:49,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:49,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050257011] [2024-06-04 14:38:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:49,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:51,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:51,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050257011] [2024-06-04 14:38:51,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050257011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:51,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:51,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:51,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598209775] [2024-06-04 14:38:51,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:51,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:51,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:51,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:51,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:51,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 323 transitions, 3353 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:51,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:51,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:51,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:51,791 INFO L124 PetriNetUnfolderBase]: 813/1531 cut-off events. [2024-06-04 14:38:51,791 INFO L125 PetriNetUnfolderBase]: For 137697/137697 co-relation queries the response was YES. [2024-06-04 14:38:51,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9322 conditions, 1531 events. 813/1531 cut-off events. For 137697/137697 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9025 event pairs, 136 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 9168. Up to 1356 conditions per place. [2024-06-04 14:38:51,808 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 291 selfloop transitions, 48 changer transitions 0/341 dead transitions. [2024-06-04 14:38:51,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 341 transitions, 4111 flow [2024-06-04 14:38:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:38:51,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 14:38:51,810 INFO L175 Difference]: Start difference. First operand has 363 places, 323 transitions, 3353 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:38:51,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 341 transitions, 4111 flow [2024-06-04 14:38:52,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 341 transitions, 4013 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 14:38:52,300 INFO L231 Difference]: Finished difference. Result has 361 places, 324 transitions, 3387 flow [2024-06-04 14:38:52,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3387, PETRI_PLACES=361, PETRI_TRANSITIONS=324} [2024-06-04 14:38:52,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-04 14:38:52,300 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 324 transitions, 3387 flow [2024-06-04 14:38:52,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:52,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:52,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:52,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 14:38:52,301 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)] === [2024-06-04 14:38:52,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1301294557, now seen corresponding path program 18 times [2024-06-04 14:38:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:52,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479233358] [2024-06-04 14:38:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:52,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:53,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:53,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479233358] [2024-06-04 14:38:53,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479233358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:53,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:53,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:53,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172135637] [2024-06-04 14:38:53,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:53,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:53,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:53,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:53,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:53,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 324 transitions, 3387 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:53,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:53,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:53,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:54,620 INFO L124 PetriNetUnfolderBase]: 854/1618 cut-off events. [2024-06-04 14:38:54,621 INFO L125 PetriNetUnfolderBase]: For 243415/243415 co-relation queries the response was YES. [2024-06-04 14:38:54,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10844 conditions, 1618 events. 854/1618 cut-off events. For 243415/243415 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9636 event pairs, 141 based on Foata normal form. 8/1625 useless extension candidates. Maximal degree in co-relation 10690. Up to 1128 conditions per place. [2024-06-04 14:38:54,640 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 85 changer transitions 10/352 dead transitions. [2024-06-04 14:38:54,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 352 transitions, 4459 flow [2024-06-04 14:38:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:54,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:38:54,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 14:38:54,641 INFO L175 Difference]: Start difference. First operand has 361 places, 324 transitions, 3387 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:38:54,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 352 transitions, 4459 flow [2024-06-04 14:38:55,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 352 transitions, 4337 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:38:55,252 INFO L231 Difference]: Finished difference. Result has 364 places, 321 transitions, 3419 flow [2024-06-04 14:38:55,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3419, PETRI_PLACES=364, PETRI_TRANSITIONS=321} [2024-06-04 14:38:55,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-04 14:38:55,252 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 321 transitions, 3419 flow [2024-06-04 14:38:55,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:55,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:55,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:55,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 14:38:55,253 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)] === [2024-06-04 14:38:55,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1301179237, now seen corresponding path program 19 times [2024-06-04 14:38:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:55,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809835324] [2024-06-04 14:38:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:56,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:56,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809835324] [2024-06-04 14:38:56,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809835324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:56,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:56,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:56,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876578313] [2024-06-04 14:38:56,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:56,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:56,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:38:56,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 321 transitions, 3419 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:56,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:56,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:38:56,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:57,515 INFO L124 PetriNetUnfolderBase]: 895/1705 cut-off events. [2024-06-04 14:38:57,515 INFO L125 PetriNetUnfolderBase]: For 368355/368355 co-relation queries the response was YES. [2024-06-04 14:38:57,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13419 conditions, 1705 events. 895/1705 cut-off events. For 368355/368355 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10260 event pairs, 176 based on Foata normal form. 8/1712 useless extension candidates. Maximal degree in co-relation 13264. Up to 1233 conditions per place. [2024-06-04 14:38:57,535 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 269 selfloop transitions, 68 changer transitions 9/348 dead transitions. [2024-06-04 14:38:57,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 348 transitions, 4513 flow [2024-06-04 14:38:57,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 14:38:57,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 14:38:57,537 INFO L175 Difference]: Start difference. First operand has 364 places, 321 transitions, 3419 flow. Second operand 11 states and 142 transitions. [2024-06-04 14:38:57,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 348 transitions, 4513 flow [2024-06-04 14:38:58,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 348 transitions, 4421 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 14:38:58,607 INFO L231 Difference]: Finished difference. Result has 362 places, 317 transitions, 3429 flow [2024-06-04 14:38:58,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3429, PETRI_PLACES=362, PETRI_TRANSITIONS=317} [2024-06-04 14:38:58,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-04 14:38:58,608 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 317 transitions, 3429 flow [2024-06-04 14:38:58,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:58,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:58,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:58,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 14:38:58,609 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)] === [2024-06-04 14:38:58,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash 593111347, now seen corresponding path program 20 times [2024-06-04 14:38:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478474240] [2024-06-04 14:38:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:00,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:00,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478474240] [2024-06-04 14:39:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478474240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:00,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:00,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:00,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750736864] [2024-06-04 14:39:00,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:00,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:00,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:00,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:00,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:00,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 317 transitions, 3429 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:00,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:00,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:00,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:01,302 INFO L124 PetriNetUnfolderBase]: 895/1713 cut-off events. [2024-06-04 14:39:01,302 INFO L125 PetriNetUnfolderBase]: For 406860/406860 co-relation queries the response was YES. [2024-06-04 14:39:01,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13427 conditions, 1713 events. 895/1713 cut-off events. For 406860/406860 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10400 event pairs, 198 based on Foata normal form. 16/1728 useless extension candidates. Maximal degree in co-relation 13287. Up to 1513 conditions per place. [2024-06-04 14:39:01,322 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 37 changer transitions 19/339 dead transitions. [2024-06-04 14:39:01,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 339 transitions, 4205 flow [2024-06-04 14:39:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:39:01,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:39:01,323 INFO L175 Difference]: Start difference. First operand has 362 places, 317 transitions, 3429 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:39:01,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 339 transitions, 4205 flow [2024-06-04 14:39:02,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 339 transitions, 4073 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:39:02,199 INFO L231 Difference]: Finished difference. Result has 361 places, 308 transitions, 3277 flow [2024-06-04 14:39:02,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3277, PETRI_PLACES=361, PETRI_TRANSITIONS=308} [2024-06-04 14:39:02,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-04 14:39:02,199 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 308 transitions, 3277 flow [2024-06-04 14:39:02,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:02,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:02,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:02,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 14:39:02,200 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)] === [2024-06-04 14:39:02,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1296526013, now seen corresponding path program 10 times [2024-06-04 14:39:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113949922] [2024-06-04 14:39:02,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:02,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:03,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:03,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113949922] [2024-06-04 14:39:03,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113949922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:03,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:03,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:39:03,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506641934] [2024-06-04 14:39:03,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:03,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:39:03,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:03,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:39:03,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:39:03,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:03,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 308 transitions, 3277 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:03,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:03,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:03,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:04,326 INFO L124 PetriNetUnfolderBase]: 838/1606 cut-off events. [2024-06-04 14:39:04,327 INFO L125 PetriNetUnfolderBase]: For 298646/298646 co-relation queries the response was YES. [2024-06-04 14:39:04,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12594 conditions, 1606 events. 838/1606 cut-off events. For 298646/298646 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9595 event pairs, 169 based on Foata normal form. 2/1607 useless extension candidates. Maximal degree in co-relation 12455. Up to 1418 conditions per place. [2024-06-04 14:39:04,344 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 260 selfloop transitions, 64 changer transitions 0/326 dead transitions. [2024-06-04 14:39:04,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 326 transitions, 4011 flow [2024-06-04 14:39:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:39:04,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 14:39:04,345 INFO L175 Difference]: Start difference. First operand has 361 places, 308 transitions, 3277 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:39:04,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 326 transitions, 4011 flow [2024-06-04 14:39:05,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 326 transitions, 3925 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:39:05,205 INFO L231 Difference]: Finished difference. Result has 354 places, 309 transitions, 3358 flow [2024-06-04 14:39:05,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3358, PETRI_PLACES=354, PETRI_TRANSITIONS=309} [2024-06-04 14:39:05,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-04 14:39:05,206 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 309 transitions, 3358 flow [2024-06-04 14:39:05,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:05,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:05,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:05,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 14:39:05,207 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)] === [2024-06-04 14:39:05,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:05,207 INFO L85 PathProgramCache]: Analyzing trace with hash 586855237, now seen corresponding path program 21 times [2024-06-04 14:39:05,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:05,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576921446] [2024-06-04 14:39:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:05,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:06,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:06,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576921446] [2024-06-04 14:39:06,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576921446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:06,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:06,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:06,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795420132] [2024-06-04 14:39:06,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:06,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:06,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:06,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:06,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:06,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 309 transitions, 3358 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:06,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:06,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:06,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:07,506 INFO L124 PetriNetUnfolderBase]: 862/1662 cut-off events. [2024-06-04 14:39:07,506 INFO L125 PetriNetUnfolderBase]: For 366707/366707 co-relation queries the response was YES. [2024-06-04 14:39:07,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12743 conditions, 1662 events. 862/1662 cut-off events. For 366707/366707 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10075 event pairs, 195 based on Foata normal form. 16/1677 useless extension candidates. Maximal degree in co-relation 12607. Up to 1478 conditions per place. [2024-06-04 14:39:07,526 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 31 changer transitions 19/331 dead transitions. [2024-06-04 14:39:07,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 331 transitions, 4118 flow [2024-06-04 14:39:07,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:07,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 14:39:07,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 14:39:07,528 INFO L175 Difference]: Start difference. First operand has 354 places, 309 transitions, 3358 flow. Second operand 12 states and 140 transitions. [2024-06-04 14:39:07,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 331 transitions, 4118 flow [2024-06-04 14:39:08,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 331 transitions, 3967 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 14:39:08,511 INFO L231 Difference]: Finished difference. Result has 358 places, 300 transitions, 3171 flow [2024-06-04 14:39:08,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3207, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3171, PETRI_PLACES=358, PETRI_TRANSITIONS=300} [2024-06-04 14:39:08,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-04 14:39:08,512 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 300 transitions, 3171 flow [2024-06-04 14:39:08,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:08,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:08,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:08,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 14:39:08,513 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)] === [2024-06-04 14:39:08,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:08,513 INFO L85 PathProgramCache]: Analyzing trace with hash 716943031, now seen corresponding path program 22 times [2024-06-04 14:39:08,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:08,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239890503] [2024-06-04 14:39:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:08,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:09,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:09,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239890503] [2024-06-04 14:39:09,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239890503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:09,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:09,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:39:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320893968] [2024-06-04 14:39:09,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:09,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:39:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:39:09,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:39:10,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:10,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 300 transitions, 3171 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:10,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:10,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:10,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:10,635 INFO L124 PetriNetUnfolderBase]: 824/1592 cut-off events. [2024-06-04 14:39:10,635 INFO L125 PetriNetUnfolderBase]: For 325067/325067 co-relation queries the response was YES. [2024-06-04 14:39:10,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12330 conditions, 1592 events. 824/1592 cut-off events. For 325067/325067 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9562 event pairs, 185 based on Foata normal form. 8/1599 useless extension candidates. Maximal degree in co-relation 12193. Up to 1463 conditions per place. [2024-06-04 14:39:10,653 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 27 changer transitions 14/319 dead transitions. [2024-06-04 14:39:10,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 319 transitions, 3881 flow [2024-06-04 14:39:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:39:10,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 14:39:10,654 INFO L175 Difference]: Start difference. First operand has 358 places, 300 transitions, 3171 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:39:10,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 319 transitions, 3881 flow [2024-06-04 14:39:11,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 319 transitions, 3806 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-04 14:39:11,444 INFO L231 Difference]: Finished difference. Result has 350 places, 294 transitions, 3081 flow [2024-06-04 14:39:11,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3081, PETRI_PLACES=350, PETRI_TRANSITIONS=294} [2024-06-04 14:39:11,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-04 14:39:11,444 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 294 transitions, 3081 flow [2024-06-04 14:39:11,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:11,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:11,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:11,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 14:39:11,445 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)] === [2024-06-04 14:39:11,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1296705937, now seen corresponding path program 23 times [2024-06-04 14:39:11,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959739586] [2024-06-04 14:39:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:11,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:12,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:12,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959739586] [2024-06-04 14:39:12,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959739586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:12,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:12,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:12,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131167850] [2024-06-04 14:39:12,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:12,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:12,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:13,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:13,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 294 transitions, 3081 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:13,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:13,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:13,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:13,588 INFO L124 PetriNetUnfolderBase]: 823/1589 cut-off events. [2024-06-04 14:39:13,589 INFO L125 PetriNetUnfolderBase]: For 320032/320032 co-relation queries the response was YES. [2024-06-04 14:39:13,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12163 conditions, 1589 events. 823/1589 cut-off events. For 320032/320032 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9531 event pairs, 173 based on Foata normal form. 10/1598 useless extension candidates. Maximal degree in co-relation 12029. Up to 1358 conditions per place. [2024-06-04 14:39:13,609 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 55 changer transitions 13/320 dead transitions. [2024-06-04 14:39:13,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 320 transitions, 3851 flow [2024-06-04 14:39:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 14:39:13,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 14:39:13,610 INFO L175 Difference]: Start difference. First operand has 350 places, 294 transitions, 3081 flow. Second operand 12 states and 147 transitions. [2024-06-04 14:39:13,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 320 transitions, 3851 flow [2024-06-04 14:39:14,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 320 transitions, 3785 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:14,584 INFO L231 Difference]: Finished difference. Result has 346 places, 291 transitions, 3096 flow [2024-06-04 14:39:14,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3096, PETRI_PLACES=346, PETRI_TRANSITIONS=291} [2024-06-04 14:39:14,585 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-04 14:39:14,585 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 291 transitions, 3096 flow [2024-06-04 14:39:14,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:14,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:14,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:14,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 14:39:14,585 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)] === [2024-06-04 14:39:14,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:14,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1166267533, now seen corresponding path program 24 times [2024-06-04 14:39:14,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:14,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583350500] [2024-06-04 14:39:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:14,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:16,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:16,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583350500] [2024-06-04 14:39:16,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583350500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:16,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:16,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:16,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581589492] [2024-06-04 14:39:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:16,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:16,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:16,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:16,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:16,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:16,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 291 transitions, 3096 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:16,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:16,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:16,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:17,559 INFO L124 PetriNetUnfolderBase]: 812/1572 cut-off events. [2024-06-04 14:39:17,560 INFO L125 PetriNetUnfolderBase]: For 302907/302907 co-relation queries the response was YES. [2024-06-04 14:39:17,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12005 conditions, 1572 events. 812/1572 cut-off events. For 302907/302907 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9425 event pairs, 168 based on Foata normal form. 10/1581 useless extension candidates. Maximal degree in co-relation 11873. Up to 1329 conditions per place. [2024-06-04 14:39:17,574 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 245 selfloop transitions, 55 changer transitions 12/314 dead transitions. [2024-06-04 14:39:17,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 314 transitions, 3828 flow [2024-06-04 14:39:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:39:17,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 14:39:17,575 INFO L175 Difference]: Start difference. First operand has 346 places, 291 transitions, 3096 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:39:17,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 314 transitions, 3828 flow [2024-06-04 14:39:18,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 314 transitions, 3693 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 14:39:18,351 INFO L231 Difference]: Finished difference. Result has 342 places, 285 transitions, 3007 flow [2024-06-04 14:39:18,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2961, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3007, PETRI_PLACES=342, PETRI_TRANSITIONS=285} [2024-06-04 14:39:18,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-04 14:39:18,351 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 285 transitions, 3007 flow [2024-06-04 14:39:18,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:18,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:18,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:18,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 14:39:18,352 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)] === [2024-06-04 14:39:18,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:18,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1000026809, now seen corresponding path program 11 times [2024-06-04 14:39:18,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:18,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048435336] [2024-06-04 14:39:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:18,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:20,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:20,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048435336] [2024-06-04 14:39:20,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048435336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:20,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:20,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:20,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239577025] [2024-06-04 14:39:20,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:20,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:20,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:20,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:20,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 285 transitions, 3007 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:20,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:20,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:20,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:20,900 INFO L124 PetriNetUnfolderBase]: 780/1516 cut-off events. [2024-06-04 14:39:20,900 INFO L125 PetriNetUnfolderBase]: For 258685/258685 co-relation queries the response was YES. [2024-06-04 14:39:20,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11727 conditions, 1516 events. 