./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi004.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/rfi004.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi004.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-7724a2d-m [2024-06-28 03:39:48,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:39:48,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:39:48,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:39:48,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:39:48,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:39:48,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:39:48,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:39:48,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:39:48,154 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:39:48,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:39:48,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:39:48,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:39:48,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:39:48,156 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:39:48,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:39:48,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:39:48,157 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:39:48,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:39:48,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:39:48,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:39:48,158 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:39:48,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:39:48,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:39:48,159 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:39:48,159 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:39:48,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:39:48,159 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:39:48,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:39:48,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:39:48,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:39:48,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:39:48,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:39:48,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:39:48,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:39:48,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:39:48,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:39:48,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:39:48,162 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:39:48,162 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:39:48,163 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:39:48,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:39:48,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:39:48,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:39:48,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:39:48,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:39:48,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:39:48,400 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:39:48,400 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:39:48,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi004.yml/witness.yml [2024-06-28 03:39:48,573 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:39:48,573 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:39:48,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-28 03:39:49,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:39:49,948 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:39:49,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-28 03:39:49,970 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50e0c5ae/82ae491b568c420c8d2ba601de59701f/FLAG9e1be7fb3 [2024-06-28 03:39:49,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50e0c5ae/82ae491b568c420c8d2ba601de59701f [2024-06-28 03:39:49,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:39:49,983 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:39:49,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:39:49,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:39:49,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:39:49,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:39:48" (1/2) ... [2024-06-28 03:39:49,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bce7d93 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:39:49, skipping insertion in model container [2024-06-28 03:39:49,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:39:48" (1/2) ... [2024-06-28 03:39:49,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1dc85c90 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:39:49, skipping insertion in model container [2024-06-28 03:39:49,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:39:49" (2/2) ... [2024-06-28 03:39:49,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bce7d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:49, skipping insertion in model container [2024-06-28 03:39:49,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:39:49" (2/2) ... [2024-06-28 03:39:49,991 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:39:50,051 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:39:50,052 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 03:39:50,052 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 03:39:50,053 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:39:50,053 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-28 03:39:50,091 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:39:50,358 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:39:50,373 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:39:50,495 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:39:50,524 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:39:50,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50 WrapperNode [2024-06-28 03:39:50,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:39:50,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:39:50,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:39:50,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:39:50,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,570 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 121 [2024-06-28 03:39:50,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:39:50,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:39:50,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:39:50,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:39:50,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,606 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]. [2024-06-28 03:39:50,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:39:50,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:39:50,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:39:50,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:39:50,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (1/1) ... [2024-06-28 03:39:50,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:39:50,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:39:50,692 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) [2024-06-28 03:39:50,743 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 [2024-06-28 03:39:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:39:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:39:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:39:50,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:39:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:39:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:39:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:39:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:39:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:39:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:39:50,770 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:39:50,863 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:39:50,865 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:39:51,105 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:39:51,106 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:39:51,265 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:39:51,265 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:39:51,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:39:51 BoogieIcfgContainer [2024-06-28 03:39:51,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:39:51,269 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:39:51,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:39:51,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:39:51,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:39:48" (1/4) ... [2024-06-28 03:39:51,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e255d39 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:39:51, skipping insertion in model container [2024-06-28 03:39:51,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:39:49" (2/4) ... [2024-06-28 03:39:51,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e255d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:39:51, skipping insertion in model container [2024-06-28 03:39:51,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:50" (3/4) ... [2024-06-28 03:39:51,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e255d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:39:51, skipping insertion in model container [2024-06-28 03:39:51,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:39:51" (4/4) ... [2024-06-28 03:39:51,277 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-28 03:39:51,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:39:51,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:39:51,290 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:39:51,322 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:39:51,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 03:39:51,362 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-28 03:39:51,362 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:39:51,364 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 44 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. [2024-06-28 03:39:51,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 03:39:51,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-28 03:39:51,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:39:51,377 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;@6b66083a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:39:51,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:39:51,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:39:51,379 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:39:51,380 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:39:51,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:51,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:39:51,380 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)] === [2024-06-28 03:39:51,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash 329103778, now seen corresponding path program 1 times [2024-06-28 03:39:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:51,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878170916] [2024-06-28 03:39:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:52,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:52,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878170916] [2024-06-28 03:39:52,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878170916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:52,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:52,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:39:52,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687398076] [2024-06-28 03:39:52,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:52,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:39:52,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:52,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:39:52,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:39:52,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-06-28 03:39:52,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:52,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-06-28 03:39:52,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:52,430 INFO L124 PetriNetUnfolderBase]: 131/269 cut-off events. [2024-06-28 03:39:52,430 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 03:39:52,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 269 events. 131/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1071 event pairs, 75 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-28 03:39:52,434 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 20 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-28 03:39:52,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 115 flow [2024-06-28 03:39:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:39:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:39:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-28 03:39:52,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-28 03:39:52,443 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 61 transitions. [2024-06-28 03:39:52,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 115 flow [2024-06-28 03:39:52,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:52,446 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-28 03:39:52,448 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} [2024-06-28 03:39:52,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-28 03:39:52,450 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-28 03:39:52,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:52,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:52,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:39:52,451 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)] === [2024-06-28 03:39:52,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:52,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1558109713, now seen corresponding path program 1 times [2024-06-28 03:39:52,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:52,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574366889] [2024-06-28 03:39:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:52,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:52,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:52,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574366889] [2024-06-28 03:39:52,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574366889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:52,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:52,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:39:52,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774539689] [2024-06-28 03:39:52,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:52,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:39:52,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:39:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:39:52,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-28 03:39:52,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:52,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-28 03:39:52,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:52,990 INFO L124 PetriNetUnfolderBase]: 147/286 cut-off events. [2024-06-28 03:39:52,990 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-06-28 03:39:52,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 286 events. 147/286 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1095 event pairs, 59 based on Foata normal form. 4/286 useless extension candidates. Maximal degree in co-relation 634. Up to 244 conditions per place. [2024-06-28 03:39:52,992 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-28 03:39:52,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 163 flow [2024-06-28 03:39:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:39:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:39:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-06-28 03:39:52,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015625 [2024-06-28 03:39:52,994 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 77 transitions. [2024-06-28 03:39:52,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 163 flow [2024-06-28 03:39:52,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:39:52,995 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-28 03:39:52,995 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} [2024-06-28 03:39:52,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 03:39:52,996 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-28 03:39:52,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:52,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:52,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:39:52,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:52,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:52,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2147284969, now seen corresponding path program 1 times [2024-06-28 03:39:52,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:52,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797702009] [2024-06-28 03:39:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:52,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:53,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:53,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797702009] [2024-06-28 03:39:53,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797702009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:53,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:53,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:39:53,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533635307] [2024-06-28 03:39:53,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:53,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:39:53,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:53,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:39:53,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:39:53,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-28 03:39:53,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:53,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:53,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-28 03:39:53,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:53,659 INFO L124 PetriNetUnfolderBase]: 123/252 cut-off events. [2024-06-28 03:39:53,659 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-06-28 03:39:53,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 252 events. 123/252 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 970 event pairs, 62 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 617. Up to 219 conditions per place. [2024-06-28 03:39:53,661 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 23 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-28 03:39:53,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 173 flow [2024-06-28 03:39:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:39:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:39:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-28 03:39:53,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 03:39:53,663 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-28 03:39:53,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 173 flow [2024-06-28 03:39:53,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:53,664 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-28 03:39:53,664 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-28 03:39:53,665 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-28 03:39:53,665 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-28 03:39:53,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:53,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:53,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:53,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:39:53,666 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)] === [2024-06-28 03:39:53,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash 260036671, now seen corresponding path program 1 times [2024-06-28 03:39:53,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:53,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759212078] [2024-06-28 03:39:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:53,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:54,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:54,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759212078] [2024-06-28 03:39:54,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759212078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:54,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:54,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:39:54,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762593158] [2024-06-28 03:39:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:54,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:39:54,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:39:54,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:39:54,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-28 03:39:54,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:54,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-28 03:39:54,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:54,748 INFO L124 PetriNetUnfolderBase]: 141/279 cut-off events. [2024-06-28 03:39:54,749 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-06-28 03:39:54,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 279 events. 141/279 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1078 event pairs, 24 based on Foata normal form. 4/282 useless extension candidates. Maximal degree in co-relation 733. Up to 215 conditions per place. [2024-06-28 03:39:54,751 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-28 03:39:54,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 227 flow [2024-06-28 03:39:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 03:39:54,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 03:39:54,753 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 105 transitions. [2024-06-28 03:39:54,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 227 flow [2024-06-28 03:39:54,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 216 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:54,754 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-28 03:39:54,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-28 03:39:54,755 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-28 03:39:54,755 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-28 03:39:54,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:54,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:54,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:39:54,756 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)] === [2024-06-28 03:39:54,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2141323674, now seen corresponding path program 1 times [2024-06-28 03:39:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:54,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66697821] [2024-06-28 03:39:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:54,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:55,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66697821] [2024-06-28 03:39:55,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66697821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:55,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:55,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:55,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320173392] [2024-06-28 03:39:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:55,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:55,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:55,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:39:55,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:55,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:55,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:39:55,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:55,517 INFO L124 PetriNetUnfolderBase]: 139/280 cut-off events. [2024-06-28 03:39:55,517 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-06-28 03:39:55,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 280 events. 139/280 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1078 event pairs, 41 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 797. Up to 242 conditions per place. [2024-06-28 03:39:55,519 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 26 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-28 03:39:55,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 219 flow [2024-06-28 03:39:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-06-28 03:39:55,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-28 03:39:55,521 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 85 transitions. [2024-06-28 03:39:55,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 219 flow [2024-06-28 03:39:55,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 203 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:55,523 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-28 03:39:55,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-28 03:39:55,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-28 03:39:55,524 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-28 03:39:55,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:55,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:55,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:39:55,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:55,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:55,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1019246806, now seen corresponding path program 1 times [2024-06-28 03:39:55,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:55,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322922261] [2024-06-28 03:39:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:55,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:56,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322922261] [2024-06-28 03:39:56,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322922261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:56,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:56,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:56,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442631458] [2024-06-28 03:39:56,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:56,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:56,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:56,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:56,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:56,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:39:56,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:56,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:39:56,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:56,300 INFO L124 PetriNetUnfolderBase]: 156/306 cut-off events. [2024-06-28 03:39:56,300 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-28 03:39:56,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 306 events. 156/306 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1198 event pairs, 46 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 937. Up to 255 conditions per place. [2024-06-28 03:39:56,302 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-28 03:39:56,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 258 flow [2024-06-28 03:39:56,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 03:39:56,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-28 03:39:56,303 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 89 transitions. [2024-06-28 03:39:56,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 258 flow [2024-06-28 03:39:56,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 241 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:56,305 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 162 flow [2024-06-28 03:39:56,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-28 03:39:56,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-28 03:39:56,306 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 162 flow [2024-06-28 03:39:56,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:56,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:39:56,307 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)] === [2024-06-28 03:39:56,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1956532426, now seen corresponding path program 2 times [2024-06-28 03:39:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:56,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181243112] [2024-06-28 03:39:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:56,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:56,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:56,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181243112] [2024-06-28 03:39:56,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181243112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:56,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:56,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:56,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617699549] [2024-06-28 03:39:56,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:56,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:56,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:56,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:39:56,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:56,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:39:56,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:56,974 INFO L124 PetriNetUnfolderBase]: 155/305 cut-off events. [2024-06-28 03:39:56,975 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-06-28 03:39:56,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 305 events. 155/305 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1227 event pairs, 49 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 1006. Up to 246 conditions per place. [2024-06-28 03:39:56,976 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 28 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-28 03:39:56,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 274 flow [2024-06-28 03:39:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 03:39:56,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-28 03:39:56,978 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 162 flow. Second operand 6 states and 89 transitions. [2024-06-28 03:39:56,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 274 flow [2024-06-28 03:39:56,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 257 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:56,979 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 188 flow [2024-06-28 03:39:56,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-28 03:39:56,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-28 03:39:56,980 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 188 flow [2024-06-28 03:39:56,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:56,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:56,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:39:56,981 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)] === [2024-06-28 03:39:56,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1956523498, now seen corresponding path program 1 times [2024-06-28 03:39:56,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:56,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695779050] [2024-06-28 03:39:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:56,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:57,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:57,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695779050] [2024-06-28 03:39:57,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695779050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:57,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:57,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681689919] [2024-06-28 03:39:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:57,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:57,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:57,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:57,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:57,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:39:57,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 188 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:57,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:57,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:39:57,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:57,780 INFO L124 PetriNetUnfolderBase]: 144/291 cut-off events. [2024-06-28 03:39:57,780 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-06-28 03:39:57,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 291 events. 144/291 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1147 event pairs, 39 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 990. Up to 248 conditions per place. [2024-06-28 03:39:57,782 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 31 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-28 03:39:57,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 296 flow [2024-06-28 03:39:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 03:39:57,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-28 03:39:57,785 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 188 flow. Second operand 7 states and 97 transitions. [2024-06-28 03:39:57,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 296 flow [2024-06-28 03:39:57,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 269 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:57,787 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 200 flow [2024-06-28 03:39:57,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-28 03:39:57,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-28 03:39:57,790 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 200 flow [2024-06-28 03:39:57,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:57,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:57,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:57,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:39:57,791 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)] === [2024-06-28 03:39:57,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1531878989, now seen corresponding path program 1 times [2024-06-28 03:39:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:57,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109908417] [2024-06-28 03:39:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:57,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:58,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:58,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109908417] [2024-06-28 03:39:58,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109908417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:58,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:58,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:58,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815354018] [2024-06-28 03:39:58,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:58,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:58,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:58,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:58,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 200 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) [2024-06-28 03:39:58,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:58,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:58,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:58,531 INFO L124 PetriNetUnfolderBase]: 170/325 cut-off events. [2024-06-28 03:39:58,532 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2024-06-28 03:39:58,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 325 events. 170/325 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1279 event pairs, 45 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 1169. Up to 278 conditions per place. [2024-06-28 03:39:58,534 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 39 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-28 03:39:58,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 342 flow [2024-06-28 03:39:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-28 03:39:58,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:39:58,536 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 200 flow. Second operand 7 states and 96 transitions. [2024-06-28 03:39:58,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 342 flow [2024-06-28 03:39:58,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 319 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:58,538 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 218 flow [2024-06-28 03:39:58,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-28 03:39:58,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-28 03:39:58,539 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 218 flow [2024-06-28 03:39:58,539 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) [2024-06-28 03:39:58,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:58,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:58,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:39:58,540 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)] === [2024-06-28 03:39:58,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:58,540 INFO L85 PathProgramCache]: Analyzing trace with hash -522962137, now seen corresponding path program 2 times [2024-06-28 03:39:58,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:58,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003598278] [2024-06-28 03:39:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:58,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:59,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003598278] [2024-06-28 03:39:59,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003598278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:59,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:59,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:59,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971079010] [2024-06-28 03:39:59,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:59,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:59,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:59,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:59,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:59,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 218 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) [2024-06-28 03:39:59,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:59,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:59,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:59,267 INFO L124 PetriNetUnfolderBase]: 181/346 cut-off events. [2024-06-28 03:39:59,267 INFO L125 PetriNetUnfolderBase]: For 1714/1714 co-relation queries the response was YES. [2024-06-28 03:39:59,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 346 events. 181/346 cut-off events. For 1714/1714 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1427 event pairs, 52 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1317. Up to 267 conditions per place. [2024-06-28 03:39:59,269 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-28 03:39:59,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 402 flow [2024-06-28 03:39:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-28 03:39:59,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2024-06-28 03:39:59,271 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 218 flow. Second operand 7 states and 99 transitions. [2024-06-28 03:39:59,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 402 flow [2024-06-28 03:39:59,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 377 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:59,273 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 268 flow [2024-06-28 03:39:59,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-28 03:39:59,273 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-28 03:39:59,274 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 268 flow [2024-06-28 03:39:59,274 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) [2024-06-28 03:39:59,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:59,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:59,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:39:59,274 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)] === [2024-06-28 03:39:59,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -522695227, now seen corresponding path program 3 times [2024-06-28 03:39:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:59,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930120655] [2024-06-28 03:39:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:59,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:59,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:59,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930120655] [2024-06-28 03:39:59,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930120655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:59,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:59,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:59,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359599165] [2024-06-28 03:39:59,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:59,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:59,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:59,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:59,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:59,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:39:59,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 268 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) [2024-06-28 03:39:59,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:59,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:39:59,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:00,001 INFO L124 PetriNetUnfolderBase]: 177/338 cut-off events. [2024-06-28 03:40:00,002 INFO L125 PetriNetUnfolderBase]: For 2011/2011 co-relation queries the response was YES. [2024-06-28 03:40:00,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 338 events. 177/338 cut-off events. For 2011/2011 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1384 event pairs, 49 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 1350. Up to 264 conditions per place. [2024-06-28 03:40:00,004 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 33 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2024-06-28 03:40:00,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 398 flow [2024-06-28 03:40:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:40:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:40:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 03:40:00,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-28 03:40:00,006 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 268 flow. Second operand 7 states and 97 transitions. [2024-06-28 03:40:00,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 398 flow [2024-06-28 03:40:00,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 362 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 03:40:00,009 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 273 flow [2024-06-28 03:40:00,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-28 03:40:00,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-28 03:40:00,009 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 273 flow [2024-06-28 03:40:00,010 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) [2024-06-28 03:40:00,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:00,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:00,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:40:00,010 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)] === [2024-06-28 03:40:00,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1951572715, now seen corresponding path program 1 times [2024-06-28 03:40:00,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:00,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954512715] [2024-06-28 03:40:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:00,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:00,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:00,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954512715] [2024-06-28 03:40:00,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954512715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:00,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:00,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:40:00,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705968436] [2024-06-28 03:40:00,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:00,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:40:00,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:00,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:40:00,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:40:00,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:00,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 273 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:00,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:00,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:00,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:01,080 INFO L124 PetriNetUnfolderBase]: 180/360 cut-off events. [2024-06-28 03:40:01,080 INFO L125 PetriNetUnfolderBase]: For 2347/2347 co-relation queries the response was YES. [2024-06-28 03:40:01,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 360 events. 