780/1516 cut-off events. For 258685/258685 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9031 event pairs, 166 based on Foata normal form. 2/1517 useless extension candidates. Maximal degree in co-relation 11597. Up to 1337 conditions per place. [2024-06-04 14:39:20,918 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 247 selfloop transitions, 55 changer transitions 0/304 dead transitions. [2024-06-04 14:39:20,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 304 transitions, 3699 flow [2024-06-04 14:39:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:39:20,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:39:20,919 INFO L175 Difference]: Start difference. First operand has 342 places, 285 transitions, 3007 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:39:20,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 304 transitions, 3699 flow [2024-06-04 14:39:21,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 304 transitions, 3584 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:21,743 INFO L231 Difference]: Finished difference. Result has 339 places, 286 transitions, 3037 flow [2024-06-04 14:39:21,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3037, PETRI_PLACES=339, PETRI_TRANSITIONS=286} [2024-06-04 14:39:21,743 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-04 14:39:21,743 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 286 transitions, 3037 flow [2024-06-04 14:39:21,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:21,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:21,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:21,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 14:39:21,744 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)] === [2024-06-04 14:39:21,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1781050249, now seen corresponding path program 12 times [2024-06-04 14:39:21,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:21,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521206743] [2024-06-04 14:39:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:21,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:24,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:24,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521206743] [2024-06-04 14:39:24,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521206743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:24,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:24,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:24,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735605454] [2024-06-04 14:39:24,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:24,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:24,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:24,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:24,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:24,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 286 transitions, 3037 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:24,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:24,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:24,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:24,756 INFO L124 PetriNetUnfolderBase]: 784/1524 cut-off events. [2024-06-04 14:39:24,757 INFO L125 PetriNetUnfolderBase]: For 259227/259227 co-relation queries the response was YES. [2024-06-04 14:39:24,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 1524 events. 784/1524 cut-off events. For 259227/259227 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9118 event pairs, 175 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 11675. Up to 1354 conditions per place. [2024-06-04 14:39:24,770 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 54 changer transitions 0/304 dead transitions. [2024-06-04 14:39:24,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 304 transitions, 3725 flow [2024-06-04 14:39:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 14:39:24,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:39:24,772 INFO L175 Difference]: Start difference. First operand has 339 places, 286 transitions, 3037 flow. Second operand 11 states and 132 transitions. [2024-06-04 14:39:24,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 304 transitions, 3725 flow [2024-06-04 14:39:25,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 304 transitions, 3562 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-04 14:39:25,564 INFO L231 Difference]: Finished difference. Result has 340 places, 287 transitions, 3019 flow [2024-06-04 14:39:25,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3019, PETRI_PLACES=340, PETRI_TRANSITIONS=287} [2024-06-04 14:39:25,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 14:39:25,565 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 287 transitions, 3019 flow [2024-06-04 14:39:25,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:25,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:25,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:25,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 14:39:25,565 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)] === [2024-06-04 14:39:25,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1774378925, now seen corresponding path program 25 times [2024-06-04 14:39:25,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:25,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995966150] [2024-06-04 14:39:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:25,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:26,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:26,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995966150] [2024-06-04 14:39:26,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995966150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:26,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:26,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:26,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339864295] [2024-06-04 14:39:26,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:26,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:26,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:26,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:26,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:27,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:27,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 287 transitions, 3019 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:27,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:27,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:27,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:27,833 INFO L124 PetriNetUnfolderBase]: 796/1552 cut-off events. [2024-06-04 14:39:27,833 INFO L125 PetriNetUnfolderBase]: For 297019/297019 co-relation queries the response was YES. [2024-06-04 14:39:27,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11892 conditions, 1552 events. 796/1552 cut-off events. For 297019/297019 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9318 event pairs, 163 based on Foata normal form. 8/1559 useless extension candidates. Maximal degree in co-relation 11761. Up to 1225 conditions per place. [2024-06-04 14:39:27,848 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 61 changer transitions 7/315 dead transitions. [2024-06-04 14:39:27,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 315 transitions, 4003 flow [2024-06-04 14:39:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 14:39:27,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 14:39:27,849 INFO L175 Difference]: Start difference. First operand has 340 places, 287 transitions, 3019 flow. Second operand 12 states and 152 transitions. [2024-06-04 14:39:27,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 315 transitions, 4003 flow [2024-06-04 14:39:28,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 315 transitions, 3870 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:39:28,594 INFO L231 Difference]: Finished difference. Result has 343 places, 285 transitions, 2995 flow [2024-06-04 14:39:28,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2995, PETRI_PLACES=343, PETRI_TRANSITIONS=285} [2024-06-04 14:39:28,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 14:39:28,595 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 285 transitions, 2995 flow [2024-06-04 14:39:28,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:28,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:28,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:28,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 14:39:28,595 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)] === [2024-06-04 14:39:28,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:28,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1170909163, now seen corresponding path program 26 times [2024-06-04 14:39:28,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:28,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796254851] [2024-06-04 14:39:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:28,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:30,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:30,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796254851] [2024-06-04 14:39:30,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796254851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:30,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:30,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802571400] [2024-06-04 14:39:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:30,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:30,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:30,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 285 transitions, 2995 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:30,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:30,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:30,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:30,729 INFO L124 PetriNetUnfolderBase]: 765/1491 cut-off events. [2024-06-04 14:39:30,729 INFO L125 PetriNetUnfolderBase]: For 256821/256821 co-relation queries the response was YES. [2024-06-04 14:39:30,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10599 conditions, 1491 events. 765/1491 cut-off events. For 256821/256821 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8904 event pairs, 164 based on Foata normal form. 10/1500 useless extension candidates. Maximal degree in co-relation 10467. Up to 1230 conditions per place. [2024-06-04 14:39:30,748 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 244 selfloop transitions, 50 changer transitions 10/306 dead transitions. [2024-06-04 14:39:30,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 306 transitions, 3703 flow [2024-06-04 14:39:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:39:30,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:39:30,749 INFO L175 Difference]: Start difference. First operand has 343 places, 285 transitions, 2995 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:39:30,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 306 transitions, 3703 flow [2024-06-04 14:39:31,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 306 transitions, 3595 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:39:31,340 INFO L231 Difference]: Finished difference. Result has 342 places, 279 transitions, 2933 flow [2024-06-04 14:39:31,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2933, PETRI_PLACES=342, PETRI_TRANSITIONS=279} [2024-06-04 14:39:31,340 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-04 14:39:31,341 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 279 transitions, 2933 flow [2024-06-04 14:39:31,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:31,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:31,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:31,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 14:39:31,341 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)] === [2024-06-04 14:39:31,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash -993531689, now seen corresponding path program 13 times [2024-06-04 14:39:31,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:31,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255482149] [2024-06-04 14:39:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:31,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:32,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:32,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255482149] [2024-06-04 14:39:32,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255482149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:32,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:32,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:32,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462237267] [2024-06-04 14:39:32,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:32,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:32,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:32,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:32,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 279 transitions, 2933 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:32,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:32,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:32,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:33,265 INFO L124 PetriNetUnfolderBase]: 770/1502 cut-off events. [2024-06-04 14:39:33,265 INFO L125 PetriNetUnfolderBase]: For 263769/263769 co-relation queries the response was YES. [2024-06-04 14:39:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11698 conditions, 1502 events. 770/1502 cut-off events. For 263769/263769 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8963 event pairs, 169 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 11567. Up to 1200 conditions per place. [2024-06-04 14:39:33,282 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 59 changer transitions 0/303 dead transitions. [2024-06-04 14:39:33,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 303 transitions, 3885 flow [2024-06-04 14:39:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 14:39:33,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 14:39:33,283 INFO L175 Difference]: Start difference. First operand has 342 places, 279 transitions, 2933 flow. Second operand 11 states and 140 transitions. [2024-06-04 14:39:33,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 303 transitions, 3885 flow [2024-06-04 14:39:34,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 303 transitions, 3688 flow, removed 5 selfloop flow, removed 19 redundant places. [2024-06-04 14:39:34,129 INFO L231 Difference]: Finished difference. Result has 334 places, 280 transitions, 2894 flow [2024-06-04 14:39:34,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2894, PETRI_PLACES=334, PETRI_TRANSITIONS=280} [2024-06-04 14:39:34,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-04 14:39:34,129 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 280 transitions, 2894 flow [2024-06-04 14:39:34,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:34,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:34,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:34,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 14:39:34,130 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)] === [2024-06-04 14:39:34,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:34,130 INFO L85 PathProgramCache]: Analyzing trace with hash -993777643, now seen corresponding path program 27 times [2024-06-04 14:39:34,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:34,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405683306] [2024-06-04 14:39:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:34,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:35,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:35,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405683306] [2024-06-04 14:39:35,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405683306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:35,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:35,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:35,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357913380] [2024-06-04 14:39:35,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:35,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:35,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:35,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:35,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 280 transitions, 2894 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:35,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:35,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:35,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:36,433 INFO L124 PetriNetUnfolderBase]: 786/1538 cut-off events. [2024-06-04 14:39:36,433 INFO L125 PetriNetUnfolderBase]: For 308727/308727 co-relation queries the response was YES. [2024-06-04 14:39:36,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11765 conditions, 1538 events. 786/1538 cut-off events. For 308727/308727 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9252 event pairs, 175 based on Foata normal form. 10/1547 useless extension candidates. Maximal degree in co-relation 11635. Up to 1291 conditions per place. [2024-06-04 14:39:36,450 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 51 changer transitions 8/301 dead transitions. [2024-06-04 14:39:36,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 301 transitions, 3592 flow [2024-06-04 14:39:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:39:36,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:39:36,452 INFO L175 Difference]: Start difference. First operand has 334 places, 280 transitions, 2894 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:39:36,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 301 transitions, 3592 flow [2024-06-04 14:39:37,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 301 transitions, 3448 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:39:37,168 INFO L231 Difference]: Finished difference. Result has 336 places, 276 transitions, 2816 flow [2024-06-04 14:39:37,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2816, PETRI_PLACES=336, PETRI_TRANSITIONS=276} [2024-06-04 14:39:37,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 14:39:37,169 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 276 transitions, 2816 flow [2024-06-04 14:39:37,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:37,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:37,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:37,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 14:39:37,169 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)] === [2024-06-04 14:39:37,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1000033753, now seen corresponding path program 28 times [2024-06-04 14:39:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:37,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480403828] [2024-06-04 14:39:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:40,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480403828] [2024-06-04 14:39:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480403828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:40,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:40,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790983313] [2024-06-04 14:39:40,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:40,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:40,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:40,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:40,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 276 transitions, 2816 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:40,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:40,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:40,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:41,362 INFO L124 PetriNetUnfolderBase]: 743/1461 cut-off events. [2024-06-04 14:39:41,362 INFO L125 PetriNetUnfolderBase]: For 256301/256301 co-relation queries the response was YES. [2024-06-04 14:39:41,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10306 conditions, 1461 events. 743/1461 cut-off events. For 256301/256301 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8770 event pairs, 149 based on Foata normal form. 10/1470 useless extension candidates. Maximal degree in co-relation 10175. Up to 1236 conditions per place. [2024-06-04 14:39:41,378 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 238 selfloop transitions, 48 changer transitions 12/300 dead transitions. [2024-06-04 14:39:41,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 300 transitions, 3526 flow [2024-06-04 14:39:41,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 14:39:41,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 14:39:41,379 INFO L175 Difference]: Start difference. First operand has 336 places, 276 transitions, 2816 flow. Second operand 12 states and 146 transitions. [2024-06-04 14:39:41,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 300 transitions, 3526 flow [2024-06-04 14:39:41,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 300 transitions, 3417 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:39:41,867 INFO L231 Difference]: Finished difference. Result has 335 places, 272 transitions, 2762 flow [2024-06-04 14:39:41,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2762, PETRI_PLACES=335, PETRI_TRANSITIONS=272} [2024-06-04 14:39:41,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-04 14:39:41,868 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 272 transitions, 2762 flow [2024-06-04 14:39:41,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:41,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:41,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:41,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 14:39:41,869 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)] === [2024-06-04 14:39:41,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:41,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1000206733, now seen corresponding path program 29 times [2024-06-04 14:39:41,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:41,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57443299] [2024-06-04 14:39:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:43,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:43,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57443299] [2024-06-04 14:39:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57443299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:43,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:43,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:39:43,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756535274] [2024-06-04 14:39:43,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:43,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:39:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:39:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:39:43,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:43,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 272 transitions, 2762 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:43,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:43,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:43,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:43,789 INFO L124 PetriNetUnfolderBase]: 700/1384 cut-off events. [2024-06-04 14:39:43,790 INFO L125 PetriNetUnfolderBase]: For 195234/195234 co-relation queries the response was YES. [2024-06-04 14:39:43,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8841 conditions, 1384 events. 700/1384 cut-off events. For 195234/195234 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8255 event pairs, 143 based on Foata normal form. 10/1393 useless extension candidates. Maximal degree in co-relation 8711. Up to 1161 conditions per place. [2024-06-04 14:39:43,804 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 44 changer transitions 9/294 dead transitions. [2024-06-04 14:39:43,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 294 transitions, 3452 flow [2024-06-04 14:39:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:39:43,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:39:43,805 INFO L175 Difference]: Start difference. First operand has 335 places, 272 transitions, 2762 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:39:43,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 294 transitions, 3452 flow [2024-06-04 14:39:44,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 294 transitions, 3352 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:44,336 INFO L231 Difference]: Finished difference. Result has 332 places, 267 transitions, 2710 flow [2024-06-04 14:39:44,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2710, PETRI_PLACES=332, PETRI_TRANSITIONS=267} [2024-06-04 14:39:44,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-04 14:39:44,337 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 267 transitions, 2710 flow [2024-06-04 14:39:44,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:44,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:44,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:44,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 14:39:44,337 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)] === [2024-06-04 14:39:44,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:44,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1885460183, now seen corresponding path program 14 times [2024-06-04 14:39:44,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:44,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131904854] [2024-06-04 14:39:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:44,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:45,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:45,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131904854] [2024-06-04 14:39:45,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131904854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:45,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:45,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:45,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447564289] [2024-06-04 14:39:45,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:45,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:45,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 267 transitions, 2710 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:45,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:45,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:45,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:45,837 INFO L124 PetriNetUnfolderBase]: 685/1359 cut-off events. [2024-06-04 14:39:45,838 INFO L125 PetriNetUnfolderBase]: For 178810/178810 co-relation queries the response was YES. [2024-06-04 14:39:45,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8712 conditions, 1359 events. 685/1359 cut-off events. For 178810/178810 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8056 event pairs, 178 based on Foata normal form. 8/1366 useless extension candidates. Maximal degree in co-relation 8583. Up to 1281 conditions per place. [2024-06-04 14:39:45,853 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 256 selfloop transitions, 11 changer transitions 15/284 dead transitions. [2024-06-04 14:39:45,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 284 transitions, 3352 flow [2024-06-04 14:39:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-04 14:39:45,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-04 14:39:45,854 INFO L175 Difference]: Start difference. First operand has 332 places, 267 transitions, 2710 flow. Second operand 11 states and 117 transitions. [2024-06-04 14:39:45,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 284 transitions, 3352 flow [2024-06-04 14:39:46,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 284 transitions, 3255 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 14:39:46,374 INFO L231 Difference]: Finished difference. Result has 327 places, 263 transitions, 2619 flow [2024-06-04 14:39:46,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2619, PETRI_PLACES=327, PETRI_TRANSITIONS=263} [2024-06-04 14:39:46,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-04 14:39:46,374 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 263 transitions, 2619 flow [2024-06-04 14:39:46,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:46,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:46,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:46,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 14:39:46,375 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)] === [2024-06-04 14:39:46,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1749740881, now seen corresponding path program 15 times [2024-06-04 14:39:46,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:46,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882601018] [2024-06-04 14:39:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:46,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:47,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:47,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882601018] [2024-06-04 14:39:47,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882601018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:47,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:47,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:47,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960707232] [2024-06-04 14:39:47,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:47,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:47,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:47,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:47,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:47,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:47,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 263 transitions, 2619 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:47,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:47,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:47,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:48,040 INFO L124 PetriNetUnfolderBase]: 679/1349 cut-off events. [2024-06-04 14:39:48,040 INFO L125 PetriNetUnfolderBase]: For 203005/203005 co-relation queries the response was YES. [2024-06-04 14:39:48,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 1349 events. 679/1349 cut-off events. For 203005/203005 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7980 event pairs, 182 based on Foata normal form. 12/1360 useless extension candidates. Maximal degree in co-relation 8513. Up to 1225 conditions per place. [2024-06-04 14:39:48,054 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 244 selfloop transitions, 17 changer transitions 19/282 dead transitions. [2024-06-04 14:39:48,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 282 transitions, 3299 flow [2024-06-04 14:39:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:39:48,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 14:39:48,055 INFO L175 Difference]: Start difference. First operand has 327 places, 263 transitions, 2619 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:39:48,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 282 transitions, 3299 flow [2024-06-04 14:39:48,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 282 transitions, 3269 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:39:48,554 INFO L231 Difference]: Finished difference. Result has 321 places, 253 transitions, 2529 flow [2024-06-04 14:39:48,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2589, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2529, PETRI_PLACES=321, PETRI_TRANSITIONS=253} [2024-06-04 14:39:48,554 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-04 14:39:48,554 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 253 transitions, 2529 flow [2024-06-04 14:39:48,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:48,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:48,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:48,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 14:39:48,555 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)] === [2024-06-04 14:39:48,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:48,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2133441095, now seen corresponding path program 16 times [2024-06-04 14:39:48,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:48,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742265682] [2024-06-04 14:39:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:48,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:50,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:50,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742265682] [2024-06-04 14:39:50,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742265682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:50,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:50,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:50,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924095888] [2024-06-04 14:39:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:50,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:50,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:50,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:50,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:50,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 253 transitions, 2529 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:50,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:50,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:50,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:50,814 INFO L124 PetriNetUnfolderBase]: 639/1277 cut-off events. [2024-06-04 14:39:50,814 INFO L125 PetriNetUnfolderBase]: For 139508/139508 co-relation queries the response was YES. [2024-06-04 14:39:50,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8255 conditions, 1277 events. 639/1277 cut-off events. For 139508/139508 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7505 event pairs, 172 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 8129. Up to 1198 conditions per place. [2024-06-04 14:39:50,829 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 27 changer transitions 0/271 dead transitions. [2024-06-04 14:39:50,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 271 transitions, 3155 flow [2024-06-04 14:39:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:39:50,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 14:39:50,831 INFO L175 Difference]: Start difference. First operand has 321 places, 253 transitions, 2529 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:39:50,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 271 transitions, 3155 flow [2024-06-04 14:39:51,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 271 transitions, 2981 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-04 14:39:51,448 INFO L231 Difference]: Finished difference. Result has 315 places, 254 transitions, 2447 flow [2024-06-04 14:39:51,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2447, PETRI_PLACES=315, PETRI_TRANSITIONS=254} [2024-06-04 14:39:51,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-04 14:39:51,448 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 254 transitions, 2447 flow [2024-06-04 14:39:51,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:51,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:51,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:51,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 14:39:51,449 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)] === [2024-06-04 14:39:51,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1472692951, now seen corresponding path program 17 times [2024-06-04 14:39:51,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552832650] [2024-06-04 14:39:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:52,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:52,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552832650] [2024-06-04 14:39:52,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552832650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:52,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:52,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:52,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588670900] [2024-06-04 14:39:52,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:52,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:52,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:52,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:52,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:53,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:53,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 254 transitions, 2447 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:53,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:53,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:53,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:53,436 INFO L124 PetriNetUnfolderBase]: 643/1285 cut-off events. [2024-06-04 14:39:53,436 INFO L125 PetriNetUnfolderBase]: For 139493/139493 co-relation queries the response was YES. [2024-06-04 14:39:53,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8237 conditions, 1285 events. 643/1285 cut-off events. For 139493/139493 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7588 event pairs, 178 based on Foata normal form. 2/1286 useless extension candidates. Maximal degree in co-relation 8113. Up to 1225 conditions per place. [2024-06-04 14:39:53,450 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 19 changer transitions 0/269 dead transitions. [2024-06-04 14:39:53,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 269 transitions, 3053 flow [2024-06-04 14:39:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:39:53,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 14:39:53,451 INFO L175 Difference]: Start difference. First operand has 315 places, 254 transitions, 2447 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:39:53,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 269 transitions, 3053 flow [2024-06-04 14:39:54,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 269 transitions, 2968 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:39:54,033 INFO L231 Difference]: Finished difference. Result has 317 places, 255 transitions, 2440 flow [2024-06-04 14:39:54,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2440, PETRI_PLACES=317, PETRI_TRANSITIONS=255} [2024-06-04 14:39:54,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2024-06-04 14:39:54,034 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 255 transitions, 2440 flow [2024-06-04 14:39:54,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:54,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:54,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:54,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 14:39:54,034 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)] === [2024-06-04 14:39:54,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash -414469499, now seen corresponding path program 30 times [2024-06-04 14:39:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222680633] [2024-06-04 14:39:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:55,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:55,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222680633] [2024-06-04 14:39:55,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222680633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:55,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:55,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:55,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875458328] [2024-06-04 14:39:55,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:55,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:55,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:55,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 255 transitions, 2440 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:55,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:55,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:55,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:56,197 INFO L124 PetriNetUnfolderBase]: 668/1336 cut-off events. [2024-06-04 14:39:56,198 INFO L125 PetriNetUnfolderBase]: For 184244/184244 co-relation queries the response was YES. [2024-06-04 14:39:56,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1336 events. 668/1336 cut-off events. For 184244/184244 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7927 event pairs, 148 based on Foata normal form. 10/1345 useless extension candidates. Maximal degree in co-relation 8273. Up to 1002 conditions per place. [2024-06-04 14:39:56,211 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 83 changer transitions 11/281 dead transitions. [2024-06-04 14:39:56,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 281 transitions, 3134 flow [2024-06-04 14:39:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:39:56,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:39:56,212 INFO L175 Difference]: Start difference. First operand has 317 places, 255 transitions, 2440 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:39:56,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 281 transitions, 3134 flow [2024-06-04 14:39:56,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 281 transitions, 3066 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 14:39:56,737 INFO L231 Difference]: Finished difference. Result has 321 places, 256 transitions, 2553 flow [2024-06-04 14:39:56,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2553, PETRI_PLACES=321, PETRI_TRANSITIONS=256} [2024-06-04 14:39:56,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-04 14:39:56,738 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 256 transitions, 2553 flow [2024-06-04 14:39:56,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:56,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:56,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:56,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 14:39:56,738 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)] === [2024-06-04 14:39:56,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1925350841, now seen corresponding path program 18 times [2024-06-04 14:39:56,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:56,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979528330] [2024-06-04 14:39:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:56,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:58,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979528330] [2024-06-04 14:39:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979528330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:58,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:58,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042832569] [2024-06-04 14:39:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:58,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:58,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:58,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:39:58,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 256 transitions, 2553 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:58,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:58,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:39:58,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:59,193 INFO L124 PetriNetUnfolderBase]: 648/1296 cut-off events. [2024-06-04 14:39:59,194 INFO L125 PetriNetUnfolderBase]: For 144747/144747 co-relation queries the response was YES. [2024-06-04 14:39:59,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8444 conditions, 1296 events. 648/1296 cut-off events. For 144747/144747 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7677 event pairs, 174 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 8317. Up to 1232 conditions per place. [2024-06-04 14:39:59,207 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 248 selfloop transitions, 22 changer transitions 1/273 dead transitions. [2024-06-04 14:39:59,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 273 transitions, 3190 flow [2024-06-04 14:39:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:39:59,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:39:59,208 INFO L175 Difference]: Start difference. First operand has 321 places, 256 transitions, 2553 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:39:59,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 273 transitions, 3190 flow [2024-06-04 14:39:59,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 273 transitions, 3090 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:39:59,746 INFO L231 Difference]: Finished difference. Result has 324 places, 257 transitions, 2545 flow [2024-06-04 14:39:59,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2545, PETRI_PLACES=324, PETRI_TRANSITIONS=257} [2024-06-04 14:39:59,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-04 14:39:59,747 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 257 transitions, 2545 flow [2024-06-04 14:39:59,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:59,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:59,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:59,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 14:39:59,747 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)] === [2024-06-04 14:39:59,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:59,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1925342471, now seen corresponding path program 19 times [2024-06-04 14:39:59,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:59,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778049265] [2024-06-04 14:39:59,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:59,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:01,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:01,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778049265] [2024-06-04 14:40:01,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778049265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:01,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:01,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:01,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605722631] [2024-06-04 14:40:01,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:01,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:01,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 257 transitions, 2545 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:01,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:01,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:01,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:01,830 INFO L124 PetriNetUnfolderBase]: 632/1264 cut-off events. [2024-06-04 14:40:01,830 INFO L125 PetriNetUnfolderBase]: For 144960/144960 co-relation queries the response was YES. [2024-06-04 14:40:01,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8257 conditions, 1264 events. 632/1264 cut-off events. For 144960/144960 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7444 event pairs, 174 based on Foata normal form. 2/1265 useless extension candidates. Maximal degree in co-relation 8129. Up to 1193 conditions per place. [2024-06-04 14:40:01,844 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 250 selfloop transitions, 20 changer transitions 0/272 dead transitions. [2024-06-04 14:40:01,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 272 transitions, 3159 flow [2024-06-04 14:40:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:01,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:01,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-04 14:40:01,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-04 14:40:01,846 INFO L175 Difference]: Start difference. First operand has 324 places, 257 transitions, 2545 flow. Second operand 11 states and 118 transitions. [2024-06-04 14:40:01,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 272 transitions, 3159 flow [2024-06-04 14:40:02,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 272 transitions, 3085 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:02,460 INFO L231 Difference]: Finished difference. Result has 327 places, 258 transitions, 2555 flow [2024-06-04 14:40:02,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2555, PETRI_PLACES=327, PETRI_TRANSITIONS=258} [2024-06-04 14:40:02,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-04 14:40:02,460 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 258 transitions, 2555 flow [2024-06-04 14:40:02,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:02,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:02,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:02,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 14:40:02,461 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)] === [2024-06-04 14:40:02,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1687244507, now seen corresponding path program 20 times [2024-06-04 14:40:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:02,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914428800] [2024-06-04 14:40:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:03,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:03,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914428800] [2024-06-04 14:40:03,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914428800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:03,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:03,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183390783] [2024-06-04 14:40:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:03,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:03,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:03,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:03,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 258 transitions, 2555 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:03,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:03,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:03,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:04,120 INFO L124 PetriNetUnfolderBase]: 636/1272 cut-off events. [2024-06-04 14:40:04,121 INFO L125 PetriNetUnfolderBase]: For 147962/147962 co-relation queries the response was YES. [2024-06-04 14:40:04,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8316 conditions, 1272 events. 636/1272 cut-off events. For 147962/147962 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7537 event pairs, 170 based on Foata normal form. 2/1273 useless extension candidates. Maximal degree in co-relation 8187. Up to 1215 conditions per place. [2024-06-04 14:40:04,131 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 253 selfloop transitions, 18 changer transitions 0/273 dead transitions. [2024-06-04 14:40:04,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 273 transitions, 3171 flow [2024-06-04 14:40:04,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 14:40:04,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 14:40:04,132 INFO L175 Difference]: Start difference. First operand has 327 places, 258 transitions, 2555 flow. Second operand 11 states and 115 transitions. [2024-06-04 14:40:04,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 273 transitions, 3171 flow [2024-06-04 14:40:04,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 273 transitions, 3097 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:04,726 INFO L231 Difference]: Finished difference. Result has 329 places, 259 transitions, 2563 flow [2024-06-04 14:40:04,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2563, PETRI_PLACES=329, PETRI_TRANSITIONS=259} [2024-06-04 14:40:04,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-04 14:40:04,727 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 259 transitions, 2563 flow [2024-06-04 14:40:04,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:04,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:04,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:04,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 14:40:04,727 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)] === [2024-06-04 14:40:04,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash 822747533, now seen corresponding path program 31 times [2024-06-04 14:40:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:04,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990525269] [2024-06-04 14:40:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:06,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:06,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990525269] [2024-06-04 14:40:06,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990525269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:06,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:06,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:06,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733608152] [2024-06-04 14:40:06,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:06,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:06,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:06,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:06,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:06,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:06,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 259 transitions, 2563 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:06,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:06,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:06,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:06,829 INFO L124 PetriNetUnfolderBase]: 652/1308 cut-off events. [2024-06-04 14:40:06,829 INFO L125 PetriNetUnfolderBase]: For 183565/183565 co-relation queries the response was YES. [2024-06-04 14:40:06,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8407 conditions, 1308 events. 652/1308 cut-off events. For 183565/183565 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7789 event pairs, 144 based on Foata normal form. 8/1315 useless extension candidates. Maximal degree in co-relation 8277. Up to 966 conditions per place. [2024-06-04 14:40:06,845 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 88 changer transitions 11/281 dead transitions. [2024-06-04 14:40:06,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 281 transitions, 3213 flow [2024-06-04 14:40:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:40:06,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:40:06,846 INFO L175 Difference]: Start difference. First operand has 329 places, 259 transitions, 2563 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:40:06,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 281 transitions, 3213 flow [2024-06-04 14:40:07,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 281 transitions, 3141 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:07,550 INFO L231 Difference]: Finished difference. Result has 333 places, 257 transitions, 2652 flow [2024-06-04 14:40:07,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2652, PETRI_PLACES=333, PETRI_TRANSITIONS=257} [2024-06-04 14:40:07,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-04 14:40:07,550 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 257 transitions, 2652 flow [2024-06-04 14:40:07,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:07,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:07,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:07,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 14:40:07,551 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)] === [2024-06-04 14:40:07,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:07,551 INFO L85 PathProgramCache]: Analyzing trace with hash -414589469, now seen corresponding path program 32 times [2024-06-04 14:40:07,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:07,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229391583] [2024-06-04 14:40:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:07,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:08,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:08,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229391583] [2024-06-04 14:40:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229391583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:08,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:08,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940669835] [2024-06-04 14:40:08,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:08,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:08,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:08,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:09,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:09,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 257 transitions, 2652 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:09,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:09,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:09,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:09,851 INFO L124 PetriNetUnfolderBase]: 660/1328 cut-off events. [2024-06-04 14:40:09,851 INFO L125 PetriNetUnfolderBase]: For 220486/220486 co-relation queries the response was YES. [2024-06-04 14:40:09,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9265 conditions, 1328 events. 660/1328 cut-off events. For 220486/220486 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7893 event pairs, 151 based on Foata normal form. 8/1335 useless extension candidates. Maximal degree in co-relation 9133. Up to 810 conditions per place. [2024-06-04 14:40:09,863 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 79 changer transitions 11/283 dead transitions. [2024-06-04 14:40:09,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 283 transitions, 3544 flow [2024-06-04 14:40:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 14:40:09,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:40:09,864 INFO L175 Difference]: Start difference. First operand has 333 places, 257 transitions, 2652 flow. Second operand 12 states and 144 transitions. [2024-06-04 14:40:09,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 283 transitions, 3544 flow [2024-06-04 14:40:10,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 283 transitions, 3360 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:40:10,461 INFO L231 Difference]: Finished difference. Result has 330 places, 253 transitions, 2599 flow [2024-06-04 14:40:10,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2599, PETRI_PLACES=330, PETRI_TRANSITIONS=253} [2024-06-04 14:40:10,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-04 14:40:10,462 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 253 transitions, 2599 flow [2024-06-04 14:40:10,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:10,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:10,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:10,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 14:40:10,463 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)] === [2024-06-04 14:40:10,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash -37442061, now seen corresponding path program 21 times [2024-06-04 14:40:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:10,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666394810] [2024-06-04 14:40:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666394810] [2024-06-04 14:40:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666394810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:11,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:11,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:11,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260399688] [2024-06-04 14:40:11,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:12,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:12,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 253 transitions, 2599 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:12,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:12,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:12,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:12,512 INFO L124 PetriNetUnfolderBase]: 641/1287 cut-off events. [2024-06-04 14:40:12,512 INFO L125 PetriNetUnfolderBase]: For 187188/187188 co-relation queries the response was YES. [2024-06-04 14:40:12,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9151 conditions, 1287 events. 641/1287 cut-off events. For 187188/187188 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7600 event pairs, 183 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 9021. Up to 1238 conditions per place. [2024-06-04 14:40:12,525 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 250 selfloop transitions, 16 changer transitions 0/268 dead transitions. [2024-06-04 14:40:12,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 268 transitions, 3207 flow [2024-06-04 14:40:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:12,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:12,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:40:12,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-04 14:40:12,526 INFO L175 Difference]: Start difference. First operand has 330 places, 253 transitions, 2599 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:40:12,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 268 transitions, 3207 flow [2024-06-04 14:40:13,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 268 transitions, 3069 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:40:13,061 INFO L231 Difference]: Finished difference. Result has 325 places, 254 transitions, 2541 flow [2024-06-04 14:40:13,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2541, PETRI_PLACES=325, PETRI_TRANSITIONS=254} [2024-06-04 14:40:13,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-04 14:40:13,061 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 254 transitions, 2541 flow [2024-06-04 14:40:13,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:13,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:13,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 14:40:13,062 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)] === [2024-06-04 14:40:13,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:13,062 INFO L85 PathProgramCache]: Analyzing trace with hash 963300647, now seen corresponding path program 33 times [2024-06-04 14:40:13,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:13,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705648661] [2024-06-04 14:40:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:14,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:14,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705648661] [2024-06-04 14:40:14,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705648661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:14,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256706141] [2024-06-04 14:40:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:14,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:14,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:14,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 254 transitions, 2541 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:14,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:14,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:14,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:15,452 INFO L124 PetriNetUnfolderBase]: 665/1343 cut-off events. [2024-06-04 14:40:15,452 INFO L125 PetriNetUnfolderBase]: For 257180/257180 co-relation queries the response was YES. [2024-06-04 14:40:15,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9209 conditions, 1343 events. 665/1343 cut-off events. For 257180/257180 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8028 event pairs, 189 based on Foata normal form. 16/1358 useless extension candidates. Maximal degree in co-relation 9081. Up to 1190 conditions per place. [2024-06-04 14:40:15,466 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 23 changer transitions 16/277 dead transitions. [2024-06-04 14:40:15,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 277 transitions, 3201 flow [2024-06-04 14:40:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:40:15,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:40:15,468 INFO L175 Difference]: Start difference. First operand has 325 places, 254 transitions, 2541 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:40:15,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 277 transitions, 3201 flow [2024-06-04 14:40:16,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 277 transitions, 3131 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:16,224 INFO L231 Difference]: Finished difference. Result has 328 places, 248 transitions, 2464 flow [2024-06-04 14:40:16,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2464, PETRI_PLACES=328, PETRI_TRANSITIONS=248} [2024-06-04 14:40:16,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-04 14:40:16,224 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 248 transitions, 2464 flow [2024-06-04 14:40:16,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:16,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:16,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:16,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 14:40:16,225 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)] === [2024-06-04 14:40:16,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:16,225 INFO L85 PathProgramCache]: Analyzing trace with hash -409820925, now seen corresponding path program 22 times [2024-06-04 14:40:16,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:16,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400182907] [2024-06-04 14:40:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:16,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:17,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:17,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400182907] [2024-06-04 14:40:17,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400182907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:17,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593806599] [2024-06-04 14:40:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:17,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:17,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:17,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:17,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:17,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 248 transitions, 2464 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:17,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:17,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:17,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:18,369 INFO L124 PetriNetUnfolderBase]: 627/1265 cut-off events. [2024-06-04 14:40:18,370 INFO L125 PetriNetUnfolderBase]: For 183665/183665 co-relation queries the response was YES. [2024-06-04 14:40:18,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8930 conditions, 1265 events. 627/1265 cut-off events. For 183665/183665 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7460 event pairs, 157 based on Foata normal form. 2/1266 useless extension candidates. Maximal degree in co-relation 8801. Up to 1093 conditions per place. [2024-06-04 14:40:18,383 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 54 changer transitions 0/265 dead transitions. [2024-06-04 14:40:18,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 265 transitions, 3086 flow [2024-06-04 14:40:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:18,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:40:18,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 14:40:18,384 INFO L175 Difference]: Start difference. First operand has 328 places, 248 transitions, 2464 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:40:18,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 265 transitions, 3086 flow [2024-06-04 14:40:19,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 265 transitions, 3030 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 14:40:19,051 INFO L231 Difference]: Finished difference. Result has 322 places, 249 transitions, 2566 flow [2024-06-04 14:40:19,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2566, PETRI_PLACES=322, PETRI_TRANSITIONS=249} [2024-06-04 14:40:19,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-04 14:40:19,051 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 249 transitions, 2566 flow [2024-06-04 14:40:19,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:19,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:19,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 14:40:19,052 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)] === [2024-06-04 14:40:19,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash 969794341, now seen corresponding path program 23 times [2024-06-04 14:40:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:19,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414841900] [2024-06-04 14:40:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:19,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414841900] [2024-06-04 14:40:20,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414841900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:20,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:20,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051630257] [2024-06-04 14:40:20,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:20,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:20,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:20,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:20,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 249 transitions, 2566 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:20,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:20,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:20,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:21,249 INFO L124 PetriNetUnfolderBase]: 631/1273 cut-off events. [2024-06-04 14:40:21,249 INFO L125 PetriNetUnfolderBase]: For 177943/177943 co-relation queries the response was YES. [2024-06-04 14:40:21,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9056 conditions, 1273 events. 