180/360 cut-off events. For 2347/2347 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1547 event pairs, 46 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 1461. Up to 276 conditions per place. [2024-06-28 03:40:01,083 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/66 dead transitions. [2024-06-28 03:40:01,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 478 flow [2024-06-28 03:40:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-28 03:40:01,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 03:40:01,084 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 273 flow. Second operand 8 states and 116 transitions. [2024-06-28 03:40:01,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 478 flow [2024-06-28 03:40:01,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 433 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:01,087 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 342 flow [2024-06-28 03:40:01,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-06-28 03:40:01,088 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-28 03:40:01,088 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 342 flow [2024-06-28 03:40:01,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:01,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:01,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:01,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:40:01,089 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)] === [2024-06-28 03:40:01,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:01,089 INFO L85 PathProgramCache]: Analyzing trace with hash -768830461, now seen corresponding path program 2 times [2024-06-28 03:40:01,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:01,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275366687] [2024-06-28 03:40:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:01,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:01,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:01,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275366687] [2024-06-28 03:40:01,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275366687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:01,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:01,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:40:01,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490524524] [2024-06-28 03:40:01,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:01,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:40:01,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:01,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:40:01,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:40:01,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:01,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:01,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:01,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:01,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:02,039 INFO L124 PetriNetUnfolderBase]: 178/357 cut-off events. [2024-06-28 03:40:02,040 INFO L125 PetriNetUnfolderBase]: For 2704/2704 co-relation queries the response was YES. [2024-06-28 03:40:02,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1540 conditions, 357 events. 178/357 cut-off events. For 2704/2704 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1530 event pairs, 45 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1510. Up to 268 conditions per place. [2024-06-28 03:40:02,042 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2024-06-28 03:40:02,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 520 flow [2024-06-28 03:40:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:40:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:40:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-28 03:40:02,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45982142857142855 [2024-06-28 03:40:02,043 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 342 flow. Second operand 7 states and 103 transitions. [2024-06-28 03:40:02,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 520 flow [2024-06-28 03:40:02,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 488 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:40:02,050 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 383 flow [2024-06-28 03:40:02,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-28 03:40:02,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-28 03:40:02,051 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 383 flow [2024-06-28 03:40:02,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:02,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:02,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:02,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:40:02,052 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)] === [2024-06-28 03:40:02,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1143245451, now seen corresponding path program 1 times [2024-06-28 03:40:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:02,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134610712] [2024-06-28 03:40:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:02,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:02,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:02,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134610712] [2024-06-28 03:40:02,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134610712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:02,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:02,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:02,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021077375] [2024-06-28 03:40:02,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:02,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:02,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:02,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:02,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:02,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:02,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:02,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:03,002 INFO L124 PetriNetUnfolderBase]: 208/400 cut-off events. [2024-06-28 03:40:03,003 INFO L125 PetriNetUnfolderBase]: For 3340/3340 co-relation queries the response was YES. [2024-06-28 03:40:03,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 400 events. 208/400 cut-off events. For 3340/3340 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1741 event pairs, 48 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 1729. Up to 333 conditions per place. [2024-06-28 03:40:03,005 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 56 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-28 03:40:03,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 631 flow [2024-06-28 03:40:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 03:40:03,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:40:03,007 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 383 flow. Second operand 9 states and 117 transitions. [2024-06-28 03:40:03,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 631 flow [2024-06-28 03:40:03,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 574 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:03,011 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 469 flow [2024-06-28 03:40:03,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=469, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-06-28 03:40:03,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-28 03:40:03,011 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 469 flow [2024-06-28 03:40:03,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:03,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:03,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:40:03,012 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)] === [2024-06-28 03:40:03,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1946804171, now seen corresponding path program 2 times [2024-06-28 03:40:03,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:03,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237691523] [2024-06-28 03:40:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:03,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:03,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:03,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237691523] [2024-06-28 03:40:03,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237691523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:03,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:03,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:03,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948266080] [2024-06-28 03:40:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:03,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:03,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:03,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:03,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:03,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:03,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 469 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:03,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:03,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:03,859 INFO L124 PetriNetUnfolderBase]: 214/415 cut-off events. [2024-06-28 03:40:03,859 INFO L125 PetriNetUnfolderBase]: For 3238/3238 co-relation queries the response was YES. [2024-06-28 03:40:03,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 415 events. 214/415 cut-off events. For 3238/3238 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1819 event pairs, 48 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 1812. Up to 343 conditions per place. [2024-06-28 03:40:03,862 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 61 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2024-06-28 03:40:03,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 685 flow [2024-06-28 03:40:03,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 03:40:03,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:40:03,863 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 469 flow. Second operand 9 states and 120 transitions. [2024-06-28 03:40:03,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 685 flow [2024-06-28 03:40:03,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 657 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 03:40:03,868 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 504 flow [2024-06-28 03:40:03,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-06-28 03:40:03,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-28 03:40:03,868 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 504 flow [2024-06-28 03:40:03,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:03,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:03,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:40:03,869 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)] === [2024-06-28 03:40:03,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash -591333017, now seen corresponding path program 3 times [2024-06-28 03:40:03,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:03,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105610990] [2024-06-28 03:40:03,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:03,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:04,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105610990] [2024-06-28 03:40:04,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105610990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:04,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:04,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552560041] [2024-06-28 03:40:04,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:04,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:04,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:04,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 504 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:04,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:04,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:04,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:04,696 INFO L124 PetriNetUnfolderBase]: 225/431 cut-off events. [2024-06-28 03:40:04,697 INFO L125 PetriNetUnfolderBase]: For 4071/4071 co-relation queries the response was YES. [2024-06-28 03:40:04,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 431 events. 225/431 cut-off events. For 4071/4071 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1912 event pairs, 45 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1981. Up to 289 conditions per place. [2024-06-28 03:40:04,700 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 33 changer transitions 0/85 dead transitions. [2024-06-28 03:40:04,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 780 flow [2024-06-28 03:40:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-28 03:40:04,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-28 03:40:04,701 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 504 flow. Second operand 8 states and 111 transitions. [2024-06-28 03:40:04,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 780 flow [2024-06-28 03:40:04,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 709 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:04,705 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 574 flow [2024-06-28 03:40:04,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=574, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2024-06-28 03:40:04,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-28 03:40:04,706 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 574 flow [2024-06-28 03:40:04,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:04,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:04,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:04,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:40:04,708 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)] === [2024-06-28 03:40:04,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:04,708 INFO L85 PathProgramCache]: Analyzing trace with hash 976318103, now seen corresponding path program 4 times [2024-06-28 03:40:04,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:04,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690837852] [2024-06-28 03:40:04,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:04,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:05,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:05,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690837852] [2024-06-28 03:40:05,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690837852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:05,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:05,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:05,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306055109] [2024-06-28 03:40:05,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:05,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:05,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:05,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 574 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:05,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:05,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:05,528 INFO L124 PetriNetUnfolderBase]: 231/441 cut-off events. [2024-06-28 03:40:05,528 INFO L125 PetriNetUnfolderBase]: For 4681/4681 co-relation queries the response was YES. [2024-06-28 03:40:05,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2165 conditions, 441 events. 231/441 cut-off events. For 4681/4681 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1956 event pairs, 45 based on Foata normal form. 2/439 useless extension candidates. Maximal degree in co-relation 2128. Up to 295 conditions per place. [2024-06-28 03:40:05,530 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 49 selfloop transitions, 34 changer transitions 0/87 dead transitions. [2024-06-28 03:40:05,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 834 flow [2024-06-28 03:40:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 03:40:05,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-28 03:40:05,531 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 574 flow. Second operand 9 states and 122 transitions. [2024-06-28 03:40:05,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 834 flow [2024-06-28 03:40:05,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 778 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:40:05,536 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 621 flow [2024-06-28 03:40:05,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=621, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-06-28 03:40:05,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-28 03:40:05,537 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 621 flow [2024-06-28 03:40:05,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:05,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:05,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:40:05,537 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)] === [2024-06-28 03:40:05,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:05,538 INFO L85 PathProgramCache]: Analyzing trace with hash 968043893, now seen corresponding path program 5 times [2024-06-28 03:40:05,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373436089] [2024-06-28 03:40:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:05,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:06,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:06,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373436089] [2024-06-28 03:40:06,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373436089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:06,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:06,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297857927] [2024-06-28 03:40:06,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:06,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:06,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:06,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:06,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:06,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:06,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 621 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:06,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:06,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:06,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:06,346 INFO L124 PetriNetUnfolderBase]: 227/435 cut-off events. [2024-06-28 03:40:06,346 INFO L125 PetriNetUnfolderBase]: For 4853/4853 co-relation queries the response was YES. [2024-06-28 03:40:06,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 435 events. 227/435 cut-off events. For 4853/4853 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1915 event pairs, 55 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 2136. Up to 292 conditions per place. [2024-06-28 03:40:06,349 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 50 selfloop transitions, 33 changer transitions 0/87 dead transitions. [2024-06-28 03:40:06,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 87 transitions, 830 flow [2024-06-28 03:40:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 03:40:06,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-28 03:40:06,350 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 621 flow. Second operand 9 states and 122 transitions. [2024-06-28 03:40:06,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 87 transitions, 830 flow [2024-06-28 03:40:06,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 751 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:06,356 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 624 flow [2024-06-28 03:40:06,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-28 03:40:06,357 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-28 03:40:06,357 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 624 flow [2024-06-28 03:40:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:06,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:06,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:06,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:40:06,357 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)] === [2024-06-28 03:40:06,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash 976625685, now seen corresponding path program 1 times [2024-06-28 03:40:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494103495] [2024-06-28 03:40:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:06,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:07,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:07,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494103495] [2024-06-28 03:40:07,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494103495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:07,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:07,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:07,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919841252] [2024-06-28 03:40:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:07,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:07,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:07,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:07,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:07,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 624 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:07,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:07,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:07,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:07,634 INFO L124 PetriNetUnfolderBase]: 225/433 cut-off events. [2024-06-28 03:40:07,635 INFO L125 PetriNetUnfolderBase]: For 4905/4905 co-relation queries the response was YES. [2024-06-28 03:40:07,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2161 conditions, 433 events. 225/433 cut-off events. For 4905/4905 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1918 event pairs, 92 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2121. Up to 380 conditions per place. [2024-06-28 03:40:07,639 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-06-28 03:40:07,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 86 transitions, 818 flow [2024-06-28 03:40:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 03:40:07,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-28 03:40:07,643 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 624 flow. Second operand 9 states and 113 transitions. [2024-06-28 03:40:07,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 86 transitions, 818 flow [2024-06-28 03:40:07,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 86 transitions, 762 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:07,651 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 619 flow [2024-06-28 03:40:07,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=619, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2024-06-28 03:40:07,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-28 03:40:07,652 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 619 flow [2024-06-28 03:40:07,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:07,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:07,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:07,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:40:07,653 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)] === [2024-06-28 03:40:07,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:07,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1699106868, now seen corresponding path program 1 times [2024-06-28 03:40:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:07,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160014966] [2024-06-28 03:40:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:07,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:08,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160014966] [2024-06-28 03:40:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160014966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:08,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:08,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:08,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043230674] [2024-06-28 03:40:08,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:08,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:08,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:08,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:08,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:08,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:08,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 619 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:08,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:08,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:08,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:08,675 INFO L124 PetriNetUnfolderBase]: 228/439 cut-off events. [2024-06-28 03:40:08,675 INFO L125 PetriNetUnfolderBase]: For 5231/5231 co-relation queries the response was YES. [2024-06-28 03:40:08,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 439 events. 228/439 cut-off events. For 5231/5231 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1920 event pairs, 55 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2153. Up to 378 conditions per place. [2024-06-28 03:40:08,679 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 71 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2024-06-28 03:40:08,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 855 flow [2024-06-28 03:40:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:08,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 03:40:08,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-28 03:40:08,680 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 619 flow. Second operand 9 states and 118 transitions. [2024-06-28 03:40:08,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 855 flow [2024-06-28 03:40:08,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 755 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:08,688 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 590 flow [2024-06-28 03:40:08,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=590, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-28 03:40:08,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-28 03:40:08,688 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 590 flow [2024-06-28 03:40:08,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:08,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:08,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:08,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:40:08,689 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)] === [2024-06-28 03:40:08,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash -289209488, now seen corresponding path program 2 times [2024-06-28 03:40:08,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326099293] [2024-06-28 03:40:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:08,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:09,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:09,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326099293] [2024-06-28 03:40:09,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326099293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:09,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:09,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:09,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25194936] [2024-06-28 03:40:09,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:09,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:09,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:09,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:09,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:09,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:09,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:09,652 INFO L124 PetriNetUnfolderBase]: 234/449 cut-off events. [2024-06-28 03:40:09,652 INFO L125 PetriNetUnfolderBase]: For 5834/5834 co-relation queries the response was YES. [2024-06-28 03:40:09,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 449 events. 234/449 cut-off events. For 5834/5834 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1975 event pairs, 53 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 2196. Up to 377 conditions per place. [2024-06-28 03:40:09,655 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-28 03:40:09,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 854 flow [2024-06-28 03:40:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 03:40:09,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:40:09,659 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 590 flow. Second operand 9 states and 120 transitions. [2024-06-28 03:40:09,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 854 flow [2024-06-28 03:40:09,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 799 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:09,668 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 637 flow [2024-06-28 03:40:09,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=637, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-28 03:40:09,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-28 03:40:09,669 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 637 flow [2024-06-28 03:40:09,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:09,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:09,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:40:09,670 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)] === [2024-06-28 03:40:09,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:09,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1559674926, now seen corresponding path program 1 times [2024-06-28 03:40:09,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:09,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750892971] [2024-06-28 03:40:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:09,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:10,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:10,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750892971] [2024-06-28 03:40:10,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750892971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:10,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:10,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:10,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674524795] [2024-06-28 03:40:10,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:10,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:10,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:10,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:10,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 637 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:10,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:10,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:10,522 INFO L124 PetriNetUnfolderBase]: 240/461 cut-off events. [2024-06-28 03:40:10,522 INFO L125 PetriNetUnfolderBase]: For 6698/6698 co-relation queries the response was YES. [2024-06-28 03:40:10,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 461 events. 240/461 cut-off events. For 6698/6698 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2055 event pairs, 50 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 2301. Up to 379 conditions per place. [2024-06-28 03:40:10,525 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 79 selfloop transitions, 19 changer transitions 0/102 dead transitions. [2024-06-28 03:40:10,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 907 flow [2024-06-28 03:40:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:40:10,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:40:10,527 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 637 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:40:10,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 907 flow [2024-06-28 03:40:10,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 833 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:10,535 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 638 flow [2024-06-28 03:40:10,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=638, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-06-28 03:40:10,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-28 03:40:10,535 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 638 flow [2024-06-28 03:40:10,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:10,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:10,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:40:10,536 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)] === [2024-06-28 03:40:10,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:10,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1228694552, now seen corresponding path program 3 times [2024-06-28 03:40:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:10,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884232254] [2024-06-28 03:40:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:10,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:11,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:11,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884232254] [2024-06-28 03:40:11,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884232254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:11,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:11,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:11,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839490546] [2024-06-28 03:40:11,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:11,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:11,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:11,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:11,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:11,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:11,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 638 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:11,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:11,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:11,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:11,544 INFO L124 PetriNetUnfolderBase]: 238/456 cut-off events. [2024-06-28 03:40:11,544 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2024-06-28 03:40:11,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 456 events. 238/456 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2063 event pairs, 58 based on Foata normal form. 1/452 useless extension candidates. Maximal degree in co-relation 2286. Up to 384 conditions per place. [2024-06-28 03:40:11,549 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 21 changer transitions 0/98 dead transitions. [2024-06-28 03:40:11,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 896 flow [2024-06-28 03:40:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 03:40:11,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:40:11,550 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 638 flow. Second operand 9 states and 117 transitions. [2024-06-28 03:40:11,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 896 flow [2024-06-28 03:40:11,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 98 transitions, 837 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:11,558 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 676 flow [2024-06-28 03:40:11,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=676, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-28 03:40:11,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-28 03:40:11,558 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 676 flow [2024-06-28 03:40:11,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:11,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:11,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:11,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:40:11,559 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)] === [2024-06-28 03:40:11,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:11,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1080869626, now seen corresponding path program 2 times [2024-06-28 03:40:11,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:11,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817849837] [2024-06-28 03:40:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:11,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:12,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817849837] [2024-06-28 03:40:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817849837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:12,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467764721] [2024-06-28 03:40:12,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:12,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:12,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:12,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 676 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:12,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:12,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:12,280 INFO L124 PetriNetUnfolderBase]: 244/468 cut-off events. [2024-06-28 03:40:12,281 INFO L125 PetriNetUnfolderBase]: For 7637/7637 co-relation queries the response was YES. [2024-06-28 03:40:12,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 468 events. 244/468 cut-off events. For 7637/7637 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2105 event pairs, 46 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2368. Up to 356 conditions per place. [2024-06-28 03:40:12,284 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 26 changer transitions 0/105 dead transitions. [2024-06-28 03:40:12,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 952 flow [2024-06-28 03:40:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 03:40:12,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:40:12,285 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 676 flow. Second operand 9 states and 120 transitions. [2024-06-28 03:40:12,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 952 flow [2024-06-28 03:40:12,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 867 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:12,294 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 689 flow [2024-06-28 03:40:12,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-06-28 03:40:12,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-28 03:40:12,295 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 689 flow [2024-06-28 03:40:12,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:12,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:12,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:40:12,296 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)] === [2024-06-28 03:40:12,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash 210614308, now seen corresponding path program 3 times [2024-06-28 03:40:12,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:12,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380658199] [2024-06-28 03:40:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:12,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:12,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:12,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380658199] [2024-06-28 03:40:12,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380658199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:12,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:12,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:12,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000931643] [2024-06-28 03:40:12,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:12,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:12,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:12,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:12,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:12,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 689 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:12,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:12,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:13,102 INFO L124 PetriNetUnfolderBase]: 250/481 cut-off events. [2024-06-28 03:40:13,103 INFO L125 PetriNetUnfolderBase]: For 8382/8382 co-relation queries the response was YES. [2024-06-28 03:40:13,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 481 events. 250/481 cut-off events. For 8382/8382 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2185 event pairs, 96 based on Foata normal form. 2/482 useless extension candidates. Maximal degree in co-relation 2475. Up to 419 conditions per place. [2024-06-28 03:40:13,106 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2024-06-28 03:40:13,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 102 transitions, 945 flow [2024-06-28 03:40:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:40:13,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 03:40:13,107 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 689 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:40:13,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 102 transitions, 945 flow [2024-06-28 03:40:13,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 863 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:13,115 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 686 flow [2024-06-28 03:40:13,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-06-28 03:40:13,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-28 03:40:13,115 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 686 flow [2024-06-28 03:40:13,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:13,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:13,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:13,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:40:13,116 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)] === [2024-06-28 03:40:13,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash 210287878, now seen corresponding path program 4 times [2024-06-28 03:40:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:13,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573641005] [2024-06-28 03:40:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:13,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:13,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:13,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573641005] [2024-06-28 03:40:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573641005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:13,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:13,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:13,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269188792] [2024-06-28 03:40:13,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:13,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:13,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:13,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:13,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:13,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:13,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 686 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:13,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:13,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:13,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:14,042 INFO L124 PetriNetUnfolderBase]: 261/496 cut-off events. [2024-06-28 03:40:14,042 INFO L125 PetriNetUnfolderBase]: For 9108/9108 co-relation queries the response was YES. [2024-06-28 03:40:14,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2613 conditions, 496 events. 