631/1273 cut-off events. For 177943/177943 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7538 event pairs, 183 based on Foata normal form. 2/1274 useless extension candidates. Maximal degree in co-relation 8929. Up to 1183 conditions per place. [2024-06-04 14:40:21,263 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 28 changer transitions 0/266 dead transitions. [2024-06-04 14:40:21,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 266 transitions, 3190 flow [2024-06-04 14:40:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:21,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:21,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:40:21,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 14:40:21,264 INFO L175 Difference]: Start difference. First operand has 322 places, 249 transitions, 2566 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:40:21,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 266 transitions, 3190 flow [2024-06-04 14:40:21,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 266 transitions, 3001 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-04 14:40:21,941 INFO L231 Difference]: Finished difference. Result has 322 places, 250 transitions, 2483 flow [2024-06-04 14:40:21,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2483, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2024-06-04 14:40:21,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-04 14:40:21,942 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 2483 flow [2024-06-04 14:40:21,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:21,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:21,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:21,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 14:40:21,942 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)] === [2024-06-04 14:40:21,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:21,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2133256521, now seen corresponding path program 34 times [2024-06-04 14:40:21,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:21,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120352064] [2024-06-04 14:40:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:21,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:23,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:23,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120352064] [2024-06-04 14:40:23,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120352064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:23,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:23,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287187316] [2024-06-04 14:40:23,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:23,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:23,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:23,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:23,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:23,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:23,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 2483 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:23,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:23,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:23,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:24,081 INFO L124 PetriNetUnfolderBase]: 672/1360 cut-off events. [2024-06-04 14:40:24,081 INFO L125 PetriNetUnfolderBase]: For 268260/268260 co-relation queries the response was YES. [2024-06-04 14:40:24,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10303 conditions, 1360 events. 672/1360 cut-off events. For 268260/268260 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8127 event pairs, 192 based on Foata normal form. 8/1367 useless extension candidates. Maximal degree in co-relation 10175. Up to 1167 conditions per place. [2024-06-04 14:40:24,097 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 27 changer transitions 7/277 dead transitions. [2024-06-04 14:40:24,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 277 transitions, 3385 flow [2024-06-04 14:40:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:40:24,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:40:24,098 INFO L175 Difference]: Start difference. First operand has 322 places, 250 transitions, 2483 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:40:24,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 277 transitions, 3385 flow [2024-06-04 14:40:25,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 277 transitions, 3289 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:25,039 INFO L231 Difference]: Finished difference. Result has 325 places, 248 transitions, 2428 flow [2024-06-04 14:40:25,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2428, PETRI_PLACES=325, PETRI_TRANSITIONS=248} [2024-06-04 14:40:25,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-04 14:40:25,040 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 248 transitions, 2428 flow [2024-06-04 14:40:25,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:25,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:25,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:25,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 14:40:25,040 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)] === [2024-06-04 14:40:25,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash -409827869, now seen corresponding path program 35 times [2024-06-04 14:40:25,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:25,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396391448] [2024-06-04 14:40:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:25,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:26,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396391448] [2024-06-04 14:40:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396391448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:26,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100820635] [2024-06-04 14:40:26,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:26,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:26,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:26,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:26,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:26,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:26,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 248 transitions, 2428 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:26,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:26,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:26,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:27,397 INFO L124 PetriNetUnfolderBase]: 670/1358 cut-off events. [2024-06-04 14:40:27,397 INFO L125 PetriNetUnfolderBase]: For 284075/284075 co-relation queries the response was YES. [2024-06-04 14:40:27,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10268 conditions, 1358 events. 670/1358 cut-off events. For 284075/284075 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8159 event pairs, 182 based on Foata normal form. 10/1367 useless extension candidates. Maximal degree in co-relation 10139. Up to 1046 conditions per place. [2024-06-04 14:40:27,412 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 63 changer transitions 12/270 dead transitions. [2024-06-04 14:40:27,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 270 transitions, 3070 flow [2024-06-04 14:40:27,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 14:40:27,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 14:40:27,413 INFO L175 Difference]: Start difference. First operand has 325 places, 248 transitions, 2428 flow. Second operand 12 states and 143 transitions. [2024-06-04 14:40:27,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 270 transitions, 3070 flow [2024-06-04 14:40:28,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 270 transitions, 3016 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:40:28,207 INFO L231 Difference]: Finished difference. Result has 324 places, 242 transitions, 2454 flow [2024-06-04 14:40:28,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2454, PETRI_PLACES=324, PETRI_TRANSITIONS=242} [2024-06-04 14:40:28,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-04 14:40:28,207 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 242 transitions, 2454 flow [2024-06-04 14:40:28,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:28,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:28,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:28,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 14:40:28,208 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)] === [2024-06-04 14:40:28,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash -410005499, now seen corresponding path program 36 times [2024-06-04 14:40:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747803705] [2024-06-04 14:40:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:28,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:29,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:29,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747803705] [2024-06-04 14:40:29,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747803705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:29,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:29,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:29,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758572945] [2024-06-04 14:40:29,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:29,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:29,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:29,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:29,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:29,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 242 transitions, 2454 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:29,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:29,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:29,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:30,299 INFO L124 PetriNetUnfolderBase]: 648/1324 cut-off events. [2024-06-04 14:40:30,299 INFO L125 PetriNetUnfolderBase]: For 267570/267570 co-relation queries the response was YES. [2024-06-04 14:40:30,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10169 conditions, 1324 events. 648/1324 cut-off events. For 267570/267570 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7984 event pairs, 176 based on Foata normal form. 8/1331 useless extension candidates. Maximal degree in co-relation 10041. Up to 1091 conditions per place. [2024-06-04 14:40:30,314 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 57 changer transitions 11/263 dead transitions. [2024-06-04 14:40:30,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 263 transitions, 3064 flow [2024-06-04 14:40:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 14:40:30,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 14:40:30,315 INFO L175 Difference]: Start difference. First operand has 324 places, 242 transitions, 2454 flow. Second operand 12 states and 137 transitions. [2024-06-04 14:40:30,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 263 transitions, 3064 flow [2024-06-04 14:40:31,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 263 transitions, 2930 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-04 14:40:31,175 INFO L231 Difference]: Finished difference. Result has 321 places, 239 transitions, 2411 flow [2024-06-04 14:40:31,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2411, PETRI_PLACES=321, PETRI_TRANSITIONS=239} [2024-06-04 14:40:31,176 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-04 14:40:31,176 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 239 transitions, 2411 flow [2024-06-04 14:40:31,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:31,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:31,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:31,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 14:40:31,176 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)] === [2024-06-04 14:40:31,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:31,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2139936215, now seen corresponding path program 24 times [2024-06-04 14:40:31,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:31,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086951542] [2024-06-04 14:40:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:31,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:32,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:32,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086951542] [2024-06-04 14:40:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086951542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:32,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:32,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672730784] [2024-06-04 14:40:32,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:32,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:32,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:33,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:33,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 239 transitions, 2411 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:33,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:33,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:33,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:33,542 INFO L124 PetriNetUnfolderBase]: 633/1291 cut-off events. [2024-06-04 14:40:33,542 INFO L125 PetriNetUnfolderBase]: For 231291/231291 co-relation queries the response was YES. [2024-06-04 14:40:33,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10050 conditions, 1291 events. 633/1291 cut-off events. For 231291/231291 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7715 event pairs, 200 based on Foata normal form. 2/1292 useless extension candidates. Maximal degree in co-relation 9923. Up to 1204 conditions per place. [2024-06-04 14:40:33,554 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 24 changer transitions 0/255 dead transitions. [2024-06-04 14:40:33,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 255 transitions, 3005 flow [2024-06-04 14:40:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:40:33,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 14:40:33,555 INFO L175 Difference]: Start difference. First operand has 321 places, 239 transitions, 2411 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:40:33,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 255 transitions, 3005 flow [2024-06-04 14:40:34,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 255 transitions, 2877 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:40:34,484 INFO L231 Difference]: Finished difference. Result has 316 places, 240 transitions, 2383 flow [2024-06-04 14:40:34,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2383, PETRI_PLACES=316, PETRI_TRANSITIONS=240} [2024-06-04 14:40:34,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-04 14:40:34,485 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 240 transitions, 2383 flow [2024-06-04 14:40:34,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:34,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:34,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:34,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 14:40:34,485 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)] === [2024-06-04 14:40:34,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash 629712819, now seen corresponding path program 37 times [2024-06-04 14:40:34,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:34,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399980138] [2024-06-04 14:40:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:34,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:35,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399980138] [2024-06-04 14:40:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399980138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556791318] [2024-06-04 14:40:35,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:35,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:35,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:35,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 240 transitions, 2383 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:35,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:35,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:35,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:36,439 INFO L124 PetriNetUnfolderBase]: 649/1327 cut-off events. [2024-06-04 14:40:36,439 INFO L125 PetriNetUnfolderBase]: For 269418/269418 co-relation queries the response was YES. [2024-06-04 14:40:36,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10065 conditions, 1327 events. 649/1327 cut-off events. For 269418/269418 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7990 event pairs, 200 based on Foata normal form. 10/1336 useless extension candidates. Maximal degree in co-relation 9939. Up to 1201 conditions per place. [2024-06-04 14:40:36,452 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 22 changer transitions 13/261 dead transitions. [2024-06-04 14:40:36,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 261 transitions, 3003 flow [2024-06-04 14:40:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:40:36,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 14:40:36,456 INFO L175 Difference]: Start difference. First operand has 316 places, 240 transitions, 2383 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:40:36,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 261 transitions, 3003 flow [2024-06-04 14:40:37,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 261 transitions, 2913 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:37,348 INFO L231 Difference]: Finished difference. Result has 318 places, 235 transitions, 2288 flow [2024-06-04 14:40:37,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2288, PETRI_PLACES=318, PETRI_TRANSITIONS=235} [2024-06-04 14:40:37,348 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-04 14:40:37,348 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 235 transitions, 2288 flow [2024-06-04 14:40:37,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:37,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:37,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:37,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 14:40:37,349 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)] === [2024-06-04 14:40:37,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:37,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2139690261, now seen corresponding path program 38 times [2024-06-04 14:40:37,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:37,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738585414] [2024-06-04 14:40:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:37,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:41,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738585414] [2024-06-04 14:40:41,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738585414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:41,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:41,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050588078] [2024-06-04 14:40:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:41,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:41,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:41,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:41,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:41,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:41,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 235 transitions, 2288 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:41,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:41,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:41,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:42,376 INFO L124 PetriNetUnfolderBase]: 610/1250 cut-off events. [2024-06-04 14:40:42,376 INFO L125 PetriNetUnfolderBase]: For 219243/219243 co-relation queries the response was YES. [2024-06-04 14:40:42,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8636 conditions, 1250 events. 610/1250 cut-off events. For 219243/219243 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7425 event pairs, 183 based on Foata normal form. 10/1259 useless extension candidates. Maximal degree in co-relation 8509. Up to 1113 conditions per place. [2024-06-04 14:40:42,389 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 221 selfloop transitions, 25 changer transitions 9/257 dead transitions. [2024-06-04 14:40:42,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 257 transitions, 2904 flow [2024-06-04 14:40:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:40:42,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:40:42,390 INFO L175 Difference]: Start difference. First operand has 318 places, 235 transitions, 2288 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:40:42,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 257 transitions, 2904 flow [2024-06-04 14:40:43,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 257 transitions, 2844 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-04 14:40:43,076 INFO L231 Difference]: Finished difference. Result has 312 places, 232 transitions, 2254 flow [2024-06-04 14:40:43,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2254, PETRI_PLACES=312, PETRI_TRANSITIONS=232} [2024-06-04 14:40:43,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-04 14:40:43,077 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 232 transitions, 2254 flow [2024-06-04 14:40:43,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:43,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:43,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:43,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 14:40:43,077 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)] === [2024-06-04 14:40:43,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:43,078 INFO L85 PathProgramCache]: Analyzing trace with hash -243587145, now seen corresponding path program 25 times [2024-06-04 14:40:43,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:43,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032729922] [2024-06-04 14:40:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:44,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:44,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032729922] [2024-06-04 14:40:44,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032729922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:44,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:44,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:44,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471812447] [2024-06-04 14:40:44,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:44,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:44,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:44,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:44,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:44,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:44,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 232 transitions, 2254 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:44,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:44,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:44,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:45,136 INFO L124 PetriNetUnfolderBase]: 604/1244 cut-off events. [2024-06-04 14:40:45,136 INFO L125 PetriNetUnfolderBase]: For 222689/222689 co-relation queries the response was YES. [2024-06-04 14:40:45,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8586 conditions, 1244 events. 604/1244 cut-off events. For 222689/222689 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7439 event pairs, 173 based on Foata normal form. 12/1255 useless extension candidates. Maximal degree in co-relation 8463. Up to 975 conditions per place. [2024-06-04 14:40:45,150 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 51 changer transitions 7/253 dead transitions. [2024-06-04 14:40:45,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 253 transitions, 2904 flow [2024-06-04 14:40:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:40:45,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:40:45,151 INFO L175 Difference]: Start difference. First operand has 312 places, 232 transitions, 2254 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:40:45,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 253 transitions, 2904 flow [2024-06-04 14:40:45,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 253 transitions, 2848 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:40:45,731 INFO L231 Difference]: Finished difference. Result has 308 places, 230 transitions, 2332 flow [2024-06-04 14:40:45,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2332, PETRI_PLACES=308, PETRI_TRANSITIONS=230} [2024-06-04 14:40:45,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-04 14:40:45,732 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 230 transitions, 2332 flow [2024-06-04 14:40:45,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:45,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:45,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:45,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 14:40:45,733 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)] === [2024-06-04 14:40:45,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash -243594089, now seen corresponding path program 39 times [2024-06-04 14:40:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:45,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366094894] [2024-06-04 14:40:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:45,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:47,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:47,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366094894] [2024-06-04 14:40:47,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366094894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:47,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:47,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:47,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880715681] [2024-06-04 14:40:47,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:47,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:47,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:47,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:47,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:47,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:47,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 230 transitions, 2332 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:47,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:47,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:47,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:47,715 INFO L124 PetriNetUnfolderBase]: 604/1252 cut-off events. [2024-06-04 14:40:47,715 INFO L125 PetriNetUnfolderBase]: For 235164/235164 co-relation queries the response was YES. [2024-06-04 14:40:47,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 1252 events. 604/1252 cut-off events. For 235164/235164 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7522 event pairs, 181 based on Foata normal form. 16/1267 useless extension candidates. Maximal degree in co-relation 8515. Up to 965 conditions per place. [2024-06-04 14:40:47,731 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 45 changer transitions 14/250 dead transitions. [2024-06-04 14:40:47,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 250 transitions, 2928 flow [2024-06-04 14:40:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:40:47,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:40:47,732 INFO L175 Difference]: Start difference. First operand has 308 places, 230 transitions, 2332 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:40:47,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 250 transitions, 2928 flow [2024-06-04 14:40:48,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 250 transitions, 2780 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-04 14:40:48,285 INFO L231 Difference]: Finished difference. Result has 308 places, 224 transitions, 2227 flow [2024-06-04 14:40:48,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2227, PETRI_PLACES=308, PETRI_TRANSITIONS=224} [2024-06-04 14:40:48,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-04 14:40:48,285 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 224 transitions, 2227 flow [2024-06-04 14:40:48,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:48,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:48,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:48,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 14:40:48,286 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)] === [2024-06-04 14:40:48,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1473567269, now seen corresponding path program 26 times [2024-06-04 14:40:48,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:48,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435670846] [2024-06-04 14:40:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:49,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:49,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435670846] [2024-06-04 14:40:49,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435670846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:49,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:49,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:49,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938938517] [2024-06-04 14:40:49,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:49,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:49,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:49,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:49,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:49,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:49,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 224 transitions, 2227 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:49,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:49,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:49,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:50,382 INFO L124 PetriNetUnfolderBase]: 566/1174 cut-off events. [2024-06-04 14:40:50,382 INFO L125 PetriNetUnfolderBase]: For 167448/167448 co-relation queries the response was YES. [2024-06-04 14:40:50,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8295 conditions, 1174 events. 566/1174 cut-off events. For 167448/167448 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6970 event pairs, 167 based on Foata normal form. 2/1175 useless extension candidates. Maximal degree in co-relation 8173. Up to 1083 conditions per place. [2024-06-04 14:40:50,394 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 31 changer transitions 0/243 dead transitions. [2024-06-04 14:40:50,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 243 transitions, 2821 flow [2024-06-04 14:40:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:40:50,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 14:40:50,395 INFO L175 Difference]: Start difference. First operand has 308 places, 224 transitions, 2227 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:40:50,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 243 transitions, 2821 flow [2024-06-04 14:40:50,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 243 transitions, 2719 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:40:50,887 INFO L231 Difference]: Finished difference. Result has 302 places, 225 transitions, 2243 flow [2024-06-04 14:40:50,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2243, PETRI_PLACES=302, PETRI_TRANSITIONS=225} [2024-06-04 14:40:50,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-04 14:40:50,888 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 225 transitions, 2243 flow [2024-06-04 14:40:50,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:50,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:50,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:50,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 14:40:50,888 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)] === [2024-06-04 14:40:50,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:50,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1709742629, now seen corresponding path program 27 times [2024-06-04 14:40:50,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:50,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264886156] [2024-06-04 14:40:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:50,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:52,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:52,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264886156] [2024-06-04 14:40:52,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264886156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:52,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:52,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:52,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646808904] [2024-06-04 14:40:52,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:52,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:52,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:52,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:52,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 225 transitions, 2243 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:52,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:52,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:52,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:52,808 INFO L124 PetriNetUnfolderBase]: 570/1182 cut-off events. [2024-06-04 14:40:52,809 INFO L125 PetriNetUnfolderBase]: For 158756/158756 co-relation queries the response was YES. [2024-06-04 14:40:52,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8288 conditions, 1182 events. 570/1182 cut-off events. For 158756/158756 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7024 event pairs, 175 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 8169. Up to 1115 conditions per place. [2024-06-04 14:40:52,820 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 23 changer transitions 1/242 dead transitions. [2024-06-04 14:40:52,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 242 transitions, 2831 flow [2024-06-04 14:40:52,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:40:52,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-04 14:40:52,821 INFO L175 Difference]: Start difference. First operand has 302 places, 225 transitions, 2243 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:40:52,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 242 transitions, 2831 flow [2024-06-04 14:40:53,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 242 transitions, 2723 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:53,345 INFO L231 Difference]: Finished difference. Result has 305 places, 226 transitions, 2245 flow [2024-06-04 14:40:53,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2245, PETRI_PLACES=305, PETRI_TRANSITIONS=226} [2024-06-04 14:40:53,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-04 14:40:53,346 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 226 transitions, 2245 flow [2024-06-04 14:40:53,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:53,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:53,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:53,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 14:40:53,347 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)] === [2024-06-04 14:40:53,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:53,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1709750999, now seen corresponding path program 28 times [2024-06-04 14:40:53,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:53,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128466520] [2024-06-04 14:40:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:53,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:54,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:54,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128466520] [2024-06-04 14:40:54,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128466520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:54,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:54,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:54,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288560899] [2024-06-04 14:40:54,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:54,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:54,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:54,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:54,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:55,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:55,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 226 transitions, 2245 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:55,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:55,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:55,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:55,494 INFO L124 PetriNetUnfolderBase]: 554/1150 cut-off events. [2024-06-04 14:40:55,495 INFO L125 PetriNetUnfolderBase]: For 161834/161834 co-relation queries the response was YES. [2024-06-04 14:40:55,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8156 conditions, 1150 events. 554/1150 cut-off events. For 161834/161834 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6814 event pairs, 171 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 8035. Up to 1058 conditions per place. [2024-06-04 14:40:55,506 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 27 changer transitions 0/242 dead transitions. [2024-06-04 14:40:55,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 242 transitions, 2819 flow [2024-06-04 14:40:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:55,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:40:55,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 14:40:55,507 INFO L175 Difference]: Start difference. First operand has 305 places, 226 transitions, 2245 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:40:55,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 242 transitions, 2819 flow [2024-06-04 14:40:56,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 242 transitions, 2729 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:56,012 INFO L231 Difference]: Finished difference. Result has 308 places, 227 transitions, 2267 flow [2024-06-04 14:40:56,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2267, PETRI_PLACES=308, PETRI_TRANSITIONS=227} [2024-06-04 14:40:56,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-04 14:40:56,012 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 227 transitions, 2267 flow [2024-06-04 14:40:56,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:56,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:56,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:56,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 14:40:56,013 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)] === [2024-06-04 14:40:56,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1710039299, now seen corresponding path program 29 times [2024-06-04 14:40:56,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:56,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215955598] [2024-06-04 14:40:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:56,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215955598] [2024-06-04 14:40:57,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215955598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:57,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:57,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:40:57,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155814084] [2024-06-04 14:40:57,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:57,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:40:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:40:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:40:57,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:40:57,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 227 transitions, 2267 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:57,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:57,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:40:57,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:58,302 INFO L124 PetriNetUnfolderBase]: 558/1158 cut-off events. [2024-06-04 14:40:58,302 INFO L125 PetriNetUnfolderBase]: For 165390/165390 co-relation queries the response was YES. [2024-06-04 14:40:58,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8237 conditions, 1158 events. 558/1158 cut-off events. For 165390/165390 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6874 event pairs, 169 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 8115. Up to 1088 conditions per place. [2024-06-04 14:40:58,314 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 23 changer transitions 0/243 dead transitions. [2024-06-04 14:40:58,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 243 transitions, 2843 flow [2024-06-04 14:40:58,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:58,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:58,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:40:58,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:40:58,316 INFO L175 Difference]: Start difference. First operand has 308 places, 227 transitions, 2267 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:40:58,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 243 transitions, 2843 flow [2024-06-04 14:40:58,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 243 transitions, 2700 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-04 14:40:58,884 INFO L231 Difference]: Finished difference. Result has 309 places, 228 transitions, 2230 flow [2024-06-04 14:40:58,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2230, PETRI_PLACES=309, PETRI_TRANSITIONS=228} [2024-06-04 14:40:58,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 14:40:58,884 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 228 transitions, 2230 flow [2024-06-04 14:40:58,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:58,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:58,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:58,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 14:40:58,885 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)] === [2024-06-04 14:40:58,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:58,885 INFO L85 PathProgramCache]: Analyzing trace with hash -237100395, now seen corresponding path program 30 times [2024-06-04 14:40:58,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:58,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444171273] [2024-06-04 14:40:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:58,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:00,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:00,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444171273] [2024-06-04 14:41:00,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444171273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:00,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:00,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:00,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662871807] [2024-06-04 14:41:00,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:00,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:00,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:00,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:00,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:00,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 228 transitions, 2230 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:00,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:00,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:00,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:01,187 INFO L124 PetriNetUnfolderBase]: 562/1166 cut-off events. [2024-06-04 14:41:01,188 INFO L125 PetriNetUnfolderBase]: For 168760/168760 co-relation queries the response was YES. [2024-06-04 14:41:01,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8226 conditions, 1166 events. 562/1166 cut-off events. For 168760/168760 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6925 event pairs, 167 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 8104. Up to 1003 conditions per place. [2024-06-04 14:41:01,199 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 200 selfloop transitions, 42 changer transitions 0/244 dead transitions. [2024-06-04 14:41:01,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 244 transitions, 2818 flow [2024-06-04 14:41:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:41:01,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 14:41:01,200 INFO L175 Difference]: Start difference. First operand has 309 places, 228 transitions, 2230 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:41:01,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 244 transitions, 2818 flow [2024-06-04 14:41:01,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 244 transitions, 2722 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:01,807 INFO L231 Difference]: Finished difference. Result has 311 places, 229 transitions, 2280 flow [2024-06-04 14:41:01,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2280, PETRI_PLACES=311, PETRI_TRANSITIONS=229} [2024-06-04 14:41:01,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-04 14:41:01,807 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 229 transitions, 2280 flow [2024-06-04 14:41:01,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:01,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:01,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:01,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 14:41:01,808 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)] === [2024-06-04 14:41:01,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:01,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1473560325, now seen corresponding path program 40 times [2024-06-04 14:41:01,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:01,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499042511] [2024-06-04 14:41:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:01,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:03,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499042511] [2024-06-04 14:41:03,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499042511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:03,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:03,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151550753] [2024-06-04 14:41:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:03,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:03,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:03,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:03,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 229 transitions, 2280 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:03,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:03,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:03,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:04,104 INFO L124 PetriNetUnfolderBase]: 578/1202 cut-off events. [2024-06-04 14:41:04,105 INFO L125 PetriNetUnfolderBase]: For 212529/212529 co-relation queries the response was YES. [2024-06-04 14:41:04,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8351 conditions, 1202 events. 578/1202 cut-off events. For 212529/212529 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7186 event pairs, 171 based on Foata normal form. 10/1211 useless extension candidates. Maximal degree in co-relation 8228. Up to 1067 conditions per place. [2024-06-04 14:41:04,117 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 29 changer transitions 11/253 dead transitions. [2024-06-04 14:41:04,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 253 transitions, 2896 flow [2024-06-04 14:41:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:41:04,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-04 14:41:04,118 INFO L175 Difference]: Start difference. First operand has 311 places, 229 transitions, 2280 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:41:04,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 253 transitions, 2896 flow [2024-06-04 14:41:04,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 253 transitions, 2760 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:04,749 INFO L231 Difference]: Finished difference. Result has 314 places, 226 transitions, 2177 flow [2024-06-04 14:41:04,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2177, PETRI_PLACES=314, PETRI_TRANSITIONS=226} [2024-06-04 14:41:04,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 14:41:04,750 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 226 transitions, 2177 flow [2024-06-04 14:41:04,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:04,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:04,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:04,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 14:41:04,751 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)] === [2024-06-04 14:41:04,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1473387345, now seen corresponding path program 41 times [2024-06-04 14:41:04,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:04,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661684742] [2024-06-04 14:41:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:04,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:06,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:06,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661684742] [2024-06-04 14:41:06,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661684742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:06,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:06,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:06,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315175016] [2024-06-04 14:41:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:06,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:06,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:06,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:06,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 226 transitions, 2177 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:06,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:06,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:06,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:07,078 INFO L124 PetriNetUnfolderBase]: 568/1188 cut-off events. [2024-06-04 14:41:07,079 INFO L125 PetriNetUnfolderBase]: For 215002/215002 co-relation queries the response was YES. [2024-06-04 14:41:07,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8172 conditions, 1188 events. 568/1188 cut-off events. For 215002/215002 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7095 event pairs, 173 based on Foata normal form. 10/1197 useless extension candidates. Maximal degree in co-relation 8048. Up to 1038 conditions per place. [2024-06-04 14:41:07,097 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 33 changer transitions 9/252 dead transitions. [2024-06-04 14:41:07,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 252 transitions, 2799 flow [2024-06-04 14:41:07,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:41:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:41:07,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-04 14:41:07,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605769230769231 [2024-06-04 14:41:07,098 INFO L175 Difference]: Start difference. First operand has 314 places, 226 transitions, 2177 flow. Second operand 13 states and 150 transitions. [2024-06-04 14:41:07,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 252 transitions, 2799 flow [2024-06-04 14:41:07,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 252 transitions, 2737 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:41:07,646 INFO L231 Difference]: Finished difference. Result has 313 places, 223 transitions, 2163 flow [2024-06-04 14:41:07,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2115, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2163, PETRI_PLACES=313, PETRI_TRANSITIONS=223} [2024-06-04 14:41:07,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-04 14:41:07,647 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 223 transitions, 2163 flow [2024-06-04 14:41:07,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:07,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:07,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:07,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 14:41:07,647 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)] === [2024-06-04 14:41:07,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:07,647 INFO L85 PathProgramCache]: Analyzing trace with hash -237092025, now seen corresponding path program 31 times [2024-06-04 14:41:07,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:07,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119055642] [2024-06-04 14:41:07,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:07,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:09,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:09,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119055642] [2024-06-04 14:41:09,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119055642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:09,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:09,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:09,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330288042] [2024-06-04 14:41:09,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:09,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:09,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:09,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:09,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:09,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:09,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 223 transitions, 2163 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:09,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:09,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:09,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:10,044 INFO L124 PetriNetUnfolderBase]: 548/1148 cut-off events. [2024-06-04 14:41:10,045 INFO L125 PetriNetUnfolderBase]: For 170870/170870 co-relation queries the response was YES. [2024-06-04 14:41:10,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 1148 events. 548/1148 cut-off events. For 170870/170870 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6861 event pairs, 167 based on Foata normal form. 2/1149 useless extension candidates. Maximal degree in co-relation 7962. Up to 948 conditions per place. [2024-06-04 14:41:10,060 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 47 changer transitions 0/239 dead transitions. [2024-06-04 14:41:10,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 239 transitions, 2739 flow [2024-06-04 14:41:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 14:41:10,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:41:10,061 INFO L175 Difference]: Start difference. First operand has 313 places, 223 transitions, 2163 flow. Second operand 11 states and 128 transitions. [2024-06-04 14:41:10,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 239 transitions, 2739 flow [2024-06-04 14:41:10,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 239 transitions, 2657 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-04 14:41:10,674 INFO L231 Difference]: Finished difference. Result has 309 places, 224 transitions, 2239 flow [2024-06-04 14:41:10,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2239, PETRI_PLACES=309, PETRI_TRANSITIONS=224} [2024-06-04 14:41:10,675 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 14:41:10,675 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 224 transitions, 2239 flow [2024-06-04 14:41:10,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:10,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:10,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:10,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 14:41:10,675 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)] === [2024-06-04 14:41:10,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash -237337979, now seen corresponding path program 42 times [2024-06-04 14:41:10,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:10,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570383770] [2024-06-04 14:41:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:10,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:12,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570383770] [2024-06-04 14:41:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570383770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:12,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:12,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644626205] [2024-06-04 14:41:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:12,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:12,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 224 transitions, 2239 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:12,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:12,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:12,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:13,061 INFO L124 PetriNetUnfolderBase]: 564/1184 cut-off events. [2024-06-04 14:41:13,062 INFO L125 PetriNetUnfolderBase]: For 212679/212679 co-relation queries the response was YES. [2024-06-04 14:41:13,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8251 conditions, 1184 events. 564/1184 cut-off events. For 212679/212679 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7129 event pairs, 171 based on Foata normal form. 10/1193 useless extension candidates. Maximal degree in co-relation 8128. Up to 954 conditions per place. [2024-06-04 14:41:13,073 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 190 selfloop transitions, 44 changer transitions 9/245 dead transitions. [2024-06-04 14:41:13,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 245 transitions, 2825 flow [2024-06-04 14:41:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:13,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:41:13,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:41:13,074 INFO L175 Difference]: Start difference. First operand has 309 places, 224 transitions, 2239 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:41:13,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 245 transitions, 2825 flow [2024-06-04 14:41:13,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 245 transitions, 2677 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:13,626 INFO L231 Difference]: Finished difference. Result has 312 places, 221 transitions, 2160 flow [2024-06-04 14:41:13,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2160, PETRI_PLACES=312, PETRI_TRANSITIONS=221} [2024-06-04 14:41:13,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-04 14:41:13,627 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 221 transitions, 2160 flow [2024-06-04 14:41:13,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:13,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:13,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:13,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 14:41:13,627 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)] === [2024-06-04 14:41:13,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:13,628 INFO L85 PathProgramCache]: Analyzing trace with hash -243771719, now seen corresponding path program 43 times [2024-06-04 14:41:13,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:13,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056961989] [2024-06-04 14:41:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:13,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:15,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056961989] [2024-06-04 14:41:15,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056961989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:15,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:15,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:15,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008074230] [2024-06-04 14:41:15,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:15,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:15,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:15,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:15,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:15,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:15,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 221 transitions, 2160 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:15,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:15,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:15,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:15,760 INFO L124 PetriNetUnfolderBase]: 550/1162 cut-off events. [2024-06-04 14:41:15,760 INFO L125 PetriNetUnfolderBase]: For 204324/204324 co-relation queries the response was YES. [2024-06-04 14:41:15,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8054 conditions, 1162 events. 550/1162 cut-off events. For 204324/204324 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6966 event pairs, 167 based on Foata normal form. 8/1169 useless extension candidates. Maximal degree in co-relation 7930. Up to 938 conditions per place. [2024-06-04 14:41:15,772 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 43 changer transitions 12/241 dead transitions. [2024-06-04 14:41:15,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 241 transitions, 2720 flow [2024-06-04 14:41:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-04 14:41:15,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 14:41:15,773 INFO L175 Difference]: Start difference. First operand has 312 places, 221 transitions, 2160 flow. Second operand 12 states and 136 transitions. [2024-06-04 14:41:15,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 241 transitions, 2720 flow [2024-06-04 14:41:16,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 241 transitions, 2626 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:41:16,317 INFO L231 Difference]: Finished difference. Result has 310 places, 217 transitions, 2122 flow [2024-06-04 14:41:16,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2122, PETRI_PLACES=310, PETRI_TRANSITIONS=217} [2024-06-04 14:41:16,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-04 14:41:16,317 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 217 transitions, 2122 flow [2024-06-04 14:41:16,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:16,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:16,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:16,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 14:41:16,318 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)] === [2024-06-04 14:41:16,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1473382695, now seen corresponding path program 44 times [2024-06-04 14:41:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:16,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526661365] [2024-06-04 14:41:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:17,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:17,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526661365] [2024-06-04 14:41:17,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526661365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:17,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:17,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960472103] [2024-06-04 14:41:17,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:17,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:17,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:17,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 217 transitions, 2122 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:17,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:17,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:17,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:18,363 INFO L124 PetriNetUnfolderBase]: 564/1192 cut-off events. [2024-06-04 14:41:18,364 INFO L125 PetriNetUnfolderBase]: For 243705/243705 co-relation queries the response was YES. [2024-06-04 14:41:18,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9079 conditions, 1192 events. 564/1192 cut-off events. For 243705/243705 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7156 event pairs, 177 based on Foata normal form. 8/1199 useless extension candidates. Maximal degree in co-relation 8956. Up to 923 conditions per place. [2024-06-04 14:41:18,375 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 29 changer transitions 8/245 dead transitions. [2024-06-04 14:41:18,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 245 transitions, 2994 flow [2024-06-04 14:41:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 14:41:18,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 14:41:18,377 INFO L175 Difference]: Start difference. First operand has 310 places, 217 transitions, 2122 flow. Second operand 12 states and 143 transitions. [2024-06-04 14:41:18,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 245 transitions, 2994 flow [2024-06-04 14:41:18,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 245 transitions, 2892 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 14:41:18,923 INFO L231 Difference]: Finished difference. Result has 304 places, 214 transitions, 2062 flow [2024-06-04 14:41:18,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2062, PETRI_PLACES=304, PETRI_TRANSITIONS=214} [2024-06-04 14:41:18,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-04 14:41:18,923 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 214 transitions, 2062 flow [2024-06-04 14:41:18,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:18,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:18,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:18,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-04 14:41:18,924 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)] === [2024-06-04 14:41:18,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:18,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1480054019, now seen corresponding path program 32 times [2024-06-04 14:41:18,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:18,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98293764] [2024-06-04 14:41:18,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:18,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:20,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:20,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98293764] [2024-06-04 14:41:20,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98293764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:20,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:20,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:20,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171094713] [2024-06-04 14:41:20,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:20,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:20,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:20,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:20,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 214 transitions, 2062 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:20,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:20,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:20,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:21,107 INFO L124 PetriNetUnfolderBase]: 542/1146 cut-off events. [2024-06-04 14:41:21,107 INFO L125 PetriNetUnfolderBase]: For 190670/190670 co-relation queries the response was YES. [2024-06-04 14:41:21,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8514 conditions, 1146 events. 