261/496 cut-off events. For 9108/9108 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2277 event pairs, 43 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2567. Up to 301 conditions per place. [2024-06-28 03:40:14,047 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 62 selfloop transitions, 45 changer transitions 0/111 dead transitions. [2024-06-28 03:40:14,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 111 transitions, 1062 flow [2024-06-28 03:40:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 03:40:14,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:40:14,048 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 686 flow. Second operand 10 states and 135 transitions. [2024-06-28 03:40:14,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 111 transitions, 1062 flow [2024-06-28 03:40:14,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 989 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:14,058 INFO L231 Difference]: Finished difference. Result has 106 places, 97 transitions, 788 flow [2024-06-28 03:40:14,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=788, PETRI_PLACES=106, PETRI_TRANSITIONS=97} [2024-06-28 03:40:14,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-28 03:40:14,059 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 97 transitions, 788 flow [2024-06-28 03:40:14,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:14,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:14,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:14,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:40:14,059 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)] === [2024-06-28 03:40:14,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash -55409402, now seen corresponding path program 5 times [2024-06-28 03:40:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:14,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871955387] [2024-06-28 03:40:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:14,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:14,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871955387] [2024-06-28 03:40:14,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871955387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:14,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:14,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:14,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84724419] [2024-06-28 03:40:14,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:14,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:14,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:14,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:14,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:14,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:14,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 97 transitions, 788 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:14,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:14,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:14,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:14,897 INFO L124 PetriNetUnfolderBase]: 267/508 cut-off events. [2024-06-28 03:40:14,897 INFO L125 PetriNetUnfolderBase]: For 10032/10032 co-relation queries the response was YES. [2024-06-28 03:40:14,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2778 conditions, 508 events. 267/508 cut-off events. For 10032/10032 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2362 event pairs, 62 based on Foata normal form. 2/507 useless extension candidates. Maximal degree in co-relation 2732. Up to 307 conditions per place. [2024-06-28 03:40:14,901 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 67 selfloop transitions, 42 changer transitions 0/113 dead transitions. [2024-06-28 03:40:14,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 1136 flow [2024-06-28 03:40:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:40:14,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 03:40:14,902 INFO L175 Difference]: Start difference. First operand has 106 places, 97 transitions, 788 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:40:14,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 1136 flow [2024-06-28 03:40:14,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 1056 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:14,913 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 839 flow [2024-06-28 03:40:14,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=839, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2024-06-28 03:40:14,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-28 03:40:14,914 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 839 flow [2024-06-28 03:40:14,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:14,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:14,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:14,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:40:14,915 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)] === [2024-06-28 03:40:14,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash 201091108, now seen corresponding path program 6 times [2024-06-28 03:40:14,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:14,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710079088] [2024-06-28 03:40:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:14,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710079088] [2024-06-28 03:40:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710079088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:15,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:15,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321546022] [2024-06-28 03:40:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:15,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:15,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:15,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 839 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:15,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:15,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:15,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:15,845 INFO L124 PetriNetUnfolderBase]: 263/500 cut-off events. [2024-06-28 03:40:15,845 INFO L125 PetriNetUnfolderBase]: For 9874/9874 co-relation queries the response was YES. [2024-06-28 03:40:15,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 500 events. 263/500 cut-off events. For 9874/9874 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2301 event pairs, 45 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2704. Up to 304 conditions per place. [2024-06-28 03:40:15,848 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 64 selfloop transitions, 44 changer transitions 0/112 dead transitions. [2024-06-28 03:40:15,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 112 transitions, 1093 flow [2024-06-28 03:40:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 03:40:15,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:40:15,855 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 839 flow. Second operand 10 states and 135 transitions. [2024-06-28 03:40:15,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 112 transitions, 1093 flow [2024-06-28 03:40:15,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 965 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:15,866 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 804 flow [2024-06-28 03:40:15,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=804, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2024-06-28 03:40:15,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-28 03:40:15,867 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 804 flow [2024-06-28 03:40:15,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:15,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:15,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:15,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:40:15,867 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)] === [2024-06-28 03:40:15,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:15,868 INFO L85 PathProgramCache]: Analyzing trace with hash 210626212, now seen corresponding path program 1 times [2024-06-28 03:40:15,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:15,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519412720] [2024-06-28 03:40:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:15,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:16,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:16,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519412720] [2024-06-28 03:40:16,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519412720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:16,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:16,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394559773] [2024-06-28 03:40:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:16,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:16,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:16,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:16,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:16,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 804 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:16,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:16,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:16,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:16,994 INFO L124 PetriNetUnfolderBase]: 260/498 cut-off events. [2024-06-28 03:40:16,994 INFO L125 PetriNetUnfolderBase]: For 9492/9492 co-relation queries the response was YES. [2024-06-28 03:40:16,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 498 events. 260/498 cut-off events. For 9492/9492 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2296 event pairs, 101 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2611. Up to 433 conditions per place. [2024-06-28 03:40:17,000 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 89 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2024-06-28 03:40:17,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 109 transitions, 1036 flow [2024-06-28 03:40:17,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:40:17,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-28 03:40:17,002 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 804 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:40:17,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 109 transitions, 1036 flow [2024-06-28 03:40:17,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 914 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:17,015 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 718 flow [2024-06-28 03:40:17,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=718, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2024-06-28 03:40:17,017 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-28 03:40:17,017 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 718 flow [2024-06-28 03:40:17,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:17,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:17,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:17,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:40:17,017 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)] === [2024-06-28 03:40:17,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1773658632, now seen corresponding path program 1 times [2024-06-28 03:40:17,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718251282] [2024-06-28 03:40:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:17,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:17,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:17,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718251282] [2024-06-28 03:40:17,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718251282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:17,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:17,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498879432] [2024-06-28 03:40:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:17,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:17,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:17,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:17,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:17,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:17,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:17,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:17,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:17,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:18,096 INFO L124 PetriNetUnfolderBase]: 241/478 cut-off events. [2024-06-28 03:40:18,096 INFO L125 PetriNetUnfolderBase]: For 10295/10296 co-relation queries the response was YES. [2024-06-28 03:40:18,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 478 events. 241/478 cut-off events. For 10295/10296 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2257 event pairs, 48 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2463. Up to 373 conditions per place. [2024-06-28 03:40:18,099 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 80 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-28 03:40:18,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 113 transitions, 962 flow [2024-06-28 03:40:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 03:40:18,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:40:18,113 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 718 flow. Second operand 9 states and 128 transitions. [2024-06-28 03:40:18,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 113 transitions, 962 flow [2024-06-28 03:40:18,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 922 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:18,124 INFO L231 Difference]: Finished difference. Result has 114 places, 100 transitions, 734 flow [2024-06-28 03:40:18,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=734, PETRI_PLACES=114, PETRI_TRANSITIONS=100} [2024-06-28 03:40:18,124 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-28 03:40:18,124 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 100 transitions, 734 flow [2024-06-28 03:40:18,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:18,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:18,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:18,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:40:18,125 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)] === [2024-06-28 03:40:18,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1828358976, now seen corresponding path program 2 times [2024-06-28 03:40:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:18,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629246120] [2024-06-28 03:40:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:18,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:18,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:18,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629246120] [2024-06-28 03:40:18,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629246120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:18,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:18,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:18,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945895016] [2024-06-28 03:40:18,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:18,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:18,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:18,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:18,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:18,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:18,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 100 transitions, 734 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:18,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:18,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:18,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:18,997 INFO L124 PetriNetUnfolderBase]: 251/500 cut-off events. [2024-06-28 03:40:18,998 INFO L125 PetriNetUnfolderBase]: For 10835/10836 co-relation queries the response was YES. [2024-06-28 03:40:18,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 500 events. 251/500 cut-off events. For 10835/10836 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2390 event pairs, 55 based on Foata normal form. 3/502 useless extension candidates. Maximal degree in co-relation 2569. Up to 395 conditions per place. [2024-06-28 03:40:19,002 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 89 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2024-06-28 03:40:19,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 998 flow [2024-06-28 03:40:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:19,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:19,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-28 03:40:19,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-28 03:40:19,003 INFO L175 Difference]: Start difference. First operand has 114 places, 100 transitions, 734 flow. Second operand 9 states and 127 transitions. [2024-06-28 03:40:19,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 117 transitions, 998 flow [2024-06-28 03:40:19,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 117 transitions, 952 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:19,014 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 744 flow [2024-06-28 03:40:19,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=744, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-06-28 03:40:19,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-28 03:40:19,015 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 744 flow [2024-06-28 03:40:19,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:19,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:19,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:19,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:40:19,016 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)] === [2024-06-28 03:40:19,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash -755037452, now seen corresponding path program 1 times [2024-06-28 03:40:19,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:19,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872962670] [2024-06-28 03:40:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:19,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872962670] [2024-06-28 03:40:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872962670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:19,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:19,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499418925] [2024-06-28 03:40:19,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:19,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:19,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:19,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:19,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:19,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 744 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:19,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:19,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:19,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:20,070 INFO L124 PetriNetUnfolderBase]: 276/529 cut-off events. [2024-06-28 03:40:20,070 INFO L125 PetriNetUnfolderBase]: For 10898/10898 co-relation queries the response was YES. [2024-06-28 03:40:20,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2776 conditions, 529 events. 276/529 cut-off events. For 10898/10898 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2488 event pairs, 60 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 2723. Up to 450 conditions per place. [2024-06-28 03:40:20,073 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 90 selfloop transitions, 23 changer transitions 0/117 dead transitions. [2024-06-28 03:40:20,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 117 transitions, 1044 flow [2024-06-28 03:40:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:40:20,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:40:20,079 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 744 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:40:20,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 117 transitions, 1044 flow [2024-06-28 03:40:20,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 117 transitions, 1008 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:20,092 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 803 flow [2024-06-28 03:40:20,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=803, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2024-06-28 03:40:20,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-28 03:40:20,093 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 803 flow [2024-06-28 03:40:20,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:20,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:20,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:20,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:40:20,094 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)] === [2024-06-28 03:40:20,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1111961560, now seen corresponding path program 3 times [2024-06-28 03:40:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:20,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077418178] [2024-06-28 03:40:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:20,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:20,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077418178] [2024-06-28 03:40:20,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077418178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:20,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:20,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:20,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423956715] [2024-06-28 03:40:20,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:20,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:20,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:20,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:20,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:20,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:20,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:20,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:20,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:21,100 INFO L124 PetriNetUnfolderBase]: 257/514 cut-off events. [2024-06-28 03:40:21,100 INFO L125 PetriNetUnfolderBase]: For 12897/12899 co-relation queries the response was YES. [2024-06-28 03:40:21,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2770 conditions, 514 events. 257/514 cut-off events. For 12897/12899 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2465 event pairs, 56 based on Foata normal form. 4/517 useless extension candidates. Maximal degree in co-relation 2716. Up to 418 conditions per place. [2024-06-28 03:40:21,103 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 90 selfloop transitions, 16 changer transitions 0/119 dead transitions. [2024-06-28 03:40:21,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 119 transitions, 1069 flow [2024-06-28 03:40:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 03:40:21,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-28 03:40:21,104 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 803 flow. Second operand 9 states and 125 transitions. [2024-06-28 03:40:21,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 119 transitions, 1069 flow [2024-06-28 03:40:21,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 990 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:21,119 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 791 flow [2024-06-28 03:40:21,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=791, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2024-06-28 03:40:21,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-28 03:40:21,119 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 791 flow [2024-06-28 03:40:21,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:21,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:21,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:21,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:40:21,120 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)] === [2024-06-28 03:40:21,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:21,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2086483318, now seen corresponding path program 4 times [2024-06-28 03:40:21,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:21,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469395544] [2024-06-28 03:40:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:21,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:21,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:21,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469395544] [2024-06-28 03:40:21,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469395544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:21,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:21,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:21,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498870900] [2024-06-28 03:40:21,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:21,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:21,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:21,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:21,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:21,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 791 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:21,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:21,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:21,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:22,093 INFO L124 PetriNetUnfolderBase]: 266/537 cut-off events. [2024-06-28 03:40:22,093 INFO L125 PetriNetUnfolderBase]: For 13941/13944 co-relation queries the response was YES. [2024-06-28 03:40:22,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2872 conditions, 537 events. 266/537 cut-off events. For 13941/13944 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2639 event pairs, 54 based on Foata normal form. 5/541 useless extension candidates. Maximal degree in co-relation 2816. Up to 415 conditions per place. [2024-06-28 03:40:22,096 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 92 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-28 03:40:22,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 125 transitions, 1079 flow [2024-06-28 03:40:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:22,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-28 03:40:22,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-28 03:40:22,098 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 791 flow. Second operand 9 states and 129 transitions. [2024-06-28 03:40:22,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 125 transitions, 1079 flow [2024-06-28 03:40:22,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 125 transitions, 1037 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:22,115 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 821 flow [2024-06-28 03:40:22,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=821, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2024-06-28 03:40:22,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-28 03:40:22,116 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 821 flow [2024-06-28 03:40:22,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:22,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:22,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:22,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:40:22,117 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)] === [2024-06-28 03:40:22,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash -504204962, now seen corresponding path program 5 times [2024-06-28 03:40:22,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:22,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449179667] [2024-06-28 03:40:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:22,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449179667] [2024-06-28 03:40:22,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449179667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:22,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:22,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:22,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514977986] [2024-06-28 03:40:22,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:22,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:22,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 109 transitions, 821 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:22,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:22,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:22,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:23,083 INFO L124 PetriNetUnfolderBase]: 271/546 cut-off events. [2024-06-28 03:40:23,084 INFO L125 PetriNetUnfolderBase]: For 16359/16363 co-relation queries the response was YES. [2024-06-28 03:40:23,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 546 events. 271/546 cut-off events. For 16359/16363 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2714 event pairs, 59 based on Foata normal form. 5/548 useless extension candidates. Maximal degree in co-relation 2949. Up to 434 conditions per place. [2024-06-28 03:40:23,087 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 90 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2024-06-28 03:40:23,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 124 transitions, 1097 flow [2024-06-28 03:40:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 03:40:23,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:40:23,088 INFO L175 Difference]: Start difference. First operand has 127 places, 109 transitions, 821 flow. Second operand 9 states and 128 transitions. [2024-06-28 03:40:23,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 124 transitions, 1097 flow [2024-06-28 03:40:23,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 1045 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:23,103 INFO L231 Difference]: Finished difference. Result has 130 places, 110 transitions, 835 flow [2024-06-28 03:40:23,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=835, PETRI_PLACES=130, PETRI_TRANSITIONS=110} [2024-06-28 03:40:23,103 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-28 03:40:23,104 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 110 transitions, 835 flow [2024-06-28 03:40:23,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:23,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:23,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:23,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:40:23,104 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)] === [2024-06-28 03:40:23,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash -243297034, now seen corresponding path program 2 times [2024-06-28 03:40:23,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:23,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252047354] [2024-06-28 03:40:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:23,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252047354] [2024-06-28 03:40:23,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252047354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:23,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:23,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789213040] [2024-06-28 03:40:23,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:23,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:23,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:23,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:23,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:23,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:23,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 110 transitions, 835 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:23,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:23,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:23,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:24,180 INFO L124 PetriNetUnfolderBase]: 291/567 cut-off events. [2024-06-28 03:40:24,181 INFO L125 PetriNetUnfolderBase]: For 13478/13478 co-relation queries the response was YES. [2024-06-28 03:40:24,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 567 events. 291/567 cut-off events. For 13478/13478 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2776 event pairs, 71 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 2955. Up to 465 conditions per place. [2024-06-28 03:40:24,185 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 33 changer transitions 0/124 dead transitions. [2024-06-28 03:40:24,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 124 transitions, 1149 flow [2024-06-28 03:40:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 03:40:24,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-28 03:40:24,187 INFO L175 Difference]: Start difference. First operand has 130 places, 110 transitions, 835 flow. Second operand 9 states and 119 transitions. [2024-06-28 03:40:24,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 124 transitions, 1149 flow [2024-06-28 03:40:24,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 124 transitions, 1093 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:24,207 INFO L231 Difference]: Finished difference. Result has 132 places, 112 transitions, 902 flow [2024-06-28 03:40:24,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=902, PETRI_PLACES=132, PETRI_TRANSITIONS=112} [2024-06-28 03:40:24,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-28 03:40:24,208 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 112 transitions, 902 flow [2024-06-28 03:40:24,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:24,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:24,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:24,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:40:24,209 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)] === [2024-06-28 03:40:24,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1764622286, now seen corresponding path program 6 times [2024-06-28 03:40:24,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:24,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716145948] [2024-06-28 03:40:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:24,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:24,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:24,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716145948] [2024-06-28 03:40:24,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716145948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:24,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:24,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:24,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097243317] [2024-06-28 03:40:24,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:24,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:24,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:24,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:24,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:24,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 112 transitions, 902 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:24,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:24,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:24,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:25,058 INFO L124 PetriNetUnfolderBase]: 280/564 cut-off events. [2024-06-28 03:40:25,058 INFO L125 PetriNetUnfolderBase]: For 16004/16007 co-relation queries the response was YES. [2024-06-28 03:40:25,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 564 events. 280/564 cut-off events. For 16004/16007 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2840 event pairs, 31 based on Foata normal form. 5/568 useless extension candidates. Maximal degree in co-relation 2979. Up to 407 conditions per place. [2024-06-28 03:40:25,062 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 94 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2024-06-28 03:40:25,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 130 transitions, 1204 flow [2024-06-28 03:40:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-28 03:40:25,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-28 03:40:25,063 INFO L175 Difference]: Start difference. First operand has 132 places, 112 transitions, 902 flow. Second operand 9 states and 127 transitions. [2024-06-28 03:40:25,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 130 transitions, 1204 flow [2024-06-28 03:40:25,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1103 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:25,082 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 881 flow [2024-06-28 03:40:25,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=881, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-06-28 03:40:25,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-28 03:40:25,083 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 881 flow [2024-06-28 03:40:25,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:25,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:25,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:25,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:40:25,084 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)] === [2024-06-28 03:40:25,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1105281432, now seen corresponding path program 1 times [2024-06-28 03:40:25,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017550036] [2024-06-28 03:40:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:25,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:25,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:25,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017550036] [2024-06-28 03:40:25,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017550036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:25,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306508720] [2024-06-28 03:40:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:25,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:25,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:25,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 881 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:25,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:25,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:25,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:26,131 INFO L124 PetriNetUnfolderBase]: 303/593 cut-off events. [2024-06-28 03:40:26,131 INFO L125 PetriNetUnfolderBase]: For 14137/14137 co-relation queries the response was YES. [2024-06-28 03:40:26,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 593 events. 303/593 cut-off events. For 14137/14137 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2984 event pairs, 73 based on Foata normal form. 1/593 useless extension candidates. Maximal degree in co-relation 3055. Up to 516 conditions per place. [2024-06-28 03:40:26,134 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 21 changer transitions 0/135 dead transitions. [2024-06-28 03:40:26,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 135 transitions, 1226 flow [2024-06-28 03:40:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 03:40:26,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-28 03:40:26,136 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 881 flow. Second operand 11 states and 139 transitions. [2024-06-28 03:40:26,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 135 transitions, 1226 flow [2024-06-28 03:40:26,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 1146 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:26,166 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 918 flow [2024-06-28 03:40:26,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=918, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-28 03:40:26,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-28 03:40:26,167 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 918 flow [2024-06-28 03:40:26,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:26,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:26,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:26,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:40:26,167 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)] === [2024-06-28 03:40:26,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:26,168 INFO L85 PathProgramCache]: Analyzing trace with hash 565170548, now seen corresponding path program 7 times [2024-06-28 03:40:26,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:26,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969968243] [2024-06-28 03:40:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:26,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:26,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:26,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969968243] [2024-06-28 03:40:26,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969968243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:26,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:26,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079933550] [2024-06-28 03:40:26,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:26,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:26,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:26,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:26,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 918 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:26,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:26,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:26,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:27,199 INFO L124 PetriNetUnfolderBase]: 287/575 cut-off events. [2024-06-28 03:40:27,200 INFO L125 PetriNetUnfolderBase]: For 16310/16312 co-relation queries the response was YES. [2024-06-28 03:40:27,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 575 events. 287/575 cut-off events. For 16310/16312 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2925 event pairs, 57 based on Foata normal form. 4/573 useless extension candidates. Maximal degree in co-relation 3013. Up to 447 conditions per place. [2024-06-28 03:40:27,203 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 95 selfloop transitions, 26 changer transitions 0/135 dead transitions. [2024-06-28 03:40:27,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 135 transitions, 1212 flow [2024-06-28 03:40:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-28 03:40:27,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44921875 [2024-06-28 03:40:27,204 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 918 flow. Second operand 8 states and 115 transitions. [2024-06-28 03:40:27,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 135 transitions, 1212 flow [2024-06-28 03:40:27,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 135 transitions, 1162 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:27,226 INFO L231 Difference]: Finished difference. Result has 141 places, 123 transitions, 952 flow [2024-06-28 03:40:27,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=952, PETRI_PLACES=141, PETRI_TRANSITIONS=123} [2024-06-28 03:40:27,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-28 03:40:27,227 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 123 transitions, 952 flow [2024-06-28 03:40:27,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:27,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:27,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:27,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:40:27,228 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)] === [2024-06-28 03:40:27,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:27,228 INFO L85 PathProgramCache]: Analyzing trace with hash 675280312, now seen corresponding path program 8 times [2024-06-28 03:40:27,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:27,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224175932] [2024-06-28 03:40:27,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:27,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:27,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:27,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224175932] [2024-06-28 03:40:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224175932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:27,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:27,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:27,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185876768] [2024-06-28 03:40:27,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:27,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:27,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:28,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:28,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 123 transitions, 952 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:28,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:28,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:28,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:28,277 INFO L124 PetriNetUnfolderBase]: 293/585 cut-off events. [2024-06-28 03:40:28,277 INFO L125 PetriNetUnfolderBase]: For 17342/17344 co-relation queries the response was YES. [2024-06-28 03:40:28,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 585 events. 