542/1146 cut-off events. For 190670/190670 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6826 event pairs, 182 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 8394. Up to 1047 conditions per place. [2024-06-04 14:41:21,118 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 200 selfloop transitions, 30 changer transitions 0/232 dead transitions. [2024-06-04 14:41:21,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 232 transitions, 2640 flow [2024-06-04 14:41:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:21,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:41:21,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 14:41:21,119 INFO L175 Difference]: Start difference. First operand has 304 places, 214 transitions, 2062 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:41:21,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 232 transitions, 2640 flow [2024-06-04 14:41:21,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 232 transitions, 2579 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-04 14:41:21,852 INFO L231 Difference]: Finished difference. Result has 299 places, 215 transitions, 2127 flow [2024-06-04 14:41:21,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2127, PETRI_PLACES=299, PETRI_TRANSITIONS=215} [2024-06-04 14:41:21,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-04 14:41:21,852 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 215 transitions, 2127 flow [2024-06-04 14:41:21,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:21,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:21,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:21,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-04 14:41:21,853 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)] === [2024-06-04 14:41:21,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:21,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1252087001, now seen corresponding path program 33 times [2024-06-04 14:41:21,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:21,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377125300] [2024-06-04 14:41:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:21,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:23,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377125300] [2024-06-04 14:41:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377125300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:23,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:23,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809193534] [2024-06-04 14:41:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:23,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:23,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:23,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:23,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 215 transitions, 2127 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:23,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:23,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:23,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:23,926 INFO L124 PetriNetUnfolderBase]: 539/1141 cut-off events. [2024-06-04 14:41:23,926 INFO L125 PetriNetUnfolderBase]: For 173808/173808 co-relation queries the response was YES. [2024-06-04 14:41:23,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8193 conditions, 1141 events. 539/1141 cut-off events. For 173808/173808 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6815 event pairs, 181 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 8076. Up to 1030 conditions per place. [2024-06-04 14:41:23,937 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 30 changer transitions 0/231 dead transitions. [2024-06-04 14:41:23,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 231 transitions, 2633 flow [2024-06-04 14:41:23,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:41:23,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 14:41:23,938 INFO L175 Difference]: Start difference. First operand has 299 places, 215 transitions, 2127 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:41:23,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 231 transitions, 2633 flow [2024-06-04 14:41:24,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 231 transitions, 2517 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:24,615 INFO L231 Difference]: Finished difference. Result has 301 places, 215 transitions, 2075 flow [2024-06-04 14:41:24,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2075, PETRI_PLACES=301, PETRI_TRANSITIONS=215} [2024-06-04 14:41:24,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 14:41:24,616 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 215 transitions, 2075 flow [2024-06-04 14:41:24,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:24,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:24,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:24,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-04 14:41:24,616 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)] === [2024-06-04 14:41:24,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:24,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1252332955, now seen corresponding path program 45 times [2024-06-04 14:41:24,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:24,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267179085] [2024-06-04 14:41:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:24,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:26,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:26,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267179085] [2024-06-04 14:41:26,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267179085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:26,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:26,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:26,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173357964] [2024-06-04 14:41:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:26,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:26,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:26,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 215 transitions, 2075 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:26,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:26,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:26,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:27,449 INFO L124 PetriNetUnfolderBase]: 526/1118 cut-off events. [2024-06-04 14:41:27,450 INFO L125 PetriNetUnfolderBase]: For 165855/165855 co-relation queries the response was YES. [2024-06-04 14:41:27,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7048 conditions, 1118 events. 526/1118 cut-off events. For 165855/165855 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6667 event pairs, 168 based on Foata normal form. 10/1127 useless extension candidates. Maximal degree in co-relation 6930. Up to 977 conditions per place. [2024-06-04 14:41:27,461 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 27 changer transitions 9/236 dead transitions. [2024-06-04 14:41:27,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 236 transitions, 2625 flow [2024-06-04 14:41:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:41:27,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-04 14:41:27,462 INFO L175 Difference]: Start difference. First operand has 301 places, 215 transitions, 2075 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:41:27,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 236 transitions, 2625 flow [2024-06-04 14:41:27,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 236 transitions, 2353 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-04 14:41:27,843 INFO L231 Difference]: Finished difference. Result has 301 places, 211 transitions, 1820 flow [2024-06-04 14:41:27,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1820, PETRI_PLACES=301, PETRI_TRANSITIONS=211} [2024-06-04 14:41:27,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 14:41:27,844 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 211 transitions, 1820 flow [2024-06-04 14:41:27,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:27,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:27,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:27,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-04 14:41:27,844 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)] === [2024-06-04 14:41:27,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:27,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1157183819, now seen corresponding path program 1 times [2024-06-04 14:41:27,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:27,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430030993] [2024-06-04 14:41:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:27,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:29,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:29,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430030993] [2024-06-04 14:41:29,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430030993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:29,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:29,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:29,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588863810] [2024-06-04 14:41:29,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:29,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:29,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:29,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:29,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:29,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 211 transitions, 1820 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:29,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:29,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:29,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:30,390 INFO L124 PetriNetUnfolderBase]: 508/1088 cut-off events. [2024-06-04 14:41:30,390 INFO L125 PetriNetUnfolderBase]: For 147292/147292 co-relation queries the response was YES. [2024-06-04 14:41:30,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6514 conditions, 1088 events. 508/1088 cut-off events. For 147292/147292 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6500 event pairs, 116 based on Foata normal form. 6/1093 useless extension candidates. Maximal degree in co-relation 6397. Up to 944 conditions per place. [2024-06-04 14:41:30,400 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 13 changer transitions 35/231 dead transitions. [2024-06-04 14:41:30,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 231 transitions, 2340 flow [2024-06-04 14:41:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:41:30,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-04 14:41:30,401 INFO L175 Difference]: Start difference. First operand has 301 places, 211 transitions, 1820 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:41:30,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 231 transitions, 2340 flow [2024-06-04 14:41:30,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 231 transitions, 2178 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-06-04 14:41:30,790 INFO L231 Difference]: Finished difference. Result has 295 places, 189 transitions, 1554 flow [2024-06-04 14:41:30,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1554, PETRI_PLACES=295, PETRI_TRANSITIONS=189} [2024-06-04 14:41:30,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-04 14:41:30,791 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 189 transitions, 1554 flow [2024-06-04 14:41:30,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:30,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:30,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:30,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-04 14:41:30,791 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)] === [2024-06-04 14:41:30,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:30,791 INFO L85 PathProgramCache]: Analyzing trace with hash -317337961, now seen corresponding path program 2 times [2024-06-04 14:41:30,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:30,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092840628] [2024-06-04 14:41:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:30,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:32,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:32,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092840628] [2024-06-04 14:41:32,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092840628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:32,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:32,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:32,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612596521] [2024-06-04 14:41:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:32,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:32,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:32,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:32,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 189 transitions, 1554 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:32,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:32,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:32,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:32,888 INFO L124 PetriNetUnfolderBase]: 473/1002 cut-off events. [2024-06-04 14:41:32,889 INFO L125 PetriNetUnfolderBase]: For 142025/142025 co-relation queries the response was YES. [2024-06-04 14:41:32,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5908 conditions, 1002 events. 473/1002 cut-off events. For 142025/142025 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5790 event pairs, 102 based on Foata normal form. 6/1007 useless extension candidates. Maximal degree in co-relation 5795. Up to 553 conditions per place. [2024-06-04 14:41:32,898 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 67 changer transitions 17/211 dead transitions. [2024-06-04 14:41:32,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 211 transitions, 2048 flow [2024-06-04 14:41:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:32,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:41:32,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:41:32,899 INFO L175 Difference]: Start difference. First operand has 295 places, 189 transitions, 1554 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:41:32,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 211 transitions, 2048 flow [2024-06-04 14:41:33,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 211 transitions, 1960 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-06-04 14:41:33,240 INFO L231 Difference]: Finished difference. Result has 267 places, 180 transitions, 1538 flow [2024-06-04 14:41:33,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1538, PETRI_PLACES=267, PETRI_TRANSITIONS=180} [2024-06-04 14:41:33,240 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-04 14:41:33,240 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 180 transitions, 1538 flow [2024-06-04 14:41:33,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:33,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:33,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:33,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-04 14:41:33,241 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)] === [2024-06-04 14:41:33,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:33,241 INFO L85 PathProgramCache]: Analyzing trace with hash -372987863, now seen corresponding path program 3 times [2024-06-04 14:41:33,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:33,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925764414] [2024-06-04 14:41:33,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:33,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:35,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925764414] [2024-06-04 14:41:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925764414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:35,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:35,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252826696] [2024-06-04 14:41:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:35,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:35,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:35,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 180 transitions, 1538 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:35,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:35,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:35,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:35,936 INFO L124 PetriNetUnfolderBase]: 439/928 cut-off events. [2024-06-04 14:41:35,936 INFO L125 PetriNetUnfolderBase]: For 99736/99736 co-relation queries the response was YES. [2024-06-04 14:41:35,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 928 events. 439/928 cut-off events. For 99736/99736 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5236 event pairs, 89 based on Foata normal form. 6/933 useless extension candidates. Maximal degree in co-relation 4849. Up to 506 conditions per place. [2024-06-04 14:41:35,944 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 66 changer transitions 15/201 dead transitions. [2024-06-04 14:41:35,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 201 transitions, 2002 flow [2024-06-04 14:41:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 14:41:35,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 14:41:35,945 INFO L175 Difference]: Start difference. First operand has 267 places, 180 transitions, 1538 flow. Second operand 12 states and 135 transitions. [2024-06-04 14:41:35,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 201 transitions, 2002 flow [2024-06-04 14:41:36,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 201 transitions, 1860 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:41:36,145 INFO L231 Difference]: Finished difference. Result has 261 places, 173 transitions, 1478 flow [2024-06-04 14:41:36,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1478, PETRI_PLACES=261, PETRI_TRANSITIONS=173} [2024-06-04 14:41:36,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-04 14:41:36,146 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 173 transitions, 1478 flow [2024-06-04 14:41:36,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:36,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:36,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:36,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-04 14:41:36,146 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)] === [2024-06-04 14:41:36,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:36,147 INFO L85 PathProgramCache]: Analyzing trace with hash -115989241, now seen corresponding path program 4 times [2024-06-04 14:41:36,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:36,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017049645] [2024-06-04 14:41:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:38,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:38,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017049645] [2024-06-04 14:41:38,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017049645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:38,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:38,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:38,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014021077] [2024-06-04 14:41:38,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:38,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:38,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:38,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:38,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:38,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:38,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 173 transitions, 1478 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:38,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:38,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:38,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:38,682 INFO L124 PetriNetUnfolderBase]: 417/890 cut-off events. [2024-06-04 14:41:38,683 INFO L125 PetriNetUnfolderBase]: For 93286/93286 co-relation queries the response was YES. [2024-06-04 14:41:38,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 890 events. 417/890 cut-off events. For 93286/93286 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5012 event pairs, 85 based on Foata normal form. 6/895 useless extension candidates. Maximal degree in co-relation 4651. Up to 474 conditions per place. [2024-06-04 14:41:38,689 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 60 changer transitions 15/194 dead transitions. [2024-06-04 14:41:38,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 194 transitions, 1924 flow [2024-06-04 14:41:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 14:41:38,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 14:41:38,690 INFO L175 Difference]: Start difference. First operand has 261 places, 173 transitions, 1478 flow. Second operand 12 states and 135 transitions. [2024-06-04 14:41:38,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 194 transitions, 1924 flow [2024-06-04 14:41:38,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 194 transitions, 1786 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:41:38,845 INFO L231 Difference]: Finished difference. Result has 256 places, 164 transitions, 1398 flow [2024-06-04 14:41:38,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1398, PETRI_PLACES=256, PETRI_TRANSITIONS=164} [2024-06-04 14:41:38,846 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-04 14:41:38,846 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 164 transitions, 1398 flow [2024-06-04 14:41:38,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:38,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:38,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:38,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-04 14:41:38,846 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)] === [2024-06-04 14:41:38,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:38,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1175617845, now seen corresponding path program 5 times [2024-06-04 14:41:38,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:38,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248786477] [2024-06-04 14:41:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:38,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:41,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:41,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248786477] [2024-06-04 14:41:41,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248786477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:41,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:41,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:41,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286270790] [2024-06-04 14:41:41,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:41,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:41,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:41,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:41,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:41,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:41,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 164 transitions, 1398 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:41,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:41,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:41,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:41,834 INFO L124 PetriNetUnfolderBase]: 394/841 cut-off events. [2024-06-04 14:41:41,834 INFO L125 PetriNetUnfolderBase]: For 88974/88974 co-relation queries the response was YES. [2024-06-04 14:41:41,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4529 conditions, 841 events. 394/841 cut-off events. For 88974/88974 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4630 event pairs, 87 based on Foata normal form. 6/846 useless extension candidates. Maximal degree in co-relation 4429. Up to 470 conditions per place. [2024-06-04 14:41:41,843 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 44 changer transitions 33/184 dead transitions. [2024-06-04 14:41:41,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 184 transitions, 1822 flow [2024-06-04 14:41:41,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 14:41:41,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:41:41,844 INFO L175 Difference]: Start difference. First operand has 256 places, 164 transitions, 1398 flow. Second operand 12 states and 132 transitions. [2024-06-04 14:41:41,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 184 transitions, 1822 flow [2024-06-04 14:41:41,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 184 transitions, 1692 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-04 14:41:41,997 INFO L231 Difference]: Finished difference. Result has 246 places, 144 transitions, 1197 flow [2024-06-04 14:41:41,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1197, PETRI_PLACES=246, PETRI_TRANSITIONS=144} [2024-06-04 14:41:41,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-04 14:41:41,998 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 144 transitions, 1197 flow [2024-06-04 14:41:41,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:41,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:41,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:41,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-04 14:41:41,998 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)] === [2024-06-04 14:41:41,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:41,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1537599955, now seen corresponding path program 6 times [2024-06-04 14:41:41,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:41,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194585626] [2024-06-04 14:41:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:41,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:44,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:44,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194585626] [2024-06-04 14:41:44,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194585626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:44,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:44,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:44,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124720017] [2024-06-04 14:41:44,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:44,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:44,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:44,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:44,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:44,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:44,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 144 transitions, 1197 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:44,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:44,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:44,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:45,042 INFO L124 PetriNetUnfolderBase]: 349/732 cut-off events. [2024-06-04 14:41:45,042 INFO L125 PetriNetUnfolderBase]: For 60916/60916 co-relation queries the response was YES. [2024-06-04 14:41:45,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3543 conditions, 732 events. 349/732 cut-off events. For 60916/60916 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3869 event pairs, 68 based on Foata normal form. 6/737 useless extension candidates. Maximal degree in co-relation 3447. Up to 540 conditions per place. [2024-06-04 14:41:45,048 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 32 changer transitions 18/163 dead transitions. [2024-06-04 14:41:45,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 163 transitions, 1579 flow [2024-06-04 14:41:45,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:41:45,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 14:41:45,049 INFO L175 Difference]: Start difference. First operand has 246 places, 144 transitions, 1197 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:41:45,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 163 transitions, 1579 flow [2024-06-04 14:41:45,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 163 transitions, 1428 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-06-04 14:41:45,171 INFO L231 Difference]: Finished difference. Result has 219 places, 135 transitions, 1049 flow [2024-06-04 14:41:45,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1049, PETRI_PLACES=219, PETRI_TRANSITIONS=135} [2024-06-04 14:41:45,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-04 14:41:45,173 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 135 transitions, 1049 flow [2024-06-04 14:41:45,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:45,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:45,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:45,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-04 14:41:45,174 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)] === [2024-06-04 14:41:45,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:45,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1214207931, now seen corresponding path program 7 times [2024-06-04 14:41:45,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:45,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226042471] [2024-06-04 14:41:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:45,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:47,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:47,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226042471] [2024-06-04 14:41:47,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226042471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:47,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:47,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:47,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157812634] [2024-06-04 14:41:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:47,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:47,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:47,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 135 transitions, 1049 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:47,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:47,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:47,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:47,779 INFO L124 PetriNetUnfolderBase]: 333/696 cut-off events. [2024-06-04 14:41:47,779 INFO L125 PetriNetUnfolderBase]: For 50763/50763 co-relation queries the response was YES. [2024-06-04 14:41:47,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 696 events. 333/696 cut-off events. For 50763/50763 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3611 event pairs, 70 based on Foata normal form. 6/701 useless extension candidates. Maximal degree in co-relation 3167. Up to 578 conditions per place. [2024-06-04 14:41:47,784 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 18 changer transitions 22/153 dead transitions. [2024-06-04 14:41:47,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 153 transitions, 1401 flow [2024-06-04 14:41:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:47,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:47,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-04 14:41:47,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:41:47,785 INFO L175 Difference]: Start difference. First operand has 219 places, 135 transitions, 1049 flow. Second operand 12 states and 128 transitions. [2024-06-04 14:41:47,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 153 transitions, 1401 flow [2024-06-04 14:41:47,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 153 transitions, 1319 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 14:41:47,866 INFO L231 Difference]: Finished difference. Result has 207 places, 125 transitions, 937 flow [2024-06-04 14:41:47,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=937, PETRI_PLACES=207, PETRI_TRANSITIONS=125} [2024-06-04 14:41:47,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-04 14:41:47,866 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 125 transitions, 937 flow [2024-06-04 14:41:47,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:47,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:47,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:47,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-04 14:41:47,867 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)] === [2024-06-04 14:41:47,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash -478230821, now seen corresponding path program 8 times [2024-06-04 14:41:47,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:47,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167768574] [2024-06-04 14:41:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:47,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:49,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:49,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167768574] [2024-06-04 14:41:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167768574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:49,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918681201] [2024-06-04 14:41:49,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:49,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:50,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:50,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 125 transitions, 937 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:50,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:50,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:50,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:50,655 INFO L124 PetriNetUnfolderBase]: 313/652 cut-off events. [2024-06-04 14:41:50,655 INFO L125 PetriNetUnfolderBase]: For 45825/45825 co-relation queries the response was YES. [2024-06-04 14:41:50,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 652 events. 313/652 cut-off events. For 45825/45825 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3311 event pairs, 66 based on Foata normal form. 6/657 useless extension candidates. Maximal degree in co-relation 2915. Up to 508 conditions per place. [2024-06-04 14:41:50,660 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 28 changer transitions 13/143 dead transitions. [2024-06-04 14:41:50,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 143 transitions, 1271 flow [2024-06-04 14:41:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 14:41:50,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 14:41:50,661 INFO L175 Difference]: Start difference. First operand has 207 places, 125 transitions, 937 flow. Second operand 12 states and 129 transitions. [2024-06-04 14:41:50,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 143 transitions, 1271 flow [2024-06-04 14:41:50,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 143 transitions, 1216 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 14:41:50,723 INFO L231 Difference]: Finished difference. Result has 194 places, 120 transitions, 912 flow [2024-06-04 14:41:50,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=912, PETRI_PLACES=194, PETRI_TRANSITIONS=120} [2024-06-04 14:41:50,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-04 14:41:50,724 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 120 transitions, 912 flow [2024-06-04 14:41:50,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:50,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:50,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:50,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-04 14:41:50,724 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)] === [2024-06-04 14:41:50,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1094675945, now seen corresponding path program 9 times [2024-06-04 14:41:50,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:50,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195661919] [2024-06-04 14:41:50,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:50,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:52,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:52,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195661919] [2024-06-04 14:41:52,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195661919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:52,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:52,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:52,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935470783] [2024-06-04 14:41:52,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:52,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:52,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:52,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:52,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 120 transitions, 912 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:52,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:52,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:52,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:52,912 INFO L124 PetriNetUnfolderBase]: 297/624 cut-off events. [2024-06-04 14:41:52,912 INFO L125 PetriNetUnfolderBase]: For 38495/38495 co-relation queries the response was YES. [2024-06-04 14:41:52,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 624 events. 297/624 cut-off events. For 38495/38495 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3140 event pairs, 66 based on Foata normal form. 6/629 useless extension candidates. Maximal degree in co-relation 2767. Up to 496 conditions per place. [2024-06-04 14:41:52,916 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 22 changer transitions 16/138 dead transitions. [2024-06-04 14:41:52,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 138 transitions, 1236 flow [2024-06-04 14:41:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 14:41:52,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 14:41:52,917 INFO L175 Difference]: Start difference. First operand has 194 places, 120 transitions, 912 flow. Second operand 12 states and 129 transitions. [2024-06-04 14:41:52,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 138 transitions, 1236 flow [2024-06-04 14:41:52,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 138 transitions, 1174 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:41:52,968 INFO L231 Difference]: Finished difference. Result has 190 places, 113 transitions, 852 flow [2024-06-04 14:41:52,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=852, PETRI_PLACES=190, PETRI_TRANSITIONS=113} [2024-06-04 14:41:52,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-04 14:41:52,968 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 113 transitions, 852 flow [2024-06-04 14:41:52,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:52,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:52,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:52,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-04 14:41:52,969 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)] === [2024-06-04 14:41:52,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash -477971351, now seen corresponding path program 10 times [2024-06-04 14:41:52,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:52,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103822606] [2024-06-04 14:41:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:52,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:54,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:54,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103822606] [2024-06-04 14:41:54,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103822606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:54,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:54,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:54,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134516072] [2024-06-04 14:41:54,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:54,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:54,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:54,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 113 transitions, 852 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:54,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:54,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:54,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:55,025 INFO L124 PetriNetUnfolderBase]: 283/594 cut-off events. [2024-06-04 14:41:55,026 INFO L125 PetriNetUnfolderBase]: For 36145/36145 co-relation queries the response was YES. [2024-06-04 14:41:55,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 594 events. 283/594 cut-off events. For 36145/36145 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2914 event pairs, 64 based on Foata normal form. 6/599 useless extension candidates. Maximal degree in co-relation 2633. Up to 476 conditions per place. [2024-06-04 14:41:55,031 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 12 changer transitions 30/131 dead transitions. [2024-06-04 14:41:55,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 131 transitions, 1158 flow [2024-06-04 14:41:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:41:55,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-04 14:41:55,032 INFO L175 Difference]: Start difference. First operand has 190 places, 113 transitions, 852 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:41:55,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 131 transitions, 1158 flow [2024-06-04 14:41:55,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 131 transitions, 1083 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:41:55,106 INFO L231 Difference]: Finished difference. Result has 182 places, 98 transitions, 702 flow [2024-06-04 14:41:55,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=702, PETRI_PLACES=182, PETRI_TRANSITIONS=98} [2024-06-04 14:41:55,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-04 14:41:55,106 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 98 transitions, 702 flow [2024-06-04 14:41:55,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:55,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:55,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:55,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-04 14:41:55,107 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)] === [2024-06-04 14:41:55,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2066617547, now seen corresponding path program 11 times [2024-06-04 14:41:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:55,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265024796] [2024-06-04 14:41:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:55,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:56,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:56,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265024796] [2024-06-04 14:41:56,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265024796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:56,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:56,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:56,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765403020] [2024-06-04 14:41:56,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:56,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:56,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:57,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:57,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 98 transitions, 702 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:57,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:57,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:57,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:57,544 INFO L124 PetriNetUnfolderBase]: 258/532 cut-off events. [2024-06-04 14:41:57,544 INFO L125 PetriNetUnfolderBase]: For 32640/32640 co-relation queries the response was YES. [2024-06-04 14:41:57,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 532 events. 258/532 cut-off events. For 32640/32640 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2536 event pairs, 60 based on Foata normal form. 6/538 useless extension candidates. Maximal degree in co-relation 2346. Up to 420 conditions per place. [2024-06-04 14:41:57,547 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 22 changer transitions 11/116 dead transitions. [2024-06-04 14:41:57,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 116 transitions, 986 flow [2024-06-04 14:41:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 14:41:57,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 14:41:57,548 INFO L175 Difference]: Start difference. First operand has 182 places, 98 transitions, 702 flow. Second operand 12 states and 129 transitions. [2024-06-04 14:41:57,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 116 transitions, 986 flow [2024-06-04 14:41:57,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 116 transitions, 914 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-06-04 14:41:57,588 INFO L231 Difference]: Finished difference. Result has 158 places, 95 transitions, 662 flow [2024-06-04 14:41:57,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=662, PETRI_PLACES=158, PETRI_TRANSITIONS=95} [2024-06-04 14:41:57,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 14:41:57,589 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 95 transitions, 662 flow [2024-06-04 14:41:57,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:57,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:57,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:57,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-04 14:41:57,589 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)] === [2024-06-04 14:41:57,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:57,590 INFO L85 PathProgramCache]: Analyzing trace with hash 815095341, now seen corresponding path program 12 times [2024-06-04 14:41:57,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:57,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843912505] [2024-06-04 14:41:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:57,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:59,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:59,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843912505] [2024-06-04 14:41:59,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843912505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:59,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:59,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:41:59,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290904801] [2024-06-04 14:41:59,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:59,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:41:59,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:59,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:41:59,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:41:59,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:41:59,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 95 transitions, 662 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:59,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:59,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:41:59,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:59,785 INFO L124 PetriNetUnfolderBase]: 248/514 cut-off events. [2024-06-04 14:41:59,785 INFO L125 PetriNetUnfolderBase]: For 25446/25446 co-relation queries the response was YES. [2024-06-04 14:41:59,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 514 events. 248/514 cut-off events. For 25446/25446 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2434 event pairs, 50 based on Foata normal form. 6/520 useless extension candidates. Maximal degree in co-relation 2208. Up to 324 conditions per place. [2024-06-04 14:41:59,788 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 60 selfloop transitions, 36 changer transitions 14/112 dead transitions. [2024-06-04 14:41:59,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 112 transitions, 932 flow [2024-06-04 14:41:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 14:41:59,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 14:41:59,789 INFO L175 Difference]: Start difference. First operand has 158 places, 95 transitions, 662 flow. Second operand 12 states and 126 transitions. [2024-06-04 14:41:59,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 112 transitions, 932 flow [2024-06-04 14:41:59,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 112 transitions, 882 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:41:59,831 INFO L231 Difference]: Finished difference. Result has 154 places, 90 transitions, 660 flow [2024-06-04 14:41:59,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=660, PETRI_PLACES=154, PETRI_TRANSITIONS=90} [2024-06-04 14:41:59,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-04 14:41:59,831 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 90 transitions, 660 flow [2024-06-04 14:41:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:59,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:59,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:59,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-04 14:41:59,832 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)] === [2024-06-04 14:41:59,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1462414731, now seen corresponding path program 13 times [2024-06-04 14:41:59,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369618242] [2024-06-04 14:41:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:01,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:01,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369618242] [2024-06-04 14:42:01,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369618242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:01,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:01,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:01,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289236427] [2024-06-04 14:42:01,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:01,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:01,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:01,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:01,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:01,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 90 transitions, 660 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:01,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:01,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:01,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:02,088 INFO L124 PetriNetUnfolderBase]: 238/492 cut-off events. [2024-06-04 14:42:02,088 INFO L125 PetriNetUnfolderBase]: For 23628/23628 co-relation queries the response was YES. [2024-06-04 14:42:02,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2220 conditions, 492 events. 238/492 cut-off events. For 23628/23628 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2265 event pairs, 56 based on Foata normal form. 6/498 useless extension candidates. Maximal degree in co-relation 2158. Up to 395 conditions per place. [2024-06-04 14:42:02,090 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 73 selfloop transitions, 20 changer transitions 12/107 dead transitions. [2024-06-04 14:42:02,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 107 transitions, 918 flow [2024-06-04 14:42:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:42:02,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-04 14:42:02,092 INFO L175 Difference]: Start difference. First operand has 154 places, 90 transitions, 660 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:42:02,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 107 transitions, 918 flow [2024-06-04 14:42:02,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 107 transitions, 838 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:02,132 INFO L231 Difference]: Finished difference. Result has 147 places, 86 transitions, 592 flow [2024-06-04 14:42:02,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=592, PETRI_PLACES=147, PETRI_TRANSITIONS=86} [2024-06-04 14:42:02,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-04 14:42:02,133 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 86 transitions, 592 flow [2024-06-04 14:42:02,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:02,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:02,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:02,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-04 14:42:02,133 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)] === [2024-06-04 14:42:02,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1239823131, now seen corresponding path program 14 times [2024-06-04 14:42:02,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:02,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472856603] [2024-06-04 14:42:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:02,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:04,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:04,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472856603] [2024-06-04 14:42:04,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472856603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:04,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:04,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033560896] [2024-06-04 14:42:04,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:04,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:04,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:04,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:04,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:04,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 86 transitions, 592 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:04,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:04,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:04,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:04,850 INFO L124 PetriNetUnfolderBase]: 225/469 cut-off events. [2024-06-04 14:42:04,850 INFO L125 PetriNetUnfolderBase]: For 20884/20884 co-relation queries the response was YES. [2024-06-04 14:42:04,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 469 events. 225/469 cut-off events. For 20884/20884 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2135 event pairs, 56 based on Foata normal form. 6/475 useless extension candidates. Maximal degree in co-relation 1992. Up to 319 conditions per place. [2024-06-04 14:42:04,853 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 26 changer transitions 11/103 dead transitions. [2024-06-04 14:42:04,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 103 transitions, 846 flow [2024-06-04 14:42:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:04,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:42:04,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 14:42:04,854 INFO L175 Difference]: Start difference. First operand has 147 places, 86 transitions, 592 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:42:04,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 103 transitions, 846 flow [2024-06-04 14:42:04,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 103 transitions, 802 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:42:04,884 INFO L231 Difference]: Finished difference. Result has 144 places, 83 transitions, 589 flow [2024-06-04 14:42:04,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=589, PETRI_PLACES=144, PETRI_TRANSITIONS=83} [2024-06-04 14:42:04,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-04 14:42:04,885 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 83 transitions, 589 flow [2024-06-04 14:42:04,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:04,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:04,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:04,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-04 14:42:04,885 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)] === [2024-06-04 14:42:04,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1462674201, now seen corresponding path program 15 times [2024-06-04 14:42:04,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:04,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725011453] [2024-06-04 14:42:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:06,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:06,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725011453] [2024-06-04 14:42:06,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725011453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:06,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:06,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786010647] [2024-06-04 14:42:06,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:06,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:06,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:06,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:06,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 83 transitions, 589 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:06,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:06,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:06,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:07,055 INFO L124 PetriNetUnfolderBase]: 215/451 cut-off events. [2024-06-04 14:42:07,055 INFO L125 PetriNetUnfolderBase]: For 20048/20048 co-relation queries the response was YES. [2024-06-04 14:42:07,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 451 events. 215/451 cut-off events. For 20048/20048 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2025 event pairs, 52 based on Foata normal form. 6/457 useless extension candidates. Maximal degree in co-relation 1938. Up to 357 conditions per place. [2024-06-04 14:42:07,057 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 66 selfloop transitions, 17 changer transitions 15/100 dead transitions. [2024-06-04 14:42:07,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 100 transitions, 831 flow [2024-06-04 14:42:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:07,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 14:42:07,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 14:42:07,058 INFO L175 Difference]: Start difference. First operand has 144 places, 83 transitions, 589 flow. Second operand 12 states and 126 transitions. [2024-06-04 14:42:07,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 100 transitions, 831 flow [2024-06-04 14:42:07,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 100 transitions, 773 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:07,088 INFO L231 Difference]: Finished difference. Result has 140 places, 78 transitions, 531 flow [2024-06-04 14:42:07,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=531, PETRI_PLACES=140, PETRI_TRANSITIONS=78} [2024-06-04 14:42:07,088 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-04 14:42:07,088 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 78 transitions, 531 flow [2024-06-04 14:42:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:07,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:07,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:07,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-04 14:42:07,089 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)] === [2024-06-04 14:42:07,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2106252845, now seen corresponding path program 16 times [2024-06-04 14:42:07,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:07,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884737064] [2024-06-04 14:42:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:07,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:08,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:08,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884737064] [2024-06-04 14:42:08,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884737064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:08,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:08,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:08,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654047227] [2024-06-04 14:42:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:08,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:08,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:09,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:09,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 78 transitions, 531 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:09,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:09,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:09,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:09,448 INFO L124 PetriNetUnfolderBase]: 200/422 cut-off events. [2024-06-04 14:42:09,448 INFO L125 PetriNetUnfolderBase]: For 18340/18340 co-relation queries the response was YES. [2024-06-04 14:42:09,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 422 events. 200/422 cut-off events. For 18340/18340 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1832 event pairs, 50 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1796. Up to 340 conditions per place. [2024-06-04 14:42:09,451 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 12 changer transitions 17/95 dead transitions. [2024-06-04 14:42:09,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 95 transitions, 761 flow [2024-06-04 14:42:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-04 14:42:09,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-04 14:42:09,452 INFO L175 Difference]: Start difference. First operand has 140 places, 78 transitions, 531 flow. Second operand 12 states and 124 transitions. [2024-06-04 14:42:09,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 95 transitions, 761 flow [2024-06-04 14:42:09,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 95 transitions, 719 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:09,476 INFO L231 Difference]: Finished difference. Result has 134 places, 73 transitions, 493 flow [2024-06-04 14:42:09,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=493, PETRI_PLACES=134, PETRI_TRANSITIONS=73} [2024-06-04 14:42:09,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-04 14:42:09,476 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 73 transitions, 493 flow [2024-06-04 14:42:09,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:09,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:09,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:09,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-04 14:42:09,477 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)] === [2024-06-04 14:42:09,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash -764971381, now seen corresponding path program 17 times [2024-06-04 14:42:09,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:09,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266329992] [2024-06-04 14:42:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:09,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:11,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:11,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266329992] [2024-06-04 14:42:11,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266329992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:11,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:11,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711486909] [2024-06-04 14:42:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:11,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:11,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:11,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:11,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 73 transitions, 493 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:11,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:11,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:11,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:11,610 INFO L124 PetriNetUnfolderBase]: 184/390 cut-off events. [2024-06-04 14:42:11,610 INFO L125 PetriNetUnfolderBase]: For 16726/16726 co-relation queries the response was YES. [2024-06-04 14:42:11,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 390 events. 184/390 cut-off events. For 16726/16726 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1649 event pairs, 44 based on Foata normal form. 6/396 useless extension candidates. Maximal degree in co-relation 1670. Up to 312 conditions per place. [2024-06-04 14:42:11,612 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 61 selfloop transitions, 11 changer transitions 15/89 dead transitions. [2024-06-04 14:42:11,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 89 transitions, 705 flow [2024-06-04 14:42:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:42:11,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:42:11,613 INFO L175 Difference]: Start difference. First operand has 134 places, 73 transitions, 493 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:42:11,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 89 transitions, 705 flow [2024-06-04 14:42:11,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 89 transitions, 673 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:42:11,629 INFO L231 Difference]: Finished difference. Result has 127 places, 68 transitions, 458 flow [2024-06-04 14:42:11,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=458, PETRI_PLACES=127, PETRI_TRANSITIONS=68} [2024-06-04 14:42:11,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-04 14:42:11,629 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 68 transitions, 458 flow [2024-06-04 14:42:11,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:11,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:11,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:11,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-04 14:42:11,630 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)] === [2024-06-04 14:42:11,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:11,630 INFO L85 PathProgramCache]: Analyzing trace with hash -860289575, now seen corresponding path program 18 times [2024-06-04 14:42:11,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:11,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682259527] [2024-06-04 14:42:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:13,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:13,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682259527] [2024-06-04 14:42:13,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682259527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:13,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:13,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:13,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875156043] [2024-06-04 14:42:13,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:13,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:13,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:13,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:13,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:13,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:13,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 68 transitions, 458 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:13,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:13,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:13,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:13,687 INFO L124 PetriNetUnfolderBase]: 168/362 cut-off events. [2024-06-04 14:42:13,688 INFO L125 PetriNetUnfolderBase]: For 14472/14472 co-relation queries the response was YES. [2024-06-04 14:42:13,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 362 events. 