293/585 cut-off events. For 17342/17344 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2943 event pairs, 32 based on Foata normal form. 4/588 useless extension candidates. Maximal degree in co-relation 3081. Up to 406 conditions per place. [2024-06-28 03:40:28,296 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 98 selfloop transitions, 25 changer transitions 0/137 dead transitions. [2024-06-28 03:40:28,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 137 transitions, 1254 flow [2024-06-28 03:40:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-28 03:40:28,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-28 03:40:28,313 INFO L175 Difference]: Start difference. First operand has 141 places, 123 transitions, 952 flow. Second operand 8 states and 114 transitions. [2024-06-28 03:40:28,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 137 transitions, 1254 flow [2024-06-28 03:40:28,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 137 transitions, 1180 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:28,337 INFO L231 Difference]: Finished difference. Result has 143 places, 124 transitions, 964 flow [2024-06-28 03:40:28,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=964, PETRI_PLACES=143, PETRI_TRANSITIONS=124} [2024-06-28 03:40:28,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-28 03:40:28,338 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 124 transitions, 964 flow [2024-06-28 03:40:28,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:28,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:28,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:28,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:40:28,338 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)] === [2024-06-28 03:40:28,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:28,339 INFO L85 PathProgramCache]: Analyzing trace with hash 846100852, now seen corresponding path program 9 times [2024-06-28 03:40:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:28,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904811787] [2024-06-28 03:40:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:28,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:28,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:28,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904811787] [2024-06-28 03:40:28,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904811787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:28,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:28,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:28,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794183188] [2024-06-28 03:40:28,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:28,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:28,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:28,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:29,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:29,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 124 transitions, 964 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:29,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:29,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:29,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:29,215 INFO L124 PetriNetUnfolderBase]: 294/590 cut-off events. [2024-06-28 03:40:29,215 INFO L125 PetriNetUnfolderBase]: For 16410/16412 co-relation queries the response was YES. [2024-06-28 03:40:29,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3158 conditions, 590 events. 294/590 cut-off events. For 16410/16412 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3010 event pairs, 64 based on Foata normal form. 4/593 useless extension candidates. Maximal degree in co-relation 3094. Up to 480 conditions per place. [2024-06-28 03:40:29,219 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 103 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-06-28 03:40:29,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 137 transitions, 1266 flow [2024-06-28 03:40:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 03:40:29,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:40:29,241 INFO L175 Difference]: Start difference. First operand has 143 places, 124 transitions, 964 flow. Second operand 8 states and 112 transitions. [2024-06-28 03:40:29,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 137 transitions, 1266 flow [2024-06-28 03:40:29,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 137 transitions, 1194 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:29,267 INFO L231 Difference]: Finished difference. Result has 146 places, 127 transitions, 980 flow [2024-06-28 03:40:29,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=980, PETRI_PLACES=146, PETRI_TRANSITIONS=127} [2024-06-28 03:40:29,268 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-28 03:40:29,268 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 127 transitions, 980 flow [2024-06-28 03:40:29,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:29,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:29,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:29,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:40:29,268 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)] === [2024-06-28 03:40:29,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1571683388, now seen corresponding path program 10 times [2024-06-28 03:40:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:29,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948899179] [2024-06-28 03:40:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:29,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:29,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:29,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948899179] [2024-06-28 03:40:29,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948899179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:29,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:29,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:40:29,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51837618] [2024-06-28 03:40:29,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:29,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:40:29,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:29,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:40:29,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:40:30,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 03:40:30,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 127 transitions, 980 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:30,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:30,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 03:40:30,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:30,202 INFO L124 PetriNetUnfolderBase]: 291/585 cut-off events. [2024-06-28 03:40:30,203 INFO L125 PetriNetUnfolderBase]: For 13304/13306 co-relation queries the response was YES. [2024-06-28 03:40:30,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 585 events. 291/585 cut-off events. For 13304/13306 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2987 event pairs, 62 based on Foata normal form. 4/585 useless extension candidates. Maximal degree in co-relation 2948. Up to 472 conditions per place. [2024-06-28 03:40:30,207 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 102 selfloop transitions, 21 changer transitions 0/137 dead transitions. [2024-06-28 03:40:30,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 137 transitions, 1256 flow [2024-06-28 03:40:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 03:40:30,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 03:40:30,220 INFO L175 Difference]: Start difference. First operand has 146 places, 127 transitions, 980 flow. Second operand 8 states and 112 transitions. [2024-06-28 03:40:30,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 137 transitions, 1256 flow [2024-06-28 03:40:30,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 137 transitions, 1216 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:40:30,241 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1003 flow [2024-06-28 03:40:30,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1003, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-28 03:40:30,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-28 03:40:30,242 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1003 flow [2024-06-28 03:40:30,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:30,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:30,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:30,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:40:30,243 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)] === [2024-06-28 03:40:30,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash 413757366, now seen corresponding path program 2 times [2024-06-28 03:40:30,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:30,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337838655] [2024-06-28 03:40:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:31,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:31,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337838655] [2024-06-28 03:40:31,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337838655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:31,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:31,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:31,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292356349] [2024-06-28 03:40:31,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:31,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:31,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:31,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:31,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:31,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1003 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:31,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:31,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:31,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:31,512 INFO L124 PetriNetUnfolderBase]: 318/623 cut-off events. [2024-06-28 03:40:31,513 INFO L125 PetriNetUnfolderBase]: For 12820/12820 co-relation queries the response was YES. [2024-06-28 03:40:31,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 623 events. 318/623 cut-off events. For 12820/12820 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3147 event pairs, 67 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3141. Up to 524 conditions per place. [2024-06-28 03:40:31,517 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 118 selfloop transitions, 23 changer transitions 0/145 dead transitions. [2024-06-28 03:40:31,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 145 transitions, 1381 flow [2024-06-28 03:40:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:40:31,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:40:31,524 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1003 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:40:31,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 145 transitions, 1381 flow [2024-06-28 03:40:31,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 145 transitions, 1295 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:31,546 INFO L231 Difference]: Finished difference. Result has 156 places, 132 transitions, 1023 flow [2024-06-28 03:40:31,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1023, PETRI_PLACES=156, PETRI_TRANSITIONS=132} [2024-06-28 03:40:31,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-28 03:40:31,548 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 132 transitions, 1023 flow [2024-06-28 03:40:31,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:31,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:31,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:31,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:40:31,548 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)] === [2024-06-28 03:40:31,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:31,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2071009356, now seen corresponding path program 3 times [2024-06-28 03:40:31,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:31,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826322179] [2024-06-28 03:40:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:31,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:32,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:32,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826322179] [2024-06-28 03:40:32,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826322179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:32,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:32,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:32,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703346468] [2024-06-28 03:40:32,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:32,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:32,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:32,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 132 transitions, 1023 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:32,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:32,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:32,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:32,668 INFO L124 PetriNetUnfolderBase]: 324/630 cut-off events. [2024-06-28 03:40:32,668 INFO L125 PetriNetUnfolderBase]: For 14115/14115 co-relation queries the response was YES. [2024-06-28 03:40:32,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 630 events. 324/630 cut-off events. For 14115/14115 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3184 event pairs, 53 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 3249. Up to 420 conditions per place. [2024-06-28 03:40:32,672 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 91 selfloop transitions, 53 changer transitions 0/148 dead transitions. [2024-06-28 03:40:32,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 148 transitions, 1425 flow [2024-06-28 03:40:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 03:40:32,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:40:32,674 INFO L175 Difference]: Start difference. First operand has 156 places, 132 transitions, 1023 flow. Second operand 10 states and 136 transitions. [2024-06-28 03:40:32,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 148 transitions, 1425 flow [2024-06-28 03:40:32,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 1327 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:32,701 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1097 flow [2024-06-28 03:40:32,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1097, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-28 03:40:32,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-28 03:40:32,701 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1097 flow [2024-06-28 03:40:32,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:32,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:32,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:32,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:40:32,702 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)] === [2024-06-28 03:40:32,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1717690444, now seen corresponding path program 4 times [2024-06-28 03:40:32,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:32,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543018923] [2024-06-28 03:40:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:33,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:33,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543018923] [2024-06-28 03:40:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543018923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:33,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423929824] [2024-06-28 03:40:33,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:33,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:33,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:33,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:33,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1097 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:33,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:33,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:33,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:33,901 INFO L124 PetriNetUnfolderBase]: 330/640 cut-off events. [2024-06-28 03:40:33,901 INFO L125 PetriNetUnfolderBase]: For 15186/15186 co-relation queries the response was YES. [2024-06-28 03:40:33,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 640 events. 330/640 cut-off events. For 15186/15186 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3257 event pairs, 59 based on Foata normal form. 2/639 useless extension candidates. Maximal degree in co-relation 3430. Up to 430 conditions per place. [2024-06-28 03:40:33,906 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 103 selfloop transitions, 45 changer transitions 0/152 dead transitions. [2024-06-28 03:40:33,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 152 transitions, 1533 flow [2024-06-28 03:40:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 03:40:33,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 03:40:33,931 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1097 flow. Second operand 10 states and 138 transitions. [2024-06-28 03:40:33,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 152 transitions, 1533 flow [2024-06-28 03:40:33,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 152 transitions, 1383 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:33,957 INFO L231 Difference]: Finished difference. Result has 158 places, 138 transitions, 1109 flow [2024-06-28 03:40:33,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1109, PETRI_PLACES=158, PETRI_TRANSITIONS=138} [2024-06-28 03:40:33,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-28 03:40:33,960 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 138 transitions, 1109 flow [2024-06-28 03:40:33,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:33,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:33,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:33,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:40:33,961 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)] === [2024-06-28 03:40:33,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2060533836, now seen corresponding path program 5 times [2024-06-28 03:40:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:33,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836199167] [2024-06-28 03:40:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:34,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:34,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836199167] [2024-06-28 03:40:34,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836199167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:34,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:34,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:34,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895927878] [2024-06-28 03:40:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:34,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:34,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:34,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:34,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:34,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 138 transitions, 1109 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:34,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:34,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:34,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:34,998 INFO L124 PetriNetUnfolderBase]: 338/654 cut-off events. [2024-06-28 03:40:34,999 INFO L125 PetriNetUnfolderBase]: For 15943/15943 co-relation queries the response was YES. [2024-06-28 03:40:35,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 654 events. 338/654 cut-off events. For 15943/15943 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3301 event pairs, 102 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 3562. Up to 579 conditions per place. [2024-06-28 03:40:35,003 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 21 changer transitions 0/155 dead transitions. [2024-06-28 03:40:35,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 155 transitions, 1580 flow [2024-06-28 03:40:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 03:40:35,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 03:40:35,013 INFO L175 Difference]: Start difference. First operand has 158 places, 138 transitions, 1109 flow. Second operand 11 states and 137 transitions. [2024-06-28 03:40:35,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 155 transitions, 1580 flow [2024-06-28 03:40:35,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 155 transitions, 1438 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:35,046 INFO L231 Difference]: Finished difference. Result has 162 places, 144 transitions, 1096 flow [2024-06-28 03:40:35,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1096, PETRI_PLACES=162, PETRI_TRANSITIONS=144} [2024-06-28 03:40:35,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-28 03:40:35,047 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 1096 flow [2024-06-28 03:40:35,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:35,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:35,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:35,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:40:35,048 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)] === [2024-06-28 03:40:35,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2060890026, now seen corresponding path program 6 times [2024-06-28 03:40:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:35,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647843791] [2024-06-28 03:40:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:35,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:35,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:35,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647843791] [2024-06-28 03:40:35,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647843791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:35,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:35,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:35,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111740251] [2024-06-28 03:40:35,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:35,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:35,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:36,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:36,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 144 transitions, 1096 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:36,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:36,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:36,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:36,258 INFO L124 PetriNetUnfolderBase]: 339/656 cut-off events. [2024-06-28 03:40:36,258 INFO L125 PetriNetUnfolderBase]: For 16823/16823 co-relation queries the response was YES. [2024-06-28 03:40:36,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 656 events. 339/656 cut-off events. For 16823/16823 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3338 event pairs, 102 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 3518. Up to 582 conditions per place. [2024-06-28 03:40:36,262 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-28 03:40:36,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 155 transitions, 1472 flow [2024-06-28 03:40:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:40:36,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 03:40:36,263 INFO L175 Difference]: Start difference. First operand has 162 places, 144 transitions, 1096 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:40:36,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 155 transitions, 1472 flow [2024-06-28 03:40:36,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 155 transitions, 1400 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:36,294 INFO L231 Difference]: Finished difference. Result has 166 places, 146 transitions, 1130 flow [2024-06-28 03:40:36,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1130, PETRI_PLACES=166, PETRI_TRANSITIONS=146} [2024-06-28 03:40:36,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-28 03:40:36,295 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 146 transitions, 1130 flow [2024-06-28 03:40:36,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:36,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:36,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:36,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:40:36,295 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)] === [2024-06-28 03:40:36,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1938858070, now seen corresponding path program 7 times [2024-06-28 03:40:36,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:36,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388937680] [2024-06-28 03:40:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:36,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:37,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:37,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388937680] [2024-06-28 03:40:37,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388937680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:37,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:37,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:37,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991764610] [2024-06-28 03:40:37,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:37,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:37,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:37,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:37,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:37,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:37,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 146 transitions, 1130 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:37,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:37,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:37,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:37,427 INFO L124 PetriNetUnfolderBase]: 340/657 cut-off events. [2024-06-28 03:40:37,427 INFO L125 PetriNetUnfolderBase]: For 17527/17527 co-relation queries the response was YES. [2024-06-28 03:40:37,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3623 conditions, 657 events. 340/657 cut-off events. For 17527/17527 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3332 event pairs, 59 based on Foata normal form. 2/656 useless extension candidates. Maximal degree in co-relation 3549. Up to 447 conditions per place. [2024-06-28 03:40:37,431 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 108 selfloop transitions, 50 changer transitions 0/162 dead transitions. [2024-06-28 03:40:37,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 1604 flow [2024-06-28 03:40:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 03:40:37,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 03:40:37,432 INFO L175 Difference]: Start difference. First operand has 166 places, 146 transitions, 1130 flow. Second operand 10 states and 137 transitions. [2024-06-28 03:40:37,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 1604 flow [2024-06-28 03:40:37,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 162 transitions, 1520 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:37,461 INFO L231 Difference]: Finished difference. Result has 168 places, 149 transitions, 1232 flow [2024-06-28 03:40:37,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1232, PETRI_PLACES=168, PETRI_TRANSITIONS=149} [2024-06-28 03:40:37,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-28 03:40:37,462 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 149 transitions, 1232 flow [2024-06-28 03:40:37,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:37,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:37,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:37,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:40:37,463 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)] === [2024-06-28 03:40:37,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1670446983, now seen corresponding path program 1 times [2024-06-28 03:40:37,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:37,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546224293] [2024-06-28 03:40:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:37,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:38,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:38,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546224293] [2024-06-28 03:40:38,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546224293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:38,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:38,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001489633] [2024-06-28 03:40:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:38,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:38,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:38,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:38,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 149 transitions, 1232 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:38,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:38,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:38,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:38,718 INFO L124 PetriNetUnfolderBase]: 344/667 cut-off events. [2024-06-28 03:40:38,718 INFO L125 PetriNetUnfolderBase]: For 18382/18382 co-relation queries the response was YES. [2024-06-28 03:40:38,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 667 events. 344/667 cut-off events. For 18382/18382 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3395 event pairs, 51 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 3695. Up to 577 conditions per place. [2024-06-28 03:40:38,722 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 22 changer transitions 0/164 dead transitions. [2024-06-28 03:40:38,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 1602 flow [2024-06-28 03:40:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:40:38,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:40:38,723 INFO L175 Difference]: Start difference. First operand has 168 places, 149 transitions, 1232 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:40:38,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 1602 flow [2024-06-28 03:40:38,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 164 transitions, 1438 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:38,760 INFO L231 Difference]: Finished difference. Result has 170 places, 150 transitions, 1132 flow [2024-06-28 03:40:38,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1132, PETRI_PLACES=170, PETRI_TRANSITIONS=150} [2024-06-28 03:40:38,760 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-28 03:40:38,760 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 150 transitions, 1132 flow [2024-06-28 03:40:38,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:38,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:38,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:38,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:40:38,761 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)] === [2024-06-28 03:40:38,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:38,761 INFO L85 PathProgramCache]: Analyzing trace with hash -316665709, now seen corresponding path program 2 times [2024-06-28 03:40:38,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:38,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523422298] [2024-06-28 03:40:38,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:38,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:39,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523422298] [2024-06-28 03:40:39,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523422298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:39,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:39,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:39,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760163479] [2024-06-28 03:40:39,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:39,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:39,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:39,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:39,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 150 transitions, 1132 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:39,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:39,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:39,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:39,679 INFO L124 PetriNetUnfolderBase]: 348/676 cut-off events. [2024-06-28 03:40:39,679 INFO L125 PetriNetUnfolderBase]: For 18672/18672 co-relation queries the response was YES. [2024-06-28 03:40:39,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3699 conditions, 676 events. 348/676 cut-off events. For 18672/18672 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3452 event pairs, 62 based on Foata normal form. 2/677 useless extension candidates. Maximal degree in co-relation 3623. Up to 582 conditions per place. [2024-06-28 03:40:39,683 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 143 selfloop transitions, 19 changer transitions 0/166 dead transitions. [2024-06-28 03:40:39,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 166 transitions, 1510 flow [2024-06-28 03:40:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:40:39,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:40:39,708 INFO L175 Difference]: Start difference. First operand has 170 places, 150 transitions, 1132 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:40:39,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 166 transitions, 1510 flow [2024-06-28 03:40:39,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 166 transitions, 1456 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:39,743 INFO L231 Difference]: Finished difference. Result has 172 places, 151 transitions, 1138 flow [2024-06-28 03:40:39,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1138, PETRI_PLACES=172, PETRI_TRANSITIONS=151} [2024-06-28 03:40:39,743 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-28 03:40:39,744 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 151 transitions, 1138 flow [2024-06-28 03:40:39,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:39,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:39,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:39,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:40:39,744 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)] === [2024-06-28 03:40:39,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash -318539659, now seen corresponding path program 3 times [2024-06-28 03:40:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:39,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840616142] [2024-06-28 03:40:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:39,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:40,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:40,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840616142] [2024-06-28 03:40:40,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840616142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:40,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:40,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:40,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325849761] [2024-06-28 03:40:40,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:40,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:40,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:40,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:40,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:40,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:40,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 151 transitions, 1138 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:40,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:40,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:40,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:40,858 INFO L124 PetriNetUnfolderBase]: 352/683 cut-off events. [2024-06-28 03:40:40,858 INFO L125 PetriNetUnfolderBase]: For 19403/19403 co-relation queries the response was YES. [2024-06-28 03:40:40,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3751 conditions, 683 events. 352/683 cut-off events. For 19403/19403 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3483 event pairs, 51 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 3674. Up to 579 conditions per place. [2024-06-28 03:40:40,862 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 20 changer transitions 0/169 dead transitions. [2024-06-28 03:40:40,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 169 transitions, 1530 flow [2024-06-28 03:40:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:40:40,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:40:40,870 INFO L175 Difference]: Start difference. First operand has 172 places, 151 transitions, 1138 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:40:40,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 169 transitions, 1530 flow [2024-06-28 03:40:40,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 169 transitions, 1480 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:40,913 INFO L231 Difference]: Finished difference. Result has 174 places, 152 transitions, 1152 flow [2024-06-28 03:40:40,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1152, PETRI_PLACES=174, PETRI_TRANSITIONS=152} [2024-06-28 03:40:40,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-28 03:40:40,914 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 152 transitions, 1152 flow [2024-06-28 03:40:40,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:40,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:40,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:40,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:40:40,915 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)] === [2024-06-28 03:40:40,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:40,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1931323545, now seen corresponding path program 1 times [2024-06-28 03:40:40,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:40,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614298734] [2024-06-28 03:40:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:40,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:41,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:41,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614298734] [2024-06-28 03:40:41,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614298734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:41,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:41,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:41,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909117996] [2024-06-28 03:40:41,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:41,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:41,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:41,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:41,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:41,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 152 transitions, 1152 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:41,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:41,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:41,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:42,032 INFO L124 PetriNetUnfolderBase]: 355/688 cut-off events. [2024-06-28 03:40:42,033 INFO L125 PetriNetUnfolderBase]: For 19439/19439 co-relation queries the response was YES. [2024-06-28 03:40:42,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 688 events. 355/688 cut-off events. For 19439/19439 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3516 event pairs, 52 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 3740. Up to 598 conditions per place. [2024-06-28 03:40:42,037 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 25 changer transitions 0/168 dead transitions. [2024-06-28 03:40:42,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 168 transitions, 1570 flow [2024-06-28 03:40:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:40:42,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 03:40:42,038 INFO L175 Difference]: Start difference. First operand has 174 places, 152 transitions, 1152 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:40:42,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 168 transitions, 1570 flow [2024-06-28 03:40:42,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 168 transitions, 1516 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:42,082 INFO L231 Difference]: Finished difference. Result has 177 places, 154 transitions, 1211 flow [2024-06-28 03:40:42,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1211, PETRI_PLACES=177, PETRI_TRANSITIONS=154} [2024-06-28 03:40:42,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-28 03:40:42,083 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 154 transitions, 1211 flow [2024-06-28 03:40:42,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:42,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:42,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:42,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:40:42,084 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)] === [2024-06-28 03:40:42,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:42,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1097303747, now seen corresponding path program 4 times [2024-06-28 03:40:42,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:42,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085421458] [2024-06-28 03:40:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:42,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085421458] [2024-06-28 03:40:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085421458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:42,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:42,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:42,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960023238] [2024-06-28 03:40:42,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:42,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:42,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:42,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:42,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:42,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 154 transitions, 1211 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:42,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:42,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:42,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:43,149 INFO L124 PetriNetUnfolderBase]: 362/701 cut-off events. [2024-06-28 03:40:43,150 INFO L125 PetriNetUnfolderBase]: For 21164/21164 co-relation queries the response was YES. [2024-06-28 03:40:43,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 701 events. 362/701 cut-off events. For 21164/21164 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3603 event pairs, 66 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 3837. Up to 618 conditions per place. [2024-06-28 03:40:43,154 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 21 changer transitions 0/170 dead transitions. [2024-06-28 03:40:43,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 170 transitions, 1611 flow [2024-06-28 03:40:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:40:43,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:40:43,155 INFO L175 Difference]: Start difference. First operand has 177 places, 154 transitions, 1211 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:40:43,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 170 transitions, 1611 flow [2024-06-28 03:40:43,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 170 transitions, 1514 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:43,206 INFO L231 Difference]: Finished difference. Result has 178 places, 157 transitions, 1198 flow [2024-06-28 03:40:43,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1198, PETRI_PLACES=178, PETRI_TRANSITIONS=157} [2024-06-28 03:40:43,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-28 03:40:43,206 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 157 transitions, 1198 flow [2024-06-28 03:40:43,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:43,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:43,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:43,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:40:43,207 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)] === [2024-06-28 03:40:43,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash 898001957, now seen corresponding path program 5 times [2024-06-28 03:40:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:43,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772147480] [2024-06-28 03:40:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:43,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:43,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772147480] [2024-06-28 03:40:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772147480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255255862] [2024-06-28 03:40:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:43,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:43,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:43,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 157 transitions, 1198 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:43,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:43,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:43,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:44,071 INFO L124 PetriNetUnfolderBase]: 366/709 cut-off events. [2024-06-28 03:40:44,072 INFO L125 PetriNetUnfolderBase]: For 22031/22031 co-relation queries the response was YES. [2024-06-28 03:40:44,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 709 events. 366/709 cut-off events. For 22031/22031 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3664 event pairs, 66 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 3866. Up to 626 conditions per place. [2024-06-28 03:40:44,076 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 21 changer transitions 0/171 dead transitions. [2024-06-28 03:40:44,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 171 transitions, 1586 flow [2024-06-28 03:40:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:40:44,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:40:44,077 INFO L175 Difference]: Start difference. First operand has 178 places, 157 transitions, 1198 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:40:44,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 171 transitions, 1586 flow [2024-06-28 03:40:44,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 171 transitions, 1528 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:44,133 INFO L231 Difference]: Finished difference. Result has 181 places, 158 transitions, 1210 flow [2024-06-28 03:40:44,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1210, PETRI_PLACES=181, PETRI_TRANSITIONS=158} [2024-06-28 03:40:44,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-28 03:40:44,134 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 158 transitions, 1210 flow [2024-06-28 03:40:44,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:44,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:44,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:44,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:40:44,134 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)] === [2024-06-28 03:40:44,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash -950914925, now seen corresponding path program 6 times [2024-06-28 03:40:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:44,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759001000] [2024-06-28 03:40:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:44,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:44,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:44,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759001000] [2024-06-28 03:40:44,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759001000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:44,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:44,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:44,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751198800] [2024-06-28 03:40:44,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:44,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:44,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:44,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:44,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 158 transitions, 1210 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:44,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:44,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:44,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:45,077 INFO L124 PetriNetUnfolderBase]: 370/716 cut-off events. [2024-06-28 03:40:45,078 INFO L125 PetriNetUnfolderBase]: For 22965/22965 co-relation queries the response was YES. [2024-06-28 03:40:45,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4000 conditions, 716 events. 370/716 cut-off events. For 22965/22965 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3703 event pairs, 56 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 3919. Up to 586 conditions per place. [2024-06-28 03:40:45,082 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 135 selfloop transitions, 34 changer transitions 0/173 dead transitions. [2024-06-28 03:40:45,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 173 transitions, 1606 flow [2024-06-28 03:40:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:45,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 03:40:45,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 03:40:45,084 INFO L175 Difference]: Start difference. First operand has 181 places, 158 transitions, 1210 flow. Second operand 10 states and 134 transitions. [2024-06-28 03:40:45,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 173 transitions, 1606 flow [2024-06-28 03:40:45,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 173 transitions, 1538 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:45,130 INFO L231 Difference]: Finished difference. Result has 182 places, 159 transitions, 1240 flow [2024-06-28 03:40:45,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1240, PETRI_PLACES=182, PETRI_TRANSITIONS=159} [2024-06-28 03:40:45,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-28 03:40:45,131 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 159 transitions, 1240 flow [2024-06-28 03:40:45,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:45,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:45,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:45,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:40:45,132 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)] === [2024-06-28 03:40:45,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 296780243, now seen corresponding path program 7 times [2024-06-28 03:40:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:45,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65363355] [2024-06-28 03:40:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65363355] [2024-06-28 03:40:45,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65363355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:45,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:45,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:45,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092633024] [2024-06-28 03:40:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:45,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:45,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:45,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 159 transitions, 1240 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:45,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:45,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:45,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:46,155 INFO L124 PetriNetUnfolderBase]: 374/725 cut-off events. [2024-06-28 03:40:46,156 INFO L125 PetriNetUnfolderBase]: For 24047/24047 co-relation queries the response was YES. [2024-06-28 03:40:46,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 725 events. 374/725 cut-off events. For 24047/24047 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3759 event pairs, 61 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 3998. Up to 621 conditions per place. [2024-06-28 03:40:46,160 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 153 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2024-06-28 03:40:46,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 178 transitions, 1660 flow [2024-06-28 03:40:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:40:46,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:40:46,162 INFO L175 Difference]: Start difference. First operand has 182 places, 159 transitions, 1240 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:40:46,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 178 transitions, 1660 flow [2024-06-28 03:40:46,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 178 transitions, 1572 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:46,219 INFO L231 Difference]: Finished difference. Result has 184 places, 160 transitions, 1226 flow [2024-06-28 03:40:46,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1226, PETRI_PLACES=184, PETRI_TRANSITIONS=160} [2024-06-28 03:40:46,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-28 03:40:46,220 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 160 transitions, 1226 flow [2024-06-28 03:40:46,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:46,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:46,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:46,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:40:46,220 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)] === [2024-06-28 03:40:46,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:46,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1242580943, now seen corresponding path program 8 times [2024-06-28 03:40:46,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006425302] [2024-06-28 03:40:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:46,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:46,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006425302] [2024-06-28 03:40:46,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006425302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:46,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:46,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:46,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163585421] [2024-06-28 03:40:46,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:46,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:46,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:46,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:46,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:46,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:46,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 160 transitions, 1226 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:46,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:46,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:46,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:47,091 INFO L124 PetriNetUnfolderBase]: 378/735 cut-off events. [2024-06-28 03:40:47,092 INFO L125 PetriNetUnfolderBase]: For 25120/25120 co-relation queries the response was YES. [2024-06-28 03:40:47,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4113 conditions, 735 events. 378/735 cut-off events. For 25120/25120 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3834 event pairs, 67 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4031. Up to 643 conditions per place. [2024-06-28 03:40:47,097 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 149 selfloop transitions, 23 changer transitions 0/176 dead transitions. [2024-06-28 03:40:47,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 176 transitions, 1636 flow [2024-06-28 03:40:47,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:40:47,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:40:47,098 INFO L175 Difference]: Start difference. First operand has 184 places, 160 transitions, 1226 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:40:47,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 176 transitions, 1636 flow [2024-06-28 03:40:47,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 176 transitions, 1572 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:47,167 INFO L231 Difference]: Finished difference. Result has 186 places, 161 transitions, 1242 flow [2024-06-28 03:40:47,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1242, PETRI_PLACES=186, PETRI_TRANSITIONS=161} [2024-06-28 03:40:47,167 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-28 03:40:47,167 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1242 flow [2024-06-28 03:40:47,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:47,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:47,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:47,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:40:47,168 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)] === [2024-06-28 03:40:47,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1270138703, now seen corresponding path program 9 times [2024-06-28 03:40:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:47,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307791026] [2024-06-28 03:40:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:47,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307791026] [2024-06-28 03:40:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307791026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:47,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:47,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:47,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563881119] [2024-06-28 03:40:47,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:47,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:47,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:47,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 161 transitions, 1242 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:47,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:47,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:47,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:48,118 INFO L124 PetriNetUnfolderBase]: 382/743 cut-off events. [2024-06-28 03:40:48,119 INFO L125 PetriNetUnfolderBase]: For 26156/26156 co-relation queries the response was YES. [2024-06-28 03:40:48,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4170 conditions, 743 events. 382/743 cut-off events. For 26156/26156 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3900 event pairs, 66 based on Foata normal form. 2/744 useless extension candidates. Maximal degree in co-relation 4087. Up to 637 conditions per place. [2024-06-28 03:40:48,123 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 24 changer transitions 0/178 dead transitions. [2024-06-28 03:40:48,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 178 transitions, 1660 flow [2024-06-28 03:40:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:40:48,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:40:48,125 INFO L175 Difference]: Start difference. First operand has 186 places, 161 transitions, 1242 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:40:48,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 178 transitions, 1660 flow [2024-06-28 03:40:48,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 178 transitions, 1590 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:48,191 INFO L231 Difference]: Finished difference. Result has 188 places, 162 transitions, 1256 flow [2024-06-28 03:40:48,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1256, PETRI_PLACES=188, PETRI_TRANSITIONS=162} [2024-06-28 03:40:48,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-28 03:40:48,192 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 162 transitions, 1256 flow [2024-06-28 03:40:48,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:48,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:48,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:48,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:40:48,192 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)] === [2024-06-28 03:40:48,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash -122359903, now seen corresponding path program 10 times [2024-06-28 03:40:48,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:48,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275312096] [2024-06-28 03:40:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:48,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:48,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275312096] [2024-06-28 03:40:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275312096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:48,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902070635] [2024-06-28 03:40:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:48,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:48,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:48,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:48,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:48,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:48,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 162 transitions, 1256 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:48,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:48,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:48,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:49,187 INFO L124 PetriNetUnfolderBase]: 386/751 cut-off events. [2024-06-28 03:40:49,188 INFO L125 PetriNetUnfolderBase]: For 27168/27168 co-relation queries the response was YES. [2024-06-28 03:40:49,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 751 events. 386/751 cut-off events. For 27168/27168 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3955 event pairs, 38 based on Foata normal form. 2/752 useless extension candidates. Maximal degree in co-relation 4147. Up to 610 conditions per place. [2024-06-28 03:40:49,193 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 153 selfloop transitions, 24 changer transitions 0/181 dead transitions. [2024-06-28 03:40:49,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 181 transitions, 1686 flow [2024-06-28 03:40:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:40:49,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:40:49,194 INFO L175 Difference]: Start difference. First operand has 188 places, 162 transitions, 1256 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:40:49,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 181 transitions, 1686 flow [2024-06-28 03:40:49,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 181 transitions, 1612 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:49,269 INFO L231 Difference]: Finished difference. Result has 190 places, 163 transitions, 1268 flow [2024-06-28 03:40:49,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1268, PETRI_PLACES=190, PETRI_TRANSITIONS=163} [2024-06-28 03:40:49,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-28 03:40:49,269 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 163 transitions, 1268 flow [2024-06-28 03:40:49,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:49,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:49,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:49,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:40:49,270 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)] === [2024-06-28 03:40:49,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:49,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1242586895, now seen corresponding path program 2 times [2024-06-28 03:40:49,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:49,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791234335] [2024-06-28 03:40:49,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:49,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:50,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:50,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791234335] [2024-06-28 03:40:50,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791234335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:50,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:50,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194657043] [2024-06-28 03:40:50,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:50,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:50,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:50,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:50,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 163 transitions, 1268 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:50,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:50,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:50,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:50,530 INFO L124 PetriNetUnfolderBase]: 395/766 cut-off events. [2024-06-28 03:40:50,530 INFO L125 PetriNetUnfolderBase]: For 28747/28747 co-relation queries the response was YES. [2024-06-28 03:40:50,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4367 conditions, 766 events. 395/766 cut-off events. For 28747/28747 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4052 event pairs, 71 based on Foata normal form. 2/767 useless extension candidates. Maximal degree in co-relation 4282. Up to 671 conditions per place. [2024-06-28 03:40:50,534 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 26 changer transitions 0/183 dead transitions. [2024-06-28 03:40:50,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 183 transitions, 1752 flow [2024-06-28 03:40:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:40:50,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:40:50,536 INFO L175 Difference]: Start difference. First operand has 190 places, 163 transitions, 1268 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:40:50,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 183 transitions, 1752 flow [2024-06-28 03:40:50,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 183 transitions, 1676 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:50,593 INFO L231 Difference]: Finished difference. Result has 194 places, 167 transitions, 1336 flow [2024-06-28 03:40:50,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1336, PETRI_PLACES=194, PETRI_TRANSITIONS=167} [2024-06-28 03:40:50,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-28 03:40:50,594 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 167 transitions, 1336 flow [2024-06-28 03:40:50,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:50,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:50,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:50,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:40:50,595 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)] === [2024-06-28 03:40:50,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:50,595 INFO L85 PathProgramCache]: Analyzing trace with hash 96015025, now seen corresponding path program 1 times [2024-06-28 03:40:50,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:50,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424461895] [2024-06-28 03:40:50,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:50,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424461895] [2024-06-28 03:40:51,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424461895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:51,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:51,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:51,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908515540] [2024-06-28 03:40:51,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:51,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:51,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:51,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:51,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:51,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:51,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 167 transitions, 1336 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:51,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:51,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:51,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:51,897 INFO L124 PetriNetUnfolderBase]: 418/815 cut-off events. [2024-06-28 03:40:51,897 INFO L125 PetriNetUnfolderBase]: For 43729/43729 co-relation queries the response was YES. [2024-06-28 03:40:51,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 815 events. 418/815 cut-off events. For 43729/43729 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4356 event pairs, 85 based on Foata normal form. 13/827 useless extension candidates. Maximal degree in co-relation 4614. Up to 664 conditions per place. [2024-06-28 03:40:51,904 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 150 selfloop transitions, 25 changer transitions 10/189 dead transitions. [2024-06-28 03:40:51,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 189 transitions, 1910 flow [2024-06-28 03:40:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:40:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:40:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 03:40:51,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:40:51,906 INFO L175 Difference]: Start difference. First operand has 194 places, 167 transitions, 1336 flow. Second operand 12 states and 160 transitions. [2024-06-28 03:40:51,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 189 transitions, 1910 flow [2024-06-28 03:40:51,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 189 transitions, 1808 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:51,997 INFO L231 Difference]: Finished difference. Result has 199 places, 164 transitions, 1291 flow [2024-06-28 03:40:51,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1291, PETRI_PLACES=199, PETRI_TRANSITIONS=164} [2024-06-28 03:40:51,998 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-28 03:40:51,998 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 164 transitions, 1291 flow [2024-06-28 03:40:51,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:51,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:51,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:51,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:40:51,999 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)] === [2024-06-28 03:40:51,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1972404093, now seen corresponding path program 11 times [2024-06-28 03:40:51,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:51,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47413956] [2024-06-28 03:40:52,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:52,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47413956] [2024-06-28 03:40:52,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47413956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:52,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:52,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:52,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890192549] [2024-06-28 03:40:52,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:52,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:52,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:52,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:52,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:52,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:52,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 164 transitions, 1291 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:52,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:52,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:52,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:53,130 INFO L124 PetriNetUnfolderBase]: 396/773 cut-off events. [2024-06-28 03:40:53,131 INFO L125 PetriNetUnfolderBase]: For 31503/31503 co-relation queries the response was YES. [2024-06-28 03:40:53,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4449 conditions, 773 events. 396/773 cut-off events. For 31503/31503 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4116 event pairs, 74 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 4360. Up to 657 conditions per place. [2024-06-28 03:40:53,136 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 142 selfloop transitions, 32 changer transitions 0/178 dead transitions. [2024-06-28 03:40:53,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 178 transitions, 1705 flow [2024-06-28 03:40:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 03:40:53,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-28 03:40:53,137 INFO L175 Difference]: Start difference. First operand has 199 places, 164 transitions, 1291 flow. Second operand 9 states and 119 transitions. [2024-06-28 03:40:53,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 178 transitions, 1705 flow [2024-06-28 03:40:53,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 178 transitions, 1627 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-28 03:40:53,218 INFO L231 Difference]: Finished difference. Result has 194 places, 165 transitions, 1321 flow [2024-06-28 03:40:53,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1321, PETRI_PLACES=194, PETRI_TRANSITIONS=165} [2024-06-28 03:40:53,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-28 03:40:53,218 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 165 transitions, 1321 flow [2024-06-28 03:40:53,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:53,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:53,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:53,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:40:53,219 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)] === [2024-06-28 03:40:53,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash 340418729, now seen corresponding path program 12 times [2024-06-28 03:40:53,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:53,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196713611] [2024-06-28 03:40:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:53,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:53,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:53,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196713611] [2024-06-28 03:40:53,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196713611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:53,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:53,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:53,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201924058] [2024-06-28 03:40:53,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:53,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:53,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:53,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:53,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:53,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 165 transitions, 1321 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:53,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:53,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:53,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:54,236 INFO L124 PetriNetUnfolderBase]: 400/779 cut-off events. [2024-06-28 03:40:54,236 INFO L125 PetriNetUnfolderBase]: For 32016/32016 co-relation queries the response was YES. [2024-06-28 03:40:54,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 779 events. 400/779 cut-off events. For 32016/32016 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4149 event pairs, 67 based on Foata normal form. 2/780 useless extension candidates. Maximal degree in co-relation 4431. Up to 623 conditions per place. [2024-06-28 03:40:54,242 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 141 selfloop transitions, 35 changer transitions 0/180 dead transitions. [2024-06-28 03:40:54,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 180 transitions, 1743 flow [2024-06-28 03:40:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 03:40:54,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-28 03:40:54,243 INFO L175 Difference]: Start difference. First operand has 194 places, 165 transitions, 1321 flow. Second operand 9 states and 121 transitions. [2024-06-28 03:40:54,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 180 transitions, 1743 flow [2024-06-28 03:40:54,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 180 transitions, 1645 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:54,311 INFO L231 Difference]: Finished difference. Result has 196 places, 166 transitions, 1339 flow [2024-06-28 03:40:54,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1339, PETRI_PLACES=196, PETRI_TRANSITIONS=166} [2024-06-28 03:40:54,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-28 03:40:54,313 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 166 transitions, 1339 flow [2024-06-28 03:40:54,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:54,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:54,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:54,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:40:54,313 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)] === [2024-06-28 03:40:54,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:54,314 INFO L85 PathProgramCache]: Analyzing trace with hash -21295759, now seen corresponding path program 13 times [2024-06-28 03:40:54,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:54,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474917953] [2024-06-28 03:40:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:54,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:55,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:55,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474917953] [2024-06-28 03:40:55,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474917953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:55,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:55,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:55,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613066590] [2024-06-28 03:40:55,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:55,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:55,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:55,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:55,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 166 transitions, 1339 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:55,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:55,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:55,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:55,403 INFO L124 PetriNetUnfolderBase]: 404/787 cut-off events. [2024-06-28 03:40:55,403 INFO L125 PetriNetUnfolderBase]: For 30894/30894 co-relation queries the response was YES. [2024-06-28 03:40:55,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 787 events. 404/787 cut-off events. For 30894/30894 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4216 event pairs, 43 based on Foata normal form. 2/788 useless extension candidates. Maximal degree in co-relation 4459. Up to 600 conditions per place. [2024-06-28 03:40:55,409 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-06-28 03:40:55,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 182 transitions, 1765 flow [2024-06-28 03:40:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:55,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 03:40:55,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-28 03:40:55,410 INFO L175 Difference]: Start difference. First operand has 196 places, 166 transitions, 1339 flow. Second operand 9 states and 118 transitions. [2024-06-28 03:40:55,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 182 transitions, 1765 flow [2024-06-28 03:40:55,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 182 transitions, 1663 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:55,479 INFO L231 Difference]: Finished difference. Result has 198 places, 167 transitions, 1341 flow [2024-06-28 03:40:55,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1341, PETRI_PLACES=198, PETRI_TRANSITIONS=167} [2024-06-28 03:40:55,479 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-28 03:40:55,479 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 167 transitions, 1341 flow [2024-06-28 03:40:55,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:55,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:55,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:55,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:40:55,480 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)] === [2024-06-28 03:40:55,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash -380374427, now seen corresponding path program 14 times [2024-06-28 03:40:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:55,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620809016] [2024-06-28 03:40:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:55,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:56,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620809016] [2024-06-28 03:40:56,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620809016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:56,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:56,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:56,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955296791] [2024-06-28 03:40:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:56,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:56,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:56,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:56,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 167 transitions, 1341 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:56,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:56,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:56,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:56,690 INFO L124 PetriNetUnfolderBase]: 411/804 cut-off events. [2024-06-28 03:40:56,690 INFO L125 PetriNetUnfolderBase]: For 29758/29758 co-relation queries the response was YES. [2024-06-28 03:40:56,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 804 events. 411/804 cut-off events. For 29758/29758 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4341 event pairs, 89 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 4501. Up to 696 conditions per place. [2024-06-28 03:40:56,696 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 30 changer transitions 0/183 dead transitions. [2024-06-28 03:40:56,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 183 transitions, 1798 flow [2024-06-28 03:40:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 03:40:56,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-28 03:40:56,697 INFO L175 Difference]: Start difference. First operand has 198 places, 167 transitions, 1341 flow. Second operand 9 states and 118 transitions. [2024-06-28 03:40:56,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 183 transitions, 1798 flow [2024-06-28 03:40:56,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 183 transitions, 1708 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:56,774 INFO L231 Difference]: Finished difference. Result has 201 places, 172 transitions, 1402 flow [2024-06-28 03:40:56,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1402, PETRI_PLACES=201, PETRI_TRANSITIONS=172} [2024-06-28 03:40:56,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-28 03:40:56,775 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 172 transitions, 1402 flow [2024-06-28 03:40:56,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:56,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:56,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:56,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:40:56,776 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)] === [2024-06-28 03:40:56,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:56,776 INFO L85 PathProgramCache]: Analyzing trace with hash 459323561, now seen corresponding path program 15 times [2024-06-28 03:40:56,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:56,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825807378] [2024-06-28 03:40:56,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:56,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:57,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:57,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825807378] [2024-06-28 03:40:57,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825807378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:57,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:57,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:57,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939728407] [2024-06-28 03:40:57,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:57,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:57,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:57,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:57,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:57,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:57,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 172 transitions, 1402 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:57,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:57,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:57,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:57,750 INFO L124 PetriNetUnfolderBase]: 422/825 cut-off events. [2024-06-28 03:40:57,750 INFO L125 PetriNetUnfolderBase]: For 30488/30488 co-relation queries the response was YES. [2024-06-28 03:40:57,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4799 conditions, 825 events. 422/825 cut-off events. For 30488/30488 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4486 event pairs, 86 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 4708. Up to 674 conditions per place. [2024-06-28 03:40:57,756 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 34 changer transitions 0/187 dead transitions. [2024-06-28 03:40:57,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 187 transitions, 1952 flow [2024-06-28 03:40:57,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 03:40:57,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:40:57,769 INFO L175 Difference]: Start difference. First operand has 201 places, 172 transitions, 1402 flow. Second operand 9 states and 120 transitions. [2024-06-28 03:40:57,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 187 transitions, 1952 flow [2024-06-28 03:40:57,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 187 transitions, 1874 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 03:40:57,840 INFO L231 Difference]: Finished difference. Result has 206 places, 174 transitions, 1458 flow [2024-06-28 03:40:57,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1458, PETRI_PLACES=206, PETRI_TRANSITIONS=174} [2024-06-28 03:40:57,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-28 03:40:57,841 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 174 transitions, 1458 flow [2024-06-28 03:40:57,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:57,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:57,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:57,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:40:57,841 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)] === [2024-06-28 03:40:57,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:57,842 INFO L85 PathProgramCache]: Analyzing trace with hash 658773221, now seen corresponding path program 16 times [2024-06-28 03:40:57,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:57,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474613792] [2024-06-28 03:40:57,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:57,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:58,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:58,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474613792] [2024-06-28 03:40:58,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474613792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:58,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:58,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:58,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411559864] [2024-06-28 03:40:58,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:58,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:58,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:58,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:58,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:58,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:58,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 174 transitions, 1458 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:58,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:58,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:58,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:58,852 INFO L124 PetriNetUnfolderBase]: 419/820 cut-off events. [2024-06-28 03:40:58,853 INFO L125 PetriNetUnfolderBase]: For 27568/27568 co-relation queries the response was YES. [2024-06-28 03:40:58,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4622 conditions, 820 events. 419/820 cut-off events. For 27568/27568 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4446 event pairs, 89 based on Foata normal form. 2/821 useless extension candidates. Maximal degree in co-relation 4530. Up to 712 conditions per place. [2024-06-28 03:40:58,858 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 151 selfloop transitions, 30 changer transitions 0/185 dead transitions. [2024-06-28 03:40:58,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 185 transitions, 1846 flow [2024-06-28 03:40:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 03:40:58,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-28 03:40:58,860 INFO L175 Difference]: Start difference. First operand has 206 places, 174 transitions, 1458 flow. Second operand 9 states and 118 transitions. [2024-06-28 03:40:58,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 185 transitions, 1846 flow [2024-06-28 03:40:58,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 185 transitions, 1769 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:58,931 INFO L231 Difference]: Finished difference. Result has 210 places, 174 transitions, 1447 flow [2024-06-28 03:40:58,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1447, PETRI_PLACES=210, PETRI_TRANSITIONS=174} [2024-06-28 03:40:58,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-28 03:40:58,932 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 174 transitions, 1447 flow [2024-06-28 03:40:58,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:58,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:58,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:58,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:40:58,933 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)] === [2024-06-28 03:40:58,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:58,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1972398141, now seen corresponding path program 3 times [2024-06-28 03:40:58,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:58,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113870031] [2024-06-28 03:40:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:58,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:59,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:59,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113870031] [2024-06-28 03:40:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113870031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:59,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:59,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288682946] [2024-06-28 03:40:59,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:59,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:59,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:40:59,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 174 transitions, 1447 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:40:59,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:59,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:40:59,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:00,071 INFO L124 PetriNetUnfolderBase]: 417/817 cut-off events. [2024-06-28 03:41:00,071 INFO L125 PetriNetUnfolderBase]: For 25580/25580 co-relation queries the response was YES. [2024-06-28 03:41:00,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 817 events. 417/817 cut-off events. For 25580/25580 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4447 event pairs, 79 based on Foata normal form. 1/817 useless extension candidates. Maximal degree in co-relation 4433. Up to 699 conditions per place. [2024-06-28 03:41:00,077 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 40 changer transitions 0/190 dead transitions. [2024-06-28 03:41:00,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 190 transitions, 1925 flow [2024-06-28 03:41:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:41:00,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:00,093 INFO L175 Difference]: Start difference. First operand has 210 places, 174 transitions, 1447 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:41:00,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 190 transitions, 1925 flow [2024-06-28 03:41:00,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 190 transitions, 1853 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:00,155 INFO L231 Difference]: Finished difference. Result has 212 places, 177 transitions, 1545 flow [2024-06-28 03:41:00,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1545, PETRI_PLACES=212, PETRI_TRANSITIONS=177} [2024-06-28 03:41:00,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-28 03:41:00,156 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 177 transitions, 1545 flow [2024-06-28 03:41:00,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:00,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:00,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:00,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:41:00,156 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)] === [2024-06-28 03:41:00,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:00,156 INFO L85 PathProgramCache]: Analyzing trace with hash -32575357, now seen corresponding path program 17 times [2024-06-28 03:41:00,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:00,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710295190] [2024-06-28 03:41:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:00,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:00,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:00,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710295190] [2024-06-28 03:41:00,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710295190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:00,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:00,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:00,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591556414] [2024-06-28 03:41:00,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:00,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:00,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:00,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:00,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:00,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:00,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 177 transitions, 1545 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:00,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:00,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:00,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:01,201 INFO L124 PetriNetUnfolderBase]: 421/825 cut-off events. [2024-06-28 03:41:01,202 INFO L125 PetriNetUnfolderBase]: For 28031/28031 co-relation queries the response was YES. [2024-06-28 03:41:01,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4644 conditions, 825 events. 421/825 cut-off events. For 28031/28031 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4523 event pairs, 88 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 4550. Up to 697 conditions per place. [2024-06-28 03:41:01,207 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 37 changer transitions 0/190 dead transitions. [2024-06-28 03:41:01,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 190 transitions, 2012 flow [2024-06-28 03:41:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 03:41:01,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-28 03:41:01,208 INFO L175 Difference]: Start difference. First operand has 212 places, 177 transitions, 1545 flow. Second operand 9 states and 118 transitions. [2024-06-28 03:41:01,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 190 transitions, 2012 flow [2024-06-28 03:41:01,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 190 transitions, 1874 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:01,269 INFO L231 Difference]: Finished difference. Result has 214 places, 180 transitions, 1547 flow [2024-06-28 03:41:01,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=214, PETRI_TRANSITIONS=180} [2024-06-28 03:41:01,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-28 03:41:01,270 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 180 transitions, 1547 flow [2024-06-28 03:41:01,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:01,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:01,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:01,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:41:01,270 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)] === [2024-06-28 03:41:01,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1716429595, now seen corresponding path program 18 times [2024-06-28 03:41:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:01,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431944447] [2024-06-28 03:41:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:01,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:01,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:01,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431944447] [2024-06-28 03:41:01,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431944447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:01,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:01,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:01,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99170456] [2024-06-28 03:41:01,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:01,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:01,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:01,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:01,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:02,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:02,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 180 transitions, 1547 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:02,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:02,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:02,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:02,255 INFO L124 PetriNetUnfolderBase]: 428/842 cut-off events. [2024-06-28 03:41:02,256 INFO L125 PetriNetUnfolderBase]: For 28205/28205 co-relation queries the response was YES. [2024-06-28 03:41:02,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 842 events. 428/842 cut-off events. For 28205/28205 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4644 event pairs, 90 based on Foata normal form. 2/841 useless extension candidates. Maximal degree in co-relation 4607. Up to 709 conditions per place. [2024-06-28 03:41:02,271 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 154 selfloop transitions, 35 changer transitions 0/193 dead transitions. [2024-06-28 03:41:02,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 193 transitions, 2015 flow [2024-06-28 03:41:02,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 03:41:02,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:41:02,272 INFO L175 Difference]: Start difference. First operand has 214 places, 180 transitions, 1547 flow. Second operand 9 states and 120 transitions. [2024-06-28 03:41:02,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 193 transitions, 2015 flow [2024-06-28 03:41:02,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 193 transitions, 1891 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:41:02,334 INFO L231 Difference]: Finished difference. Result has 218 places, 184 transitions, 1576 flow [2024-06-28 03:41:02,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1576, PETRI_PLACES=218, PETRI_TRANSITIONS=184} [2024-06-28 03:41:02,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-28 03:41:02,334 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 184 transitions, 1576 flow [2024-06-28 03:41:02,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:02,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:02,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:02,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:41:02,335 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)] === [2024-06-28 03:41:02,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1477540127, now seen corresponding path program 19 times [2024-06-28 03:41:02,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:02,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563244087] [2024-06-28 03:41:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:02,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563244087] [2024-06-28 03:41:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563244087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:03,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651813077] [2024-06-28 03:41:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:03,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:03,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:03,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 184 transitions, 1576 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:03,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:03,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:03,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:03,456 INFO L124 PetriNetUnfolderBase]: 432/848 cut-off events. [2024-06-28 03:41:03,456 INFO L125 PetriNetUnfolderBase]: For 29343/29343 co-relation queries the response was YES. [2024-06-28 03:41:03,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 848 events. 432/848 cut-off events. For 29343/29343 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4678 event pairs, 92 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4658. Up to 717 conditions per place. [2024-06-28 03:41:03,461 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 154 selfloop transitions, 37 changer transitions 0/195 dead transitions. [2024-06-28 03:41:03,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 195 transitions, 2020 flow [2024-06-28 03:41:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 03:41:03,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-28 03:41:03,462 INFO L175 Difference]: Start difference. First operand has 218 places, 184 transitions, 1576 flow. Second operand 9 states and 119 transitions. [2024-06-28 03:41:03,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 195 transitions, 2020 flow [2024-06-28 03:41:03,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 195 transitions, 1904 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:41:03,527 INFO L231 Difference]: Finished difference. Result has 221 places, 186 transitions, 1582 flow [2024-06-28 03:41:03,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=221, PETRI_TRANSITIONS=186} [2024-06-28 03:41:03,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-28 03:41:03,528 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 186 transitions, 1582 flow [2024-06-28 03:41:03,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:03,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:03,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:03,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:41:03,528 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)] === [2024-06-28 03:41:03,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:03,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1915879255, now seen corresponding path program 20 times [2024-06-28 03:41:03,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:03,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522096977] [2024-06-28 03:41:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:03,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:04,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:04,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522096977] [2024-06-28 03:41:04,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522096977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:04,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896457096] [2024-06-28 03:41:04,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:04,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:04,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:04,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:04,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 186 transitions, 1582 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:04,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:04,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:04,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:04,656 INFO L124 PetriNetUnfolderBase]: 429/843 cut-off events. [2024-06-28 03:41:04,656 INFO L125 PetriNetUnfolderBase]: For 27074/27074 co-relation queries the response was YES. [2024-06-28 03:41:04,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 843 events. 429/843 cut-off events. For 27074/27074 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4659 event pairs, 89 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 4467. Up to 686 conditions per place. [2024-06-28 03:41:04,662 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 40 changer transitions 0/196 dead transitions. [2024-06-28 03:41:04,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 196 transitions, 1988 flow [2024-06-28 03:41:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 03:41:04,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:41:04,663 INFO L175 Difference]: Start difference. First operand has 221 places, 186 transitions, 1582 flow. Second operand 9 states and 120 transitions. [2024-06-28 03:41:04,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 196 transitions, 1988 flow [2024-06-28 03:41:04,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 196 transitions, 1896 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:04,758 INFO L231 Difference]: Finished difference. Result has 225 places, 186 transitions, 1574 flow [2024-06-28 03:41:04,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1574, PETRI_PLACES=225, PETRI_TRANSITIONS=186} [2024-06-28 03:41:04,759 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-28 03:41:04,759 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 186 transitions, 1574 flow [2024-06-28 03:41:04,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:04,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:04,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:04,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:41:04,759 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)] === [2024-06-28 03:41:04,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:04,760 INFO L85 PathProgramCache]: Analyzing trace with hash -181611257, now seen corresponding path program 2 times [2024-06-28 03:41:04,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:04,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330654300] [2024-06-28 03:41:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:04,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:05,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:05,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330654300] [2024-06-28 03:41:05,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330654300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:05,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:05,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:05,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833441684] [2024-06-28 03:41:05,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:05,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:05,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:05,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:05,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 186 transitions, 1574 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:05,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:05,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:05,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:05,873 INFO L124 PetriNetUnfolderBase]: 449/889 cut-off events. [2024-06-28 03:41:05,873 INFO L125 PetriNetUnfolderBase]: For 41979/41979 co-relation queries the response was YES. [2024-06-28 03:41:05,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4834 conditions, 889 events. 449/889 cut-off events. For 41979/41979 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4937 event pairs, 90 based on Foata normal form. 12/900 useless extension candidates. Maximal degree in co-relation 4734. Up to 695 conditions per place. [2024-06-28 03:41:05,880 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 157 selfloop transitions, 38 changer transitions 7/206 dead transitions. [2024-06-28 03:41:05,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 206 transitions, 2164 flow [2024-06-28 03:41:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:05,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:41:05,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 03:41:05,881 INFO L175 Difference]: Start difference. First operand has 225 places, 186 transitions, 1574 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:41:05,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 206 transitions, 2164 flow [2024-06-28 03:41:05,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 206 transitions, 1982 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:05,977 INFO L231 Difference]: Finished difference. Result has 227 places, 185 transitions, 1491 flow [2024-06-28 03:41:05,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1491, PETRI_PLACES=227, PETRI_TRANSITIONS=185} [2024-06-28 03:41:05,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-28 03:41:05,978 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 185 transitions, 1491 flow [2024-06-28 03:41:05,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:05,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:05,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:05,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:41:05,978 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)] === [2024-06-28 03:41:05,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1708795163, now seen corresponding path program 3 times [2024-06-28 03:41:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:05,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221299276] [2024-06-28 03:41:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:05,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:06,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:06,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221299276] [2024-06-28 03:41:06,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221299276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:06,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:06,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:06,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604649412] [2024-06-28 03:41:06,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:06,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:06,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:06,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:07,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:07,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 185 transitions, 1491 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:07,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:07,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:07,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:07,409 INFO L124 PetriNetUnfolderBase]: 457/909 cut-off events. [2024-06-28 03:41:07,410 INFO L125 PetriNetUnfolderBase]: For 44486/44486 co-relation queries the response was YES. [2024-06-28 03:41:07,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4892 conditions, 909 events. 457/909 cut-off events. For 44486/44486 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5094 event pairs, 95 based on Foata normal form. 12/918 useless extension candidates. Maximal degree in co-relation 4792. Up to 641 conditions per place. [2024-06-28 03:41:07,417 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 47 changer transitions 7/205 dead transitions. [2024-06-28 03:41:07,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 205 transitions, 2131 flow [2024-06-28 03:41:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-28 03:41:07,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:41:07,418 INFO L175 Difference]: Start difference. First operand has 227 places, 185 transitions, 1491 flow. Second operand 11 states and 153 transitions. [2024-06-28 03:41:07,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 205 transitions, 2131 flow [2024-06-28 03:41:07,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 205 transitions, 1999 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:07,514 INFO L231 Difference]: Finished difference. Result has 228 places, 184 transitions, 1486 flow [2024-06-28 03:41:07,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1486, PETRI_PLACES=228, PETRI_TRANSITIONS=184} [2024-06-28 03:41:07,514 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-28 03:41:07,514 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 184 transitions, 1486 flow [2024-06-28 03:41:07,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:07,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:07,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:07,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:41:07,515 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)] === [2024-06-28 03:41:07,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1305569189, now seen corresponding path program 4 times [2024-06-28 03:41:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:07,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991868734] [2024-06-28 03:41:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:08,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:08,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991868734] [2024-06-28 03:41:08,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991868734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:08,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:08,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:08,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804452077] [2024-06-28 03:41:08,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:08,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:08,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:08,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:08,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 184 transitions, 1486 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:08,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:08,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:08,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:08,641 INFO L124 PetriNetUnfolderBase]: 465/933 cut-off events. [2024-06-28 03:41:08,642 INFO L125 PetriNetUnfolderBase]: For 42589/42589 co-relation queries the response was YES. [2024-06-28 03:41:08,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 933 events. 465/933 cut-off events. For 42589/42589 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5286 event pairs, 99 based on Foata normal form. 12/942 useless extension candidates. Maximal degree in co-relation 4878. Up to 665 conditions per place. [2024-06-28 03:41:08,649 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 49 changer transitions 7/204 dead transitions. [2024-06-28 03:41:08,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 204 transitions, 2122 flow [2024-06-28 03:41:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-28 03:41:08,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:41:08,650 INFO L175 Difference]: Start difference. First operand has 228 places, 184 transitions, 1486 flow. Second operand 11 states and 152 transitions. [2024-06-28 03:41:08,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 204 transitions, 2122 flow [2024-06-28 03:41:08,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 204 transitions, 2016 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:08,733 INFO L231 Difference]: Finished difference. Result has 230 places, 183 transitions, 1501 flow [2024-06-28 03:41:08,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1501, PETRI_PLACES=230, PETRI_TRANSITIONS=183} [2024-06-28 03:41:08,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-28 03:41:08,734 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 183 transitions, 1501 flow [2024-06-28 03:41:08,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:08,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:08,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:08,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:41:08,735 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)] === [2024-06-28 03:41:08,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1554919859, now seen corresponding path program 5 times [2024-06-28 03:41:08,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:08,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888385649] [2024-06-28 03:41:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:08,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:09,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:09,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888385649] [2024-06-28 03:41:09,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888385649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:09,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:09,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:09,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613384900] [2024-06-28 03:41:09,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:09,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:09,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:09,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:09,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:09,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 183 transitions, 1501 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:09,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:09,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:09,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:09,897 INFO L124 PetriNetUnfolderBase]: 473/957 cut-off events. [2024-06-28 03:41:09,897 INFO L125 PetriNetUnfolderBase]: For 45409/45409 co-relation queries the response was YES. [2024-06-28 03:41:09,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5186 conditions, 957 events. 473/957 cut-off events. For 45409/45409 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5467 event pairs, 103 based on Foata normal form. 12/966 useless extension candidates. Maximal degree in co-relation 5085. Up to 689 conditions per place. [2024-06-28 03:41:09,904 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 134 selfloop transitions, 57 changer transitions 7/202 dead transitions. [2024-06-28 03:41:09,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 202 transitions, 2115 flow [2024-06-28 03:41:09,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 03:41:09,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-28 03:41:09,905 INFO L175 Difference]: Start difference. First operand has 230 places, 183 transitions, 1501 flow. Second operand 11 states and 151 transitions. [2024-06-28 03:41:09,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 202 transitions, 2115 flow [2024-06-28 03:41:09,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 202 transitions, 2003 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:09,999 INFO L231 Difference]: Finished difference. Result has 232 places, 182 transitions, 1528 flow [2024-06-28 03:41:10,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1528, PETRI_PLACES=232, PETRI_TRANSITIONS=182} [2024-06-28 03:41:10,000 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-28 03:41:10,000 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 182 transitions, 1528 flow [2024-06-28 03:41:10,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:10,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:10,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:10,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:41:10,001 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)] === [2024-06-28 03:41:10,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash 536919683, now seen corresponding path program 6 times [2024-06-28 03:41:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:10,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188298863] [2024-06-28 03:41:10,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:10,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188298863] [2024-06-28 03:41:10,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188298863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:10,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:10,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:10,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280392144] [2024-06-28 03:41:10,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:10,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:10,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:10,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:10,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:11,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:11,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 182 transitions, 1528 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:11,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:11,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:11,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:11,390 INFO L124 PetriNetUnfolderBase]: 481/982 cut-off events. [2024-06-28 03:41:11,390 INFO L125 PetriNetUnfolderBase]: For 48275/48275 co-relation queries the response was YES. [2024-06-28 03:41:11,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 982 events. 481/982 cut-off events. For 48275/48275 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5683 event pairs, 158 based on Foata normal form. 12/993 useless extension candidates. Maximal degree in co-relation 5305. Up to 854 conditions per place. [2024-06-28 03:41:11,398 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 17 changer transitions 9/198 dead transitions. [2024-06-28 03:41:11,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 198 transitions, 2052 flow [2024-06-28 03:41:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:41:11,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:41:11,399 INFO L175 Difference]: Start difference. First operand has 232 places, 182 transitions, 1528 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:41:11,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 198 transitions, 2052 flow [2024-06-28 03:41:11,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 198 transitions, 1922 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:11,506 INFO L231 Difference]: Finished difference. Result has 234 places, 178 transitions, 1439 flow [2024-06-28 03:41:11,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1439, PETRI_PLACES=234, PETRI_TRANSITIONS=178} [2024-06-28 03:41:11,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-28 03:41:11,508 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 178 transitions, 1439 flow [2024-06-28 03:41:11,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:11,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:11,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:11,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:41:11,508 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)] === [2024-06-28 03:41:11,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash 547961573, now seen corresponding path program 7 times [2024-06-28 03:41:11,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:11,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215232555] [2024-06-28 03:41:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:11,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:12,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215232555] [2024-06-28 03:41:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215232555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:12,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:12,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:12,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830504683] [2024-06-28 03:41:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:12,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:12,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:12,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:12,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:12,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 178 transitions, 1439 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:12,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:12,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:12,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:12,731 INFO L124 PetriNetUnfolderBase]: 461/944 cut-off events. [2024-06-28 03:41:12,732 INFO L125 PetriNetUnfolderBase]: For 34894/34894 co-relation queries the response was YES. [2024-06-28 03:41:12,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 944 events. 461/944 cut-off events. For 34894/34894 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5447 event pairs, 156 based on Foata normal form. 2/945 useless extension candidates. Maximal degree in co-relation 5033. Up to 850 conditions per place. [2024-06-28 03:41:12,739 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 165 selfloop transitions, 22 changer transitions 0/191 dead transitions. [2024-06-28 03:41:12,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 191 transitions, 1871 flow [2024-06-28 03:41:12,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:41:12,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-28 03:41:12,740 INFO L175 Difference]: Start difference. First operand has 234 places, 178 transitions, 1439 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:41:12,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 191 transitions, 1871 flow [2024-06-28 03:41:12,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 191 transitions, 1801 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-28 03:41:12,837 INFO L231 Difference]: Finished difference. Result has 234 places, 179 transitions, 1453 flow [2024-06-28 03:41:12,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1453, PETRI_PLACES=234, PETRI_TRANSITIONS=179} [2024-06-28 03:41:12,839 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-28 03:41:12,839 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 179 transitions, 1453 flow [2024-06-28 03:41:12,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:12,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:12,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:12,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:41:12,840 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)] === [2024-06-28 03:41:12,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:12,840 INFO L85 PathProgramCache]: Analyzing trace with hash 548347523, now seen corresponding path program 8 times [2024-06-28 03:41:12,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:12,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181084414] [2024-06-28 03:41:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:12,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:13,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:13,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181084414] [2024-06-28 03:41:13,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181084414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:13,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:13,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:13,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615861377] [2024-06-28 03:41:13,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:13,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:13,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:13,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:13,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 179 transitions, 1453 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:13,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:13,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:13,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:14,204 INFO L124 PetriNetUnfolderBase]: 458/939 cut-off events. [2024-06-28 03:41:14,204 INFO L125 PetriNetUnfolderBase]: For 32404/32404 co-relation queries the response was YES. [2024-06-28 03:41:14,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 939 events. 458/939 cut-off events. For 32404/32404 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5403 event pairs, 153 based on Foata normal form. 2/940 useless extension candidates. Maximal degree in co-relation 4872. Up to 831 conditions per place. [2024-06-28 03:41:14,211 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 23 changer transitions 0/193 dead transitions. [2024-06-28 03:41:14,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 193 transitions, 1893 flow [2024-06-28 03:41:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 03:41:14,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-28 03:41:14,212 INFO L175 Difference]: Start difference. First operand has 234 places, 179 transitions, 1453 flow. Second operand 12 states and 146 transitions. [2024-06-28 03:41:14,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 193 transitions, 1893 flow [2024-06-28 03:41:14,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 193 transitions, 1819 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:14,317 INFO L231 Difference]: Finished difference. Result has 236 places, 180 transitions, 1465 flow [2024-06-28 03:41:14,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1465, PETRI_PLACES=236, PETRI_TRANSITIONS=180} [2024-06-28 03:41:14,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-28 03:41:14,317 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 180 transitions, 1465 flow [2024-06-28 03:41:14,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:14,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:14,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:41:14,318 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)] === [2024-06-28 03:41:14,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 52499879, now seen corresponding path program 1 times [2024-06-28 03:41:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:14,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741426711] [2024-06-28 03:41:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:15,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:15,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741426711] [2024-06-28 03:41:15,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741426711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:15,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:15,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:15,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884149634] [2024-06-28 03:41:15,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:15,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:15,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:15,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:15,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:15,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 180 transitions, 1465 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:15,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:15,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:15,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:15,612 INFO L124 PetriNetUnfolderBase]: 469/959 cut-off events. [2024-06-28 03:41:15,612 INFO L125 PetriNetUnfolderBase]: For 35418/35418 co-relation queries the response was YES. [2024-06-28 03:41:15,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 959 events. 469/959 cut-off events. For 35418/35418 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5553 event pairs, 81 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 5021. Up to 843 conditions per place. [2024-06-28 03:41:15,620 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 25 changer transitions 0/199 dead transitions. [2024-06-28 03:41:15,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 199 transitions, 2031 flow [2024-06-28 03:41:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:41:15,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:41:15,621 INFO L175 Difference]: Start difference. First operand has 236 places, 180 transitions, 1465 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:41:15,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 199 transitions, 2031 flow [2024-06-28 03:41:15,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 199 transitions, 1957 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:15,726 INFO L231 Difference]: Finished difference. Result has 237 places, 182 transitions, 1467 flow [2024-06-28 03:41:15,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1467, PETRI_PLACES=237, PETRI_TRANSITIONS=182} [2024-06-28 03:41:15,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-28 03:41:15,727 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 182 transitions, 1467 flow [2024-06-28 03:41:15,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:15,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:15,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:15,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:41:15,728 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)] === [2024-06-28 03:41:15,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1641754855, now seen corresponding path program 2 times [2024-06-28 03:41:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:15,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480565303] [2024-06-28 03:41:15,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:15,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:16,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480565303] [2024-06-28 03:41:16,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480565303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:16,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:16,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:16,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712662609] [2024-06-28 03:41:16,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:16,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:16,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:16,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:16,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:16,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:16,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 182 transitions, 1467 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:16,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:16,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:16,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:16,968 INFO L124 PetriNetUnfolderBase]: 466/956 cut-off events. [2024-06-28 03:41:16,968 INFO L125 PetriNetUnfolderBase]: For 32429/32429 co-relation queries the response was YES. [2024-06-28 03:41:16,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4967 conditions, 956 events. 466/956 cut-off events. For 32429/32429 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5528 event pairs, 86 based on Foata normal form. 2/957 useless extension candidates. Maximal degree in co-relation 4862. Up to 855 conditions per place. [2024-06-28 03:41:16,974 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 169 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2024-06-28 03:41:16,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 197 transitions, 1891 flow [2024-06-28 03:41:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:41:16,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 03:41:16,975 INFO L175 Difference]: Start difference. First operand has 237 places, 182 transitions, 1467 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:41:16,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 197 transitions, 1891 flow [2024-06-28 03:41:17,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 197 transitions, 1845 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:17,086 INFO L231 Difference]: Finished difference. Result has 241 places, 182 transitions, 1473 flow [2024-06-28 03:41:17,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1473, PETRI_PLACES=241, PETRI_TRANSITIONS=182} [2024-06-28 03:41:17,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-28 03:41:17,087 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 182 transitions, 1473 flow [2024-06-28 03:41:17,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:17,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:17,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:17,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:41:17,087 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)] === [2024-06-28 03:41:17,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1960750977, now seen corresponding path program 3 times [2024-06-28 03:41:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:17,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005484360] [2024-06-28 03:41:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:17,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:17,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:17,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005484360] [2024-06-28 03:41:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005484360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:17,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:17,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351588090] [2024-06-28 03:41:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:17,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:17,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:17,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:17,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 182 transitions, 1473 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:17,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:17,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:17,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:18,257 INFO L124 PetriNetUnfolderBase]: 470/964 cut-off events. [2024-06-28 03:41:18,258 INFO L125 PetriNetUnfolderBase]: For 33488/33488 co-relation queries the response was YES. [2024-06-28 03:41:18,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 964 events. 470/964 cut-off events. For 33488/33488 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5607 event pairs, 80 based on Foata normal form. 2/965 useless extension candidates. Maximal degree in co-relation 4918. Up to 827 conditions per place. [2024-06-28 03:41:18,265 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 26 changer transitions 0/200 dead transitions. [2024-06-28 03:41:18,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 200 transitions, 1919 flow [2024-06-28 03:41:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:41:18,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 03:41:18,266 INFO L175 Difference]: Start difference. First operand has 241 places, 182 transitions, 1473 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:41:18,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 200 transitions, 1919 flow [2024-06-28 03:41:18,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 200 transitions, 1869 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:18,376 INFO L231 Difference]: Finished difference. Result has 242 places, 183 transitions, 1493 flow [2024-06-28 03:41:18,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1493, PETRI_PLACES=242, PETRI_TRANSITIONS=183} [2024-06-28 03:41:18,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-28 03:41:18,377 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 183 transitions, 1493 flow [2024-06-28 03:41:18,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:18,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:18,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:18,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:41:18,377 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)] === [2024-06-28 03:41:18,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1284793881, now seen corresponding path program 4 times [2024-06-28 03:41:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918919469] [2024-06-28 03:41:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:19,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:19,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918919469] [2024-06-28 03:41:19,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918919469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:19,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:19,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:19,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199305559] [2024-06-28 03:41:19,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:19,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:19,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:19,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:19,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:19,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 183 transitions, 1493 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:19,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:19,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:19,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:19,529 INFO L124 PetriNetUnfolderBase]: 474/972 cut-off events. [2024-06-28 03:41:19,529 INFO L125 PetriNetUnfolderBase]: For 34020/34020 co-relation queries the response was YES. [2024-06-28 03:41:19,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 972 events. 474/972 cut-off events. For 34020/34020 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5651 event pairs, 80 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 4991. Up to 852 conditions per place. [2024-06-28 03:41:19,537 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 21 changer transitions 0/203 dead transitions. [2024-06-28 03:41:19,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 203 transitions, 1953 flow [2024-06-28 03:41:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:41:19,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:19,540 INFO L175 Difference]: Start difference. First operand has 242 places, 183 transitions, 1493 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:41:19,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 203 transitions, 1953 flow [2024-06-28 03:41:19,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 203 transitions, 1893 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:19,650 INFO L231 Difference]: Finished difference. Result has 244 places, 184 transitions, 1495 flow [2024-06-28 03:41:19,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1495, PETRI_PLACES=244, PETRI_TRANSITIONS=184} [2024-06-28 03:41:19,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-28 03:41:19,651 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 184 transitions, 1495 flow [2024-06-28 03:41:19,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:19,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:19,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:19,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:41:19,651 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)] === [2024-06-28 03:41:19,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:19,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1641761799, now seen corresponding path program 1 times [2024-06-28 03:41:19,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:19,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757935520] [2024-06-28 03:41:19,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:19,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:20,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757935520] [2024-06-28 03:41:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757935520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:20,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:20,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:20,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471150387] [2024-06-28 03:41:20,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:20,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:20,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:20,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:20,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:20,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:20,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 184 transitions, 1495 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:20,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:20,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:20,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:21,215 INFO L124 PetriNetUnfolderBase]: 477/979 cut-off events. [2024-06-28 03:41:21,216 INFO L125 PetriNetUnfolderBase]: For 34007/34007 co-relation queries the response was YES. [2024-06-28 03:41:21,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5171 conditions, 979 events. 477/979 cut-off events. For 34007/34007 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5691 event pairs, 85 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 5062. Up to 876 conditions per place. [2024-06-28 03:41:21,224 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 170 selfloop transitions, 27 changer transitions 0/201 dead transitions. [2024-06-28 03:41:21,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 201 transitions, 1995 flow [2024-06-28 03:41:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:41:21,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 03:41:21,225 INFO L175 Difference]: Start difference. First operand has 244 places, 184 transitions, 1495 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:41:21,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 201 transitions, 1995 flow [2024-06-28 03:41:21,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 201 transitions, 1943 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:21,367 INFO L231 Difference]: Finished difference. Result has 247 places, 186 transitions, 1574 flow [2024-06-28 03:41:21,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1574, PETRI_PLACES=247, PETRI_TRANSITIONS=186} [2024-06-28 03:41:21,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-28 03:41:21,368 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 186 transitions, 1574 flow [2024-06-28 03:41:21,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:21,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:21,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:41:21,369 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)] === [2024-06-28 03:41:21,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:21,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1464642593, now seen corresponding path program 5 times [2024-06-28 03:41:21,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:21,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377000721] [2024-06-28 03:41:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:22,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:22,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377000721] [2024-06-28 03:41:22,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377000721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:22,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:22,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:22,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472600881] [2024-06-28 03:41:22,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:22,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:22,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:22,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:22,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:22,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 186 transitions, 1574 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:22,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:22,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:22,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:22,693 INFO L124 PetriNetUnfolderBase]: 482/992 cut-off events. [2024-06-28 03:41:22,693 INFO L125 PetriNetUnfolderBase]: For 37113/37113 co-relation queries the response was YES. [2024-06-28 03:41:22,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5265 conditions, 992 events. 482/992 cut-off events. For 37113/37113 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5833 event pairs, 106 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 5155. Up to 886 conditions per place. [2024-06-28 03:41:22,701 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 23 changer transitions 0/202 dead transitions. [2024-06-28 03:41:22,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 202 transitions, 2026 flow [2024-06-28 03:41:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:41:22,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:41:22,702 INFO L175 Difference]: Start difference. First operand has 247 places, 186 transitions, 1574 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:41:22,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 202 transitions, 2026 flow [2024-06-28 03:41:22,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 202 transitions, 1911 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:22,865 INFO L231 Difference]: Finished difference. Result has 248 places, 188 transitions, 1533 flow [2024-06-28 03:41:22,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1533, PETRI_PLACES=248, PETRI_TRANSITIONS=188} [2024-06-28 03:41:22,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-28 03:41:22,868 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 188 transitions, 1533 flow [2024-06-28 03:41:22,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:22,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:22,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:22,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:41:22,869 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)] === [2024-06-28 03:41:22,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:22,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1618655631, now seen corresponding path program 6 times [2024-06-28 03:41:22,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:22,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512557071] [2024-06-28 03:41:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:22,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:23,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512557071] [2024-06-28 03:41:23,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512557071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:23,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:23,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10782217] [2024-06-28 03:41:23,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:23,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:23,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:23,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:23,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:23,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:23,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 188 transitions, 1533 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:23,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:23,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:23,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:24,047 INFO L124 PetriNetUnfolderBase]: 486/1000 cut-off events. [2024-06-28 03:41:24,048 INFO L125 PetriNetUnfolderBase]: For 38266/38266 co-relation queries the response was YES. [2024-06-28 03:41:24,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 1000 events. 486/1000 cut-off events. For 38266/38266 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5889 event pairs, 106 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 5157. Up to 880 conditions per place. [2024-06-28 03:41:24,056 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 176 selfloop transitions, 24 changer transitions 0/204 dead transitions. [2024-06-28 03:41:24,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 204 transitions, 1987 flow [2024-06-28 03:41:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:41:24,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:24,057 INFO L175 Difference]: Start difference. First operand has 248 places, 188 transitions, 1533 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:41:24,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 204 transitions, 1987 flow [2024-06-28 03:41:24,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 204 transitions, 1938 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:24,204 INFO L231 Difference]: Finished difference. Result has 252 places, 189 transitions, 1556 flow [2024-06-28 03:41:24,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1556, PETRI_PLACES=252, PETRI_TRANSITIONS=189} [2024-06-28 03:41:24,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-28 03:41:24,205 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 189 transitions, 1556 flow [2024-06-28 03:41:24,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:24,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:24,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:24,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:41:24,205 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)] === [2024-06-28 03:41:24,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:24,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2063673877, now seen corresponding path program 7 times [2024-06-28 03:41:24,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:24,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526314997] [2024-06-28 03:41:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:24,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:24,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:24,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526314997] [2024-06-28 03:41:24,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526314997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:24,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:24,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:24,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294503253] [2024-06-28 03:41:24,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:24,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:24,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:24,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:24,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:25,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:25,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 189 transitions, 1556 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:25,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:25,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:25,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:25,277 INFO L124 PetriNetUnfolderBase]: 497/1021 cut-off events. [2024-06-28 03:41:25,278 INFO L125 PetriNetUnfolderBase]: For 43564/43564 co-relation queries the response was YES. [2024-06-28 03:41:25,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5540 conditions, 1021 events. 497/1021 cut-off events. For 43564/43564 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6028 event pairs, 109 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 5428. Up to 860 conditions per place. [2024-06-28 03:41:25,286 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 26 changer transitions 0/208 dead transitions. [2024-06-28 03:41:25,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 208 transitions, 2172 flow [2024-06-28 03:41:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:41:25,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:41:25,287 INFO L175 Difference]: Start difference. First operand has 252 places, 189 transitions, 1556 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:41:25,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 208 transitions, 2172 flow [2024-06-28 03:41:25,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 208 transitions, 2110 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:25,432 INFO L231 Difference]: Finished difference. Result has 254 places, 191 transitions, 1592 flow [2024-06-28 03:41:25,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1592, PETRI_PLACES=254, PETRI_TRANSITIONS=191} [2024-06-28 03:41:25,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-28 03:41:25,432 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 191 transitions, 1592 flow [2024-06-28 03:41:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:25,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:25,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:25,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:41:25,433 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)] === [2024-06-28 03:41:25,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1327089177, now seen corresponding path program 8 times [2024-06-28 03:41:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:25,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145121745] [2024-06-28 03:41:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:25,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:26,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:26,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145121745] [2024-06-28 03:41:26,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145121745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:26,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:26,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611884305] [2024-06-28 03:41:26,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:26,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:26,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:26,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 191 transitions, 1592 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:26,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:26,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:26,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:26,410 INFO L124 PetriNetUnfolderBase]: 502/1032 cut-off events. [2024-06-28 03:41:26,410 INFO L125 PetriNetUnfolderBase]: For 44835/44835 co-relation queries the response was YES. [2024-06-28 03:41:26,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5620 conditions, 1032 events. 502/1032 cut-off events. For 44835/44835 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6124 event pairs, 113 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 5507. Up to 925 conditions per place. [2024-06-28 03:41:26,419 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 25 changer transitions 0/207 dead transitions. [2024-06-28 03:41:26,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 207 transitions, 2063 flow [2024-06-28 03:41:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:26,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:41:26,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:41:26,420 INFO L175 Difference]: Start difference. First operand has 254 places, 191 transitions, 1592 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:41:26,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 207 transitions, 2063 flow [2024-06-28 03:41:26,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 207 transitions, 2006 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:26,612 INFO L231 Difference]: Finished difference. Result has 258 places, 193 transitions, 1622 flow [2024-06-28 03:41:26,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1622, PETRI_PLACES=258, PETRI_TRANSITIONS=193} [2024-06-28 03:41:26,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-28 03:41:26,613 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 193 transitions, 1622 flow [2024-06-28 03:41:26,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:26,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:26,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:26,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:41:26,613 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)] === [2024-06-28 03:41:26,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash 66453735, now seen corresponding path program 9 times [2024-06-28 03:41:26,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:26,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809991489] [2024-06-28 03:41:26,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:26,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:27,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:27,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809991489] [2024-06-28 03:41:27,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809991489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:27,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:27,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:27,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724851309] [2024-06-28 03:41:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:27,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:27,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 193 transitions, 1622 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:27,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:27,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:27,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:27,668 INFO L124 PetriNetUnfolderBase]: 506/1040 cut-off events. [2024-06-28 03:41:27,669 INFO L125 PetriNetUnfolderBase]: For 45783/45783 co-relation queries the response was YES. [2024-06-28 03:41:27,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5675 conditions, 1040 events. 506/1040 cut-off events. For 45783/45783 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6165 event pairs, 115 based on Foata normal form. 2/1041 useless extension candidates. Maximal degree in co-relation 5560. Up to 933 conditions per place. [2024-06-28 03:41:27,678 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 180 selfloop transitions, 24 changer transitions 0/208 dead transitions. [2024-06-28 03:41:27,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 208 transitions, 2084 flow [2024-06-28 03:41:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:41:27,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:41:27,679 INFO L175 Difference]: Start difference. First operand has 258 places, 193 transitions, 1622 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:41:27,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 208 transitions, 2084 flow [2024-06-28 03:41:27,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 208 transitions, 2024 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:27,855 INFO L231 Difference]: Finished difference. Result has 261 places, 194 transitions, 1636 flow [2024-06-28 03:41:27,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1636, PETRI_PLACES=261, PETRI_TRANSITIONS=194} [2024-06-28 03:41:27,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-28 03:41:27,856 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 194 transitions, 1636 flow [2024-06-28 03:41:27,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:27,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:27,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:27,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:41:27,857 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)] === [2024-06-28 03:41:27,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash 66276105, now seen corresponding path program 10 times [2024-06-28 03:41:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:27,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841486379] [2024-06-28 03:41:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:27,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:28,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:28,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841486379] [2024-06-28 03:41:28,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841486379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:28,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:28,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:28,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783056940] [2024-06-28 03:41:28,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:28,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:28,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:28,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:28,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:28,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 194 transitions, 1636 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:28,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:28,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:28,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:29,008 INFO L124 PetriNetUnfolderBase]: 503/1035 cut-off events. [2024-06-28 03:41:29,008 INFO L125 PetriNetUnfolderBase]: For 42336/42336 co-relation queries the response was YES. [2024-06-28 03:41:29,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 1035 events. 503/1035 cut-off events. For 42336/42336 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6157 event pairs, 112 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 5395. Up to 908 conditions per place. [2024-06-28 03:41:29,017 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 26 changer transitions 0/209 dead transitions. [2024-06-28 03:41:29,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 209 transitions, 2082 flow [2024-06-28 03:41:29,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:41:29,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:29,019 INFO L175 Difference]: Start difference. First operand has 261 places, 194 transitions, 1636 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:41:29,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 209 transitions, 2082 flow [2024-06-28 03:41:29,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 209 transitions, 1997 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:29,177 INFO L231 Difference]: Finished difference. Result has 262 places, 194 transitions, 1607 flow [2024-06-28 03:41:29,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1607, PETRI_PLACES=262, PETRI_TRANSITIONS=194} [2024-06-28 03:41:29,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-28 03:41:29,177 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 194 transitions, 1607 flow [2024-06-28 03:41:29,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:29,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:29,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:29,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:41:29,178 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)] === [2024-06-28 03:41:29,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1318511353, now seen corresponding path program 2 times [2024-06-28 03:41:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:29,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352951020] [2024-06-28 03:41:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:29,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:30,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:30,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352951020] [2024-06-28 03:41:30,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352951020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:30,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:30,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:30,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362956106] [2024-06-28 03:41:30,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:30,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:30,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:30,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:30,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 194 transitions, 1607 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:30,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:30,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:30,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:30,407 INFO L124 PetriNetUnfolderBase]: 506/1039 cut-off events. [2024-06-28 03:41:30,407 INFO L125 PetriNetUnfolderBase]: For 41377/41377 co-relation queries the response was YES. [2024-06-28 03:41:30,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5556 conditions, 1039 events. 506/1039 cut-off events. For 41377/41377 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6175 event pairs, 95 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 5439. Up to 884 conditions per place. [2024-06-28 03:41:30,416 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 154 selfloop transitions, 53 changer transitions 0/211 dead transitions. [2024-06-28 03:41:30,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 211 transitions, 2133 flow [2024-06-28 03:41:30,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:41:30,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:30,417 INFO L175 Difference]: Start difference. First operand has 262 places, 194 transitions, 1607 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:41:30,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 211 transitions, 2133 flow [2024-06-28 03:41:30,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 211 transitions, 2063 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:30,573 INFO L231 Difference]: Finished difference. Result has 265 places, 197 transitions, 1740 flow [2024-06-28 03:41:30,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1740, PETRI_PLACES=265, PETRI_TRANSITIONS=197} [2024-06-28 03:41:30,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-28 03:41:30,574 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 197 transitions, 1740 flow [2024-06-28 03:41:30,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:30,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:30,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:30,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:41:30,575 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)] === [2024-06-28 03:41:30,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:30,575 INFO L85 PathProgramCache]: Analyzing trace with hash -182129463, now seen corresponding path program 11 times [2024-06-28 03:41:30,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:30,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848852328] [2024-06-28 03:41:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:30,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:31,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:31,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848852328] [2024-06-28 03:41:31,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848852328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:31,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:31,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67121205] [2024-06-28 03:41:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:31,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:31,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:31,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:31,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 197 transitions, 1740 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:31,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:31,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:31,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:31,643 INFO L124 PetriNetUnfolderBase]: 510/1048 cut-off events. [2024-06-28 03:41:31,643 INFO L125 PetriNetUnfolderBase]: For 45343/45343 co-relation queries the response was YES. [2024-06-28 03:41:31,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5700 conditions, 1048 events. 510/1048 cut-off events. For 45343/45343 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6243 event pairs, 101 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 5581. Up to 924 conditions per place. [2024-06-28 03:41:31,652 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 22 changer transitions 0/218 dead transitions. [2024-06-28 03:41:31,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 218 transitions, 2240 flow [2024-06-28 03:41:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:41:31,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:31,654 INFO L175 Difference]: Start difference. First operand has 265 places, 197 transitions, 1740 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:41:31,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 218 transitions, 2240 flow [2024-06-28 03:41:31,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 218 transitions, 2084 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:31,816 INFO L231 Difference]: Finished difference. Result has 268 places, 198 transitions, 1656 flow [2024-06-28 03:41:31,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1656, PETRI_PLACES=268, PETRI_TRANSITIONS=198} [2024-06-28 03:41:31,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-28 03:41:31,816 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 198 transitions, 1656 flow [2024-06-28 03:41:31,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:31,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:31,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:31,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:41:31,817 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)] === [2024-06-28 03:41:31,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:31,817 INFO L85 PathProgramCache]: Analyzing trace with hash 691889455, now seen corresponding path program 12 times [2024-06-28 03:41:31,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:31,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255729286] [2024-06-28 03:41:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:31,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:32,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:32,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255729286] [2024-06-28 03:41:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255729286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:32,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:32,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:32,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291019024] [2024-06-28 03:41:32,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:32,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:32,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:32,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:32,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:32,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 198 transitions, 1656 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:32,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:32,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:32,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:33,090 INFO L124 PetriNetUnfolderBase]: 521/1069 cut-off events. [2024-06-28 03:41:33,090 INFO L125 PetriNetUnfolderBase]: For 50945/50945 co-relation queries the response was YES. [2024-06-28 03:41:33,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5909 conditions, 1069 events. 521/1069 cut-off events. For 50945/50945 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6365 event pairs, 106 based on Foata normal form. 2/1070 useless extension candidates. Maximal degree in co-relation 5789. Up to 929 conditions per place. [2024-06-28 03:41:33,099 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 26 changer transitions 0/219 dead transitions. [2024-06-28 03:41:33,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 219 transitions, 2320 flow [2024-06-28 03:41:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:41:33,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 03:41:33,101 INFO L175 Difference]: Start difference. First operand has 268 places, 198 transitions, 1656 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:41:33,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 219 transitions, 2320 flow [2024-06-28 03:41:33,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 219 transitions, 2258 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:33,282 INFO L231 Difference]: Finished difference. Result has 270 places, 200 transitions, 1700 flow [2024-06-28 03:41:33,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1700, PETRI_PLACES=270, PETRI_TRANSITIONS=200} [2024-06-28 03:41:33,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-28 03:41:33,282 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 200 transitions, 1700 flow [2024-06-28 03:41:33,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:33,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:33,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:33,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:41:33,283 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)] === [2024-06-28 03:41:33,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1726974229, now seen corresponding path program 13 times [2024-06-28 03:41:33,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:33,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350399394] [2024-06-28 03:41:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:33,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350399394] [2024-06-28 03:41:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350399394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:33,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84038787] [2024-06-28 03:41:33,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:33,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:33,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:33,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:34,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:34,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 200 transitions, 1700 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:34,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:34,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:34,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:34,278 INFO L124 PetriNetUnfolderBase]: 525/1077 cut-off events. [2024-06-28 03:41:34,278 INFO L125 PetriNetUnfolderBase]: For 52391/52391 co-relation queries the response was YES. [2024-06-28 03:41:34,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5973 conditions, 1077 events. 525/1077 cut-off events. For 52391/52391 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6441 event pairs, 113 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 5852. Up to 955 conditions per place. [2024-06-28 03:41:34,287 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 26 changer transitions 0/219 dead transitions. [2024-06-28 03:41:34,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 219 transitions, 2342 flow [2024-06-28 03:41:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:41:34,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:41:34,289 INFO L175 Difference]: Start difference. First operand has 270 places, 200 transitions, 1700 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:41:34,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 219 transitions, 2342 flow [2024-06-28 03:41:34,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 219 transitions, 2276 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:34,521 INFO L231 Difference]: Finished difference. Result has 274 places, 201 transitions, 1716 flow [2024-06-28 03:41:34,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1716, PETRI_PLACES=274, PETRI_TRANSITIONS=201} [2024-06-28 03:41:34,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-28 03:41:34,522 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 201 transitions, 1716 flow [2024-06-28 03:41:34,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:34,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:34,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:34,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:41:34,522 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)] === [2024-06-28 03:41:34,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1726796599, now seen corresponding path program 14 times [2024-06-28 03:41:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:34,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933308874] [2024-06-28 03:41:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:34,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:35,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:35,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933308874] [2024-06-28 03:41:35,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933308874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:35,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:35,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:35,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941459074] [2024-06-28 03:41:35,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:35,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:35,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:35,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:35,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:35,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:35,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 201 transitions, 1716 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:35,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:35,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:35,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:35,702 INFO L124 PetriNetUnfolderBase]: 522/1072 cut-off events. [2024-06-28 03:41:35,703 INFO L125 PetriNetUnfolderBase]: For 48016/48016 co-relation queries the response was YES. [2024-06-28 03:41:35,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 1072 events. 522/1072 cut-off events. For 48016/48016 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6397 event pairs, 117 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 5664. Up to 967 conditions per place. [2024-06-28 03:41:35,712 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 25 changer transitions 0/217 dead transitions. [2024-06-28 03:41:35,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 217 transitions, 2182 flow [2024-06-28 03:41:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:35,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 03:41:35,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 03:41:35,728 INFO L175 Difference]: Start difference. First operand has 274 places, 201 transitions, 1716 flow. Second operand 11 states and 142 transitions. [2024-06-28 03:41:35,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 217 transitions, 2182 flow [2024-06-28 03:41:35,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 217 transitions, 2098 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:35,920 INFO L231 Difference]: Finished difference. Result has 276 places, 201 transitions, 1686 flow [2024-06-28 03:41:35,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1686, PETRI_PLACES=276, PETRI_TRANSITIONS=201} [2024-06-28 03:41:35,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-28 03:41:35,921 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 201 transitions, 1686 flow [2024-06-28 03:41:35,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:35,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:35,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:35,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:41:35,921 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)] === [2024-06-28 03:41:35,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash -710035443, now seen corresponding path program 15 times [2024-06-28 03:41:35,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:35,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136822071] [2024-06-28 03:41:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:35,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136822071] [2024-06-28 03:41:36,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136822071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:36,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:36,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:36,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299736910] [2024-06-28 03:41:36,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:36,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:36,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:36,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:36,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:36,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 201 transitions, 1686 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:36,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:36,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:36,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:37,158 INFO L124 PetriNetUnfolderBase]: 526/1080 cut-off events. [2024-06-28 03:41:37,158 INFO L125 PetriNetUnfolderBase]: For 48928/48928 co-relation queries the response was YES. [2024-06-28 03:41:37,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5801 conditions, 1080 events. 526/1080 cut-off events. For 48928/48928 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6452 event pairs, 77 based on Foata normal form. 2/1081 useless extension candidates. Maximal degree in co-relation 5677. Up to 921 conditions per place. [2024-06-28 03:41:37,171 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 25 changer transitions 0/222 dead transitions. [2024-06-28 03:41:37,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 222 transitions, 2196 flow [2024-06-28 03:41:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:41:37,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:41:37,173 INFO L175 Difference]: Start difference. First operand has 276 places, 201 transitions, 1686 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:41:37,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 222 transitions, 2196 flow [2024-06-28 03:41:37,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 222 transitions, 2144 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:37,374 INFO L231 Difference]: Finished difference. Result has 277 places, 202 transitions, 1716 flow [2024-06-28 03:41:37,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1716, PETRI_PLACES=277, PETRI_TRANSITIONS=202} [2024-06-28 03:41:37,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-28 03:41:37,375 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 202 transitions, 1716 flow [2024-06-28 03:41:37,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:37,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:37,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:37,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:41:37,375 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)] === [2024-06-28 03:41:37,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1014806153, now seen corresponding path program 16 times [2024-06-28 03:41:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522294717] [2024-06-28 03:41:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:38,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:38,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522294717] [2024-06-28 03:41:38,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522294717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:38,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:38,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833954833] [2024-06-28 03:41:38,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:38,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:38,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:38,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:38,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 202 transitions, 1716 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:38,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:38,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:38,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:38,543 INFO L124 PetriNetUnfolderBase]: 530/1088 cut-off events. [2024-06-28 03:41:38,543 INFO L125 PetriNetUnfolderBase]: For 50530/50530 co-relation queries the response was YES. [2024-06-28 03:41:38,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 1088 events. 530/1088 cut-off events. For 50530/50530 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6537 event pairs, 119 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 5779. Up to 953 conditions per place. [2024-06-28 03:41:38,553 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 38 changer transitions 0/217 dead transitions. [2024-06-28 03:41:38,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 217 transitions, 2204 flow [2024-06-28 03:41:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:41:38,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:38,554 INFO L175 Difference]: Start difference. First operand has 277 places, 202 transitions, 1716 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:41:38,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 217 transitions, 2204 flow [2024-06-28 03:41:38,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 217 transitions, 2132 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:38,759 INFO L231 Difference]: Finished difference. Result has 278 places, 203 transitions, 1758 flow [2024-06-28 03:41:38,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1758, PETRI_PLACES=278, PETRI_TRANSITIONS=203} [2024-06-28 03:41:38,759 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-28 03:41:38,759 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 203 transitions, 1758 flow [2024-06-28 03:41:38,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:38,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:38,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:38,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:41:38,760 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)] === [2024-06-28 03:41:38,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:38,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1880368649, now seen corresponding path program 17 times [2024-06-28 03:41:38,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:38,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766931438] [2024-06-28 03:41:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:38,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:39,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766931438] [2024-06-28 03:41:39,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766931438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:39,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:39,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:39,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543189818] [2024-06-28 03:41:39,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:39,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:39,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:39,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:39,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 203 transitions, 1758 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:39,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:39,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:39,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:39,981 INFO L124 PetriNetUnfolderBase]: 534/1096 cut-off events. [2024-06-28 03:41:39,981 INFO L125 PetriNetUnfolderBase]: For 51683/51683 co-relation queries the response was YES. [2024-06-28 03:41:39,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 1096 events. 534/1096 cut-off events. For 51683/51683 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6589 event pairs, 112 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 5856. Up to 919 conditions per place. [2024-06-28 03:41:39,991 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 41 changer transitions 0/219 dead transitions. [2024-06-28 03:41:39,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 219 transitions, 2254 flow [2024-06-28 03:41:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:41:39,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:41:39,992 INFO L175 Difference]: Start difference. First operand has 278 places, 203 transitions, 1758 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:41:39,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 219 transitions, 2254 flow [2024-06-28 03:41:40,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 219 transitions, 2154 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:40,177 INFO L231 Difference]: Finished difference. Result has 278 places, 204 transitions, 1780 flow [2024-06-28 03:41:40,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1780, PETRI_PLACES=278, PETRI_TRANSITIONS=204} [2024-06-28 03:41:40,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-28 03:41:40,178 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 204 transitions, 1780 flow [2024-06-28 03:41:40,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:40,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:40,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:40,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:41:40,178 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)] === [2024-06-28 03:41:40,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:40,178 INFO L85 PathProgramCache]: Analyzing trace with hash -724399147, now seen corresponding path program 18 times [2024-06-28 03:41:40,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:40,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816723778] [2024-06-28 03:41:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:40,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:41,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816723778] [2024-06-28 03:41:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816723778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:41,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:41,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633893716] [2024-06-28 03:41:41,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:41,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:41,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:41,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:41,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:41,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 204 transitions, 1780 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:41,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:41,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:41,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:41,509 INFO L124 PetriNetUnfolderBase]: 538/1104 cut-off events. [2024-06-28 03:41:41,509 INFO L125 PetriNetUnfolderBase]: For 50897/50897 co-relation queries the response was YES. [2024-06-28 03:41:41,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6034 conditions, 1104 events. 538/1104 cut-off events. For 50897/50897 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6668 event pairs, 101 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 5909. Up to 861 conditions per place. [2024-06-28 03:41:41,520 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 173 selfloop transitions, 44 changer transitions 0/221 dead transitions. [2024-06-28 03:41:41,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 221 transitions, 2284 flow [2024-06-28 03:41:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 03:41:41,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 03:41:41,521 INFO L175 Difference]: Start difference. First operand has 278 places, 204 transitions, 1780 flow. Second operand 10 states and 134 transitions. [2024-06-28 03:41:41,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 221 transitions, 2284 flow [2024-06-28 03:41:41,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 221 transitions, 2176 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:41,721 INFO L231 Difference]: Finished difference. Result has 278 places, 205 transitions, 1802 flow [2024-06-28 03:41:41,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1802, PETRI_PLACES=278, PETRI_TRANSITIONS=205} [2024-06-28 03:41:41,722 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-28 03:41:41,722 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 205 transitions, 1802 flow [2024-06-28 03:41:41,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:41,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:41,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:41,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:41:41,722 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)] === [2024-06-28 03:41:41,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:41,723 INFO L85 PathProgramCache]: Analyzing trace with hash -782491597, now seen corresponding path program 19 times [2024-06-28 03:41:41,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:41,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460612871] [2024-06-28 03:41:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:41,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:42,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460612871] [2024-06-28 03:41:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460612871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:42,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:42,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:42,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470222210] [2024-06-28 03:41:42,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:42,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:42,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:42,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 205 transitions, 1802 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:42,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:42,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:42,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:42,748 INFO L124 PetriNetUnfolderBase]: 542/1112 cut-off events. [2024-06-28 03:41:42,749 INFO L125 PetriNetUnfolderBase]: For 49922/49922 co-relation queries the response was YES. [2024-06-28 03:41:42,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 1112 events. 542/1112 cut-off events. For 49922/49922 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6703 event pairs, 81 based on Foata normal form. 2/1113 useless extension candidates. Maximal degree in co-relation 5968. Up to 881 conditions per place. [2024-06-28 03:41:42,758 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 186 selfloop transitions, 33 changer transitions 0/223 dead transitions. [2024-06-28 03:41:42,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 223 transitions, 2314 flow [2024-06-28 03:41:42,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:41:42,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 03:41:42,759 INFO L175 Difference]: Start difference. First operand has 278 places, 205 transitions, 1802 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:41:42,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 223 transitions, 2314 flow [2024-06-28 03:41:42,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 223 transitions, 2196 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:42,947 INFO L231 Difference]: Finished difference. Result has 279 places, 206 transitions, 1796 flow [2024-06-28 03:41:42,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1796, PETRI_PLACES=279, PETRI_TRANSITIONS=206} [2024-06-28 03:41:42,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-28 03:41:42,950 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 206 transitions, 1796 flow [2024-06-28 03:41:42,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:42,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:42,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:42,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:41:42,950 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)] === [2024-06-28 03:41:42,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:42,951 INFO L85 PathProgramCache]: Analyzing trace with hash -824786893, now seen corresponding path program 20 times [2024-06-28 03:41:42,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:42,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2416638] [2024-06-28 03:41:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:42,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:43,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:43,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2416638] [2024-06-28 03:41:43,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2416638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:43,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:43,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:43,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958022974] [2024-06-28 03:41:43,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:43,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:43,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:43,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:43,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 206 transitions, 1796 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:43,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:43,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:43,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:44,093 INFO L124 PetriNetUnfolderBase]: 549/1127 cut-off events. [2024-06-28 03:41:44,094 INFO L125 PetriNetUnfolderBase]: For 48992/48992 co-relation queries the response was YES. [2024-06-28 03:41:44,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6131 conditions, 1127 events. 549/1127 cut-off events. For 48992/48992 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6834 event pairs, 132 based on Foata normal form. 2/1128 useless extension candidates. Maximal degree in co-relation 6007. Up to 986 conditions per place. [2024-06-28 03:41:44,104 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 180 selfloop transitions, 37 changer transitions 1/222 dead transitions. [2024-06-28 03:41:44,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 222 transitions, 2341 flow [2024-06-28 03:41:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:41:44,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:44,105 INFO L175 Difference]: Start difference. First operand has 279 places, 206 transitions, 1796 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:41:44,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 222 transitions, 2341 flow [2024-06-28 03:41:44,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 222 transitions, 2241 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:44,294 INFO L231 Difference]: Finished difference. Result has 282 places, 209 transitions, 1867 flow [2024-06-28 03:41:44,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1867, PETRI_PLACES=282, PETRI_TRANSITIONS=209} [2024-06-28 03:41:44,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-28 03:41:44,294 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 209 transitions, 1867 flow [2024-06-28 03:41:44,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:44,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:44,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:44,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:41:44,295 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)] === [2024-06-28 03:41:44,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:44,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1259534037, now seen corresponding path program 21 times [2024-06-28 03:41:44,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:44,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299319871] [2024-06-28 03:41:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:44,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:44,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:44,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299319871] [2024-06-28 03:41:44,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299319871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:44,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:44,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:44,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316577445] [2024-06-28 03:41:44,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:44,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:44,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:44,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:45,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:45,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 209 transitions, 1867 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:45,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:45,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:45,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:45,483 INFO L124 PetriNetUnfolderBase]: 554/1136 cut-off events. [2024-06-28 03:41:45,483 INFO L125 PetriNetUnfolderBase]: For 46796/46796 co-relation queries the response was YES. [2024-06-28 03:41:45,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6158 conditions, 1136 events. 554/1136 cut-off events. For 46796/46796 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6897 event pairs, 132 based on Foata normal form. 2/1137 useless extension candidates. Maximal degree in co-relation 6032. Up to 996 conditions per place. [2024-06-28 03:41:45,496 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 183 selfloop transitions, 36 changer transitions 1/224 dead transitions. [2024-06-28 03:41:45,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 224 transitions, 2384 flow [2024-06-28 03:41:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:41:45,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:45,497 INFO L175 Difference]: Start difference. First operand has 282 places, 209 transitions, 1867 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:41:45,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 224 transitions, 2384 flow [2024-06-28 03:41:45,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 224 transitions, 2271 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:45,700 INFO L231 Difference]: Finished difference. Result has 285 places, 211 transitions, 1874 flow [2024-06-28 03:41:45,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1874, PETRI_PLACES=285, PETRI_TRANSITIONS=211} [2024-06-28 03:41:45,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-28 03:41:45,701 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 211 transitions, 1874 flow [2024-06-28 03:41:45,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:45,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:45,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:45,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:41:45,702 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)] === [2024-06-28 03:41:45,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1358891059, now seen corresponding path program 22 times [2024-06-28 03:41:45,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:45,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872401395] [2024-06-28 03:41:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:45,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:46,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:46,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872401395] [2024-06-28 03:41:46,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872401395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:46,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:46,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:46,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755568969] [2024-06-28 03:41:46,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:46,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:46,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:46,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:46,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:46,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 211 transitions, 1874 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:46,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:46,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:46,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:47,180 INFO L124 PetriNetUnfolderBase]: 556/1142 cut-off events. [2024-06-28 03:41:47,181 INFO L125 PetriNetUnfolderBase]: For 46688/46688 co-relation queries the response was YES. [2024-06-28 03:41:47,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6168 conditions, 1142 events. 556/1142 cut-off events. For 46688/46688 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6944 event pairs, 134 based on Foata normal form. 2/1143 useless extension candidates. Maximal degree in co-relation 6042. Up to 1002 conditions per place. [2024-06-28 03:41:47,190 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 36 changer transitions 1/225 dead transitions. [2024-06-28 03:41:47,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 225 transitions, 2387 flow [2024-06-28 03:41:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:41:47,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:41:47,191 INFO L175 Difference]: Start difference. First operand has 285 places, 211 transitions, 1874 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:41:47,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 225 transitions, 2387 flow [2024-06-28 03:41:47,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 225 transitions, 2306 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:47,394 INFO L231 Difference]: Finished difference. Result has 288 places, 212 transitions, 1906 flow [2024-06-28 03:41:47,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1906, PETRI_PLACES=288, PETRI_TRANSITIONS=212} [2024-06-28 03:41:47,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-28 03:41:47,394 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 212 transitions, 1906 flow [2024-06-28 03:41:47,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:47,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:47,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:47,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:41:47,395 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)] === [2024-06-28 03:41:47,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1088826957, now seen corresponding path program 23 times [2024-06-28 03:41:47,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:47,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347787263] [2024-06-28 03:41:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:47,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:48,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:48,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347787263] [2024-06-28 03:41:48,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347787263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:48,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:48,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:48,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045054694] [2024-06-28 03:41:48,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:48,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:48,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:48,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:48,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:48,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 212 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:48,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:48,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:48,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:48,673 INFO L124 PetriNetUnfolderBase]: 558/1150 cut-off events. [2024-06-28 03:41:48,673 INFO L125 PetriNetUnfolderBase]: For 46844/46844 co-relation queries the response was YES. [2024-06-28 03:41:48,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6210 conditions, 1150 events. 558/1150 cut-off events. For 46844/46844 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7054 event pairs, 132 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 6084. Up to 980 conditions per place. [2024-06-28 03:41:48,684 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 38 changer transitions 0/226 dead transitions. [2024-06-28 03:41:48,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 226 transitions, 2414 flow [2024-06-28 03:41:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:41:48,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:41:48,685 INFO L175 Difference]: Start difference. First operand has 288 places, 212 transitions, 1906 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:41:48,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 226 transitions, 2414 flow [2024-06-28 03:41:48,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 226 transitions, 2328 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:41:48,900 INFO L231 Difference]: Finished difference. Result has 292 places, 213 transitions, 1938 flow [2024-06-28 03:41:48,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1938, PETRI_PLACES=292, PETRI_TRANSITIONS=213} [2024-06-28 03:41:48,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-28 03:41:48,901 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 213 transitions, 1938 flow [2024-06-28 03:41:48,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:48,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:48,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:48,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:41:48,902 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)] === [2024-06-28 03:41:48,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1088711637, now seen corresponding path program 24 times [2024-06-28 03:41:48,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:48,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92071032] [2024-06-28 03:41:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:48,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:49,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:49,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92071032] [2024-06-28 03:41:49,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92071032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:49,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:49,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693903753] [2024-06-28 03:41:49,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:49,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:49,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:49,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:49,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 213 transitions, 1938 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:49,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:49,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:49,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:50,138 INFO L124 PetriNetUnfolderBase]: 569/1171 cut-off events. [2024-06-28 03:41:50,138 INFO L125 PetriNetUnfolderBase]: For 52358/52358 co-relation queries the response was YES. [2024-06-28 03:41:50,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6529 conditions, 1171 events. 569/1171 cut-off events. For 52358/52358 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7217 event pairs, 131 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 6402. Up to 902 conditions per place. [2024-06-28 03:41:50,149 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 180 selfloop transitions, 46 changer transitions 0/230 dead transitions. [2024-06-28 03:41:50,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 230 transitions, 2632 flow [2024-06-28 03:41:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:41:50,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:41:50,150 INFO L175 Difference]: Start difference. First operand has 292 places, 213 transitions, 1938 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:41:50,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 230 transitions, 2632 flow [2024-06-28 03:41:50,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 230 transitions, 2520 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:50,344 INFO L231 Difference]: Finished difference. Result has 293 places, 215 transitions, 1996 flow [2024-06-28 03:41:50,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1996, PETRI_PLACES=293, PETRI_TRANSITIONS=215} [2024-06-28 03:41:50,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-28 03:41:50,344 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 215 transitions, 1996 flow [2024-06-28 03:41:50,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:50,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:50,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:50,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:41:50,345 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)] === [2024-06-28 03:41:50,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1052865673, now seen corresponding path program 25 times [2024-06-28 03:41:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:50,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907558483] [2024-06-28 03:41:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:50,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:50,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:50,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907558483] [2024-06-28 03:41:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907558483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:50,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:50,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:50,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450456248] [2024-06-28 03:41:50,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:50,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:50,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:50,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:51,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:51,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 215 transitions, 1996 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:51,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:51,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:51,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:51,326 INFO L124 PetriNetUnfolderBase]: 566/1166 cut-off events. [2024-06-28 03:41:51,326 INFO L125 PetriNetUnfolderBase]: For 47072/47072 co-relation queries the response was YES. [2024-06-28 03:41:51,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 1166 events. 566/1166 cut-off events. For 47072/47072 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7182 event pairs, 134 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 6204. Up to 984 conditions per place. [2024-06-28 03:41:51,337 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 40 changer transitions 0/228 dead transitions. [2024-06-28 03:41:51,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 228 transitions, 2474 flow [2024-06-28 03:41:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:51,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 03:