168/362 cut-off events. For 14472/14472 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1510 event pairs, 42 based on Foata normal form. 6/368 useless extension candidates. Maximal degree in co-relation 1552. Up to 281 conditions per place. [2024-06-04 14:42:13,689 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 6 changer transitions 23/84 dead transitions. [2024-06-04 14:42:13,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 84 transitions, 664 flow [2024-06-04 14:42:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:13,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-04 14:42:13,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-04 14:42:13,690 INFO L175 Difference]: Start difference. First operand has 127 places, 68 transitions, 458 flow. Second operand 12 states and 119 transitions. [2024-06-04 14:42:13,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 84 transitions, 664 flow [2024-06-04 14:42:13,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 84 transitions, 634 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:13,705 INFO L231 Difference]: Finished difference. Result has 121 places, 58 transitions, 381 flow [2024-06-04 14:42:13,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=381, PETRI_PLACES=121, PETRI_TRANSITIONS=58} [2024-06-04 14:42:13,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-04 14:42:13,705 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 58 transitions, 381 flow [2024-06-04 14:42:13,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:13,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:13,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:13,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-04 14:42:13,706 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)] === [2024-06-04 14:42:13,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash 443666857, now seen corresponding path program 19 times [2024-06-04 14:42:13,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:13,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829950959] [2024-06-04 14:42:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:13,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:15,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:15,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829950959] [2024-06-04 14:42:15,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829950959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:15,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:15,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:15,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772734230] [2024-06-04 14:42:15,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:15,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:15,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:15,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:15,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 58 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:15,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:15,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:15,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:15,737 INFO L124 PetriNetUnfolderBase]: 146/316 cut-off events. [2024-06-04 14:42:15,737 INFO L125 PetriNetUnfolderBase]: For 12336/12336 co-relation queries the response was YES. [2024-06-04 14:42:15,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 316 events. 146/316 cut-off events. For 12336/12336 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1253 event pairs, 40 based on Foata normal form. 6/322 useless extension candidates. Maximal degree in co-relation 1354. Up to 240 conditions per place. [2024-06-04 14:42:15,739 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 47 selfloop transitions, 12 changer transitions 12/73 dead transitions. [2024-06-04 14:42:15,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 73 transitions, 561 flow [2024-06-04 14:42:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:42:15,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:42:15,740 INFO L175 Difference]: Start difference. First operand has 121 places, 58 transitions, 381 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:42:15,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 73 transitions, 561 flow [2024-06-04 14:42:15,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 73 transitions, 507 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-06-04 14:42:15,750 INFO L231 Difference]: Finished difference. Result has 106 places, 54 transitions, 331 flow [2024-06-04 14:42:15,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=331, PETRI_PLACES=106, PETRI_TRANSITIONS=54} [2024-06-04 14:42:15,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-04 14:42:15,750 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 54 transitions, 331 flow [2024-06-04 14:42:15,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:15,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:15,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:15,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-04 14:42:15,751 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)] === [2024-06-04 14:42:15,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:15,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1078567671, now seen corresponding path program 20 times [2024-06-04 14:42:15,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:15,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157530275] [2024-06-04 14:42:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:15,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:17,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:17,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157530275] [2024-06-04 14:42:17,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157530275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:17,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:17,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:17,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842991864] [2024-06-04 14:42:17,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:17,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:17,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:17,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:17,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:17,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:17,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 54 transitions, 331 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:17,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:17,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:17,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:17,735 INFO L124 PetriNetUnfolderBase]: 133/293 cut-off events. [2024-06-04 14:42:17,735 INFO L125 PetriNetUnfolderBase]: For 9784/9784 co-relation queries the response was YES. [2024-06-04 14:42:17,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 293 events. 133/293 cut-off events. For 9784/9784 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1123 event pairs, 38 based on Foata normal form. 6/299 useless extension candidates. Maximal degree in co-relation 1202. Up to 220 conditions per place. [2024-06-04 14:42:17,737 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 9 changer transitions 15/69 dead transitions. [2024-06-04 14:42:17,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 69 transitions, 499 flow [2024-06-04 14:42:17,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-04 14:42:17,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-04 14:42:17,738 INFO L175 Difference]: Start difference. First operand has 106 places, 54 transitions, 331 flow. Second operand 12 states and 119 transitions. [2024-06-04 14:42:17,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 69 transitions, 499 flow [2024-06-04 14:42:17,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 69 transitions, 469 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:17,746 INFO L231 Difference]: Finished difference. Result has 102 places, 48 transitions, 285 flow [2024-06-04 14:42:17,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=285, PETRI_PLACES=102, PETRI_TRANSITIONS=48} [2024-06-04 14:42:17,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-04 14:42:17,746 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 48 transitions, 285 flow [2024-06-04 14:42:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:17,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:17,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:17,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-04 14:42:17,747 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)] === [2024-06-04 14:42:17,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1913254539, now seen corresponding path program 21 times [2024-06-04 14:42:17,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:17,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951058114] [2024-06-04 14:42:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:17,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:19,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:19,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951058114] [2024-06-04 14:42:19,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951058114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:19,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:19,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:19,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672458401] [2024-06-04 14:42:19,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:19,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:19,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:19,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:19,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:19,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 48 transitions, 285 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:19,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:19,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:19,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:19,938 INFO L124 PetriNetUnfolderBase]: 118/264 cut-off events. [2024-06-04 14:42:19,938 INFO L125 PetriNetUnfolderBase]: For 8614/8614 co-relation queries the response was YES. [2024-06-04 14:42:19,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 264 events. 118/264 cut-off events. For 8614/8614 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 968 event pairs, 36 based on Foata normal form. 6/270 useless extension candidates. Maximal degree in co-relation 1078. Up to 193 conditions per place. [2024-06-04 14:42:19,939 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 41 selfloop transitions, 10 changer transitions 11/64 dead transitions. [2024-06-04 14:42:19,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 64 transitions, 449 flow [2024-06-04 14:42:19,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:19,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 14:42:19,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 14:42:19,940 INFO L175 Difference]: Start difference. First operand has 102 places, 48 transitions, 285 flow. Second operand 12 states and 120 transitions. [2024-06-04 14:42:19,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 64 transitions, 449 flow [2024-06-04 14:42:19,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 64 transitions, 395 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 14:42:19,946 INFO L231 Difference]: Finished difference. Result has 94 places, 45 transitions, 246 flow [2024-06-04 14:42:19,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=246, PETRI_PLACES=94, PETRI_TRANSITIONS=45} [2024-06-04 14:42:19,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-04 14:42:19,947 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 45 transitions, 246 flow [2024-06-04 14:42:19,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:19,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:19,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:19,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-04 14:42:19,947 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)] === [2024-06-04 14:42:19,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:19,948 INFO L85 PathProgramCache]: Analyzing trace with hash 452863627, now seen corresponding path program 22 times [2024-06-04 14:42:19,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:19,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232223462] [2024-06-04 14:42:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:19,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:21,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:21,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232223462] [2024-06-04 14:42:21,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232223462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:21,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:21,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272860686] [2024-06-04 14:42:21,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:21,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:21,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:21,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:21,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:21,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:21,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 45 transitions, 246 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:21,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:21,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:21,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:22,274 INFO L124 PetriNetUnfolderBase]: 108/246 cut-off events. [2024-06-04 14:42:22,274 INFO L125 PetriNetUnfolderBase]: For 7518/7518 co-relation queries the response was YES. [2024-06-04 14:42:22,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 246 events. 108/246 cut-off events. For 7518/7518 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 892 event pairs, 32 based on Foata normal form. 6/252 useless extension candidates. Maximal degree in co-relation 976. Up to 176 conditions per place. [2024-06-04 14:42:22,275 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 35 selfloop transitions, 7 changer transitions 17/61 dead transitions. [2024-06-04 14:42:22,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 61 transitions, 398 flow [2024-06-04 14:42:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-04 14:42:22,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-04 14:42:22,276 INFO L175 Difference]: Start difference. First operand has 94 places, 45 transitions, 246 flow. Second operand 12 states and 118 transitions. [2024-06-04 14:42:22,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 61 transitions, 398 flow [2024-06-04 14:42:22,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 61 transitions, 372 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:22,282 INFO L231 Difference]: Finished difference. Result has 90 places, 40 transitions, 216 flow [2024-06-04 14:42:22,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=216, PETRI_PLACES=90, PETRI_TRANSITIONS=40} [2024-06-04 14:42:22,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-04 14:42:22,282 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 40 transitions, 216 flow [2024-06-04 14:42:22,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:22,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:22,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:22,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-04 14:42:22,283 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)] === [2024-06-04 14:42:22,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1362705413, now seen corresponding path program 23 times [2024-06-04 14:42:22,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:22,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527840517] [2024-06-04 14:42:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:22,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:24,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:24,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527840517] [2024-06-04 14:42:24,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527840517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:24,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:24,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:24,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705107642] [2024-06-04 14:42:24,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:24,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:24,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:24,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:24,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:24,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:24,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 40 transitions, 216 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:24,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:24,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:24,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:24,561 INFO L124 PetriNetUnfolderBase]: 92/214 cut-off events. [2024-06-04 14:42:24,562 INFO L125 PetriNetUnfolderBase]: For 6504/6504 co-relation queries the response was YES. [2024-06-04 14:42:24,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 214 events. 92/214 cut-off events. For 6504/6504 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 727 event pairs, 21 based on Foata normal form. 6/220 useless extension candidates. Maximal degree in co-relation 864. Up to 128 conditions per place. [2024-06-04 14:42:24,562 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 31 selfloop transitions, 12 changer transitions 10/55 dead transitions. [2024-06-04 14:42:24,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 55 transitions, 354 flow [2024-06-04 14:42:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-04 14:42:24,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-04 14:42:24,563 INFO L175 Difference]: Start difference. First operand has 90 places, 40 transitions, 216 flow. Second operand 12 states and 118 transitions. [2024-06-04 14:42:24,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 55 transitions, 354 flow [2024-06-04 14:42:24,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 55 transitions, 332 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:42:24,568 INFO L231 Difference]: Finished difference. Result has 83 places, 36 transitions, 202 flow [2024-06-04 14:42:24,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=202, PETRI_PLACES=83, PETRI_TRANSITIONS=36} [2024-06-04 14:42:24,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-04 14:42:24,569 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 36 transitions, 202 flow [2024-06-04 14:42:24,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:24,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:24,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:24,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-04 14:42:24,570 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)] === [2024-06-04 14:42:24,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1564054133, now seen corresponding path program 24 times [2024-06-04 14:42:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:24,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668401632] [2024-06-04 14:42:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:26,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668401632] [2024-06-04 14:42:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668401632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390574435] [2024-06-04 14:42:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:26,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:26,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:26,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:26,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 36 transitions, 202 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:26,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:26,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:26,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:26,746 INFO L124 PetriNetUnfolderBase]: 65/157 cut-off events. [2024-06-04 14:42:26,747 INFO L125 PetriNetUnfolderBase]: For 3440/3440 co-relation queries the response was YES. [2024-06-04 14:42:26,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 157 events. 65/157 cut-off events. For 3440/3440 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 458 event pairs, 17 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 560. Up to 91 conditions per place. [2024-06-04 14:42:26,747 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 24 selfloop transitions, 7 changer transitions 17/50 dead transitions. [2024-06-04 14:42:26,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 50 transitions, 328 flow [2024-06-04 14:42:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-04 14:42:26,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-04 14:42:26,748 INFO L175 Difference]: Start difference. First operand has 83 places, 36 transitions, 202 flow. Second operand 12 states and 115 transitions. [2024-06-04 14:42:26,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 50 transitions, 328 flow [2024-06-04 14:42:26,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 50 transitions, 296 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 14:42:26,751 INFO L231 Difference]: Finished difference. Result has 77 places, 30 transitions, 159 flow [2024-06-04 14:42:26,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=159, PETRI_PLACES=77, PETRI_TRANSITIONS=30} [2024-06-04 14:42:26,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-04 14:42:26,751 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 30 transitions, 159 flow [2024-06-04 14:42:26,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:26,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:26,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-04 14:42:26,752 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)] === [2024-06-04 14:42:26,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:26,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1913514009, now seen corresponding path program 25 times [2024-06-04 14:42:26,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:26,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828203390] [2024-06-04 14:42:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:26,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:29,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:29,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828203390] [2024-06-04 14:42:29,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828203390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:29,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:29,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:29,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290413079] [2024-06-04 14:42:29,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:29,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:29,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:29,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:29,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:29,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:29,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 30 transitions, 159 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:29,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:29,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:29,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:30,007 INFO L124 PetriNetUnfolderBase]: 54/132 cut-off events. [2024-06-04 14:42:30,007 INFO L125 PetriNetUnfolderBase]: For 2626/2626 co-relation queries the response was YES. [2024-06-04 14:42:30,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 132 events. 54/132 cut-off events. For 2626/2626 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 15 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 460. Up to 67 conditions per place. [2024-06-04 14:42:30,008 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 4 changer transitions 20/45 dead transitions. [2024-06-04 14:42:30,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 45 transitions, 277 flow [2024-06-04 14:42:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-04 14:42:30,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-04 14:42:30,009 INFO L175 Difference]: Start difference. First operand has 77 places, 30 transitions, 159 flow. Second operand 12 states and 116 transitions. [2024-06-04 14:42:30,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 45 transitions, 277 flow [2024-06-04 14:42:30,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 45 transitions, 251 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:30,010 INFO L231 Difference]: Finished difference. Result has 66 places, 23 transitions, 112 flow [2024-06-04 14:42:30,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=112, PETRI_PLACES=66, PETRI_TRANSITIONS=23} [2024-06-04 14:42:30,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 14:42:30,011 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 23 transitions, 112 flow [2024-06-04 14:42:30,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:30,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:30,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:30,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-04 14:42:30,011 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)] === [2024-06-04 14:42:30,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:30,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1240082601, now seen corresponding path program 26 times [2024-06-04 14:42:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:30,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436369133] [2024-06-04 14:42:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:31,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436369133] [2024-06-04 14:42:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436369133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:31,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:31,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:42:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053263636] [2024-06-04 14:42:31,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:31,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:42:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:31,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:42:31,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:42:31,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 14:42:31,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 23 transitions, 112 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:31,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:31,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 14:42:31,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:31,911 INFO L124 PetriNetUnfolderBase]: 24/66 cut-off events. [2024-06-04 14:42:31,912 INFO L125 PetriNetUnfolderBase]: For 764/764 co-relation queries the response was YES. [2024-06-04 14:42:31,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 66 events. 24/66 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 6/72 useless extension candidates. Maximal degree in co-relation 168. Up to 24 conditions per place. [2024-06-04 14:42:31,912 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-04 14:42:31,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 32 transitions, 158 flow [2024-06-04 14:42:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-06-04 14:42:31,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2682291666666667 [2024-06-04 14:42:31,913 INFO L175 Difference]: Start difference. First operand has 66 places, 23 transitions, 112 flow. Second operand 12 states and 103 transitions. [2024-06-04 14:42:31,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 32 transitions, 158 flow [2024-06-04 14:42:31,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-04 14:42:31,913 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-04 14:42:31,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-04 14:42:31,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-04 14:42:31,914 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-04 14:42:31,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:31,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 14:42:31,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 14:42:31,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 14:42:31,922 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 14:42:31,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-04 14:42:31,922 INFO L445 BasicCegarLoop]: Path program histogram: [45, 33, 26, 24, 21, 18, 15, 10, 8, 6, 6, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:31,925 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:42:31,925 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:42:31,928 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 14:42:31,928 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 14:42:31,929 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:42:31 BasicIcfg [2024-06-04 14:42:31,929 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:42:31,931 INFO L158 Benchmark]: Toolchain (without parser) took 616514.13ms. Allocated memory was 172.0MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 95.1MB in the beginning and 1.1GB in the end (delta: -979.0MB). Peak memory consumption was 935.3MB. Max. memory is 16.1GB. [2024-06-04 14:42:31,932 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:42:31,933 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:42:31,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.04ms. Allocated memory is still 172.0MB. Free memory was 94.8MB in the beginning and 111.1MB in the end (delta: -16.3MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-06-04 14:42:31,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.67ms. Allocated memory is still 172.0MB. Free memory was 111.1MB in the beginning and 108.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:42:31,934 INFO L158 Benchmark]: Boogie Preprocessor took 46.01ms. Allocated memory is still 172.0MB. Free memory was 108.2MB in the beginning and 104.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 14:42:31,934 INFO L158 Benchmark]: RCFGBuilder took 610.05ms. Allocated memory is still 172.0MB. Free memory was 104.3MB in the beginning and 136.3MB in the end (delta: -32.0MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2024-06-04 14:42:31,934 INFO L158 Benchmark]: TraceAbstraction took 615170.55ms. Allocated memory was 172.0MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 136.0MB in the beginning and 1.1GB in the end (delta: -938.1MB). Peak memory consumption was 975.6MB. Max. memory is 16.1GB. [2024-06-04 14:42:31,935 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.04ms. Allocated memory is still 172.0MB. Free memory was 94.8MB in the beginning and 111.1MB in the end (delta: -16.3MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.67ms. Allocated memory is still 172.0MB. Free memory was 111.1MB in the beginning and 108.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.01ms. Allocated memory is still 172.0MB. Free memory was 108.2MB in the beginning and 104.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 610.05ms. Allocated memory is still 172.0MB. Free memory was 104.3MB in the beginning and 136.3MB in the end (delta: -32.0MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. * TraceAbstraction took 615170.55ms. Allocated memory was 172.0MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 136.0MB in the beginning and 1.1GB in the end (delta: -938.1MB). Peak memory consumption was 975.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 615.1s, OverallIterations: 244, TraceHistogramMax: 1, PathProgramHistogramMax: 45, EmptinessCheckTime: 0.0s, AutomataDifference: 276.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16879 SdHoareTripleChecker+Valid, 79.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14588 mSDsluCounter, 6001 SdHoareTripleChecker+Invalid, 69.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5244 mSDsCounter, 4161 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128184 IncrementalHoareTripleChecker+Invalid, 132345 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4161 mSolverCounterUnsat, 757 mSDtfsCounter, 128184 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3022 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 3004 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7083 ImplicationChecksByTransitivity, 92.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5772occurred in iteration=99, InterpolantAutomatonStates: 2562, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 334.8s InterpolantComputationTime, 4320 NumberOfCodeBlocks, 4320 NumberOfCodeBlocksAsserted, 244 NumberOfCheckSat, 4076 ConstructedInterpolants, 0 QuantifiedInterpolants, 199877 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 244 InterpolantComputations, 244 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 14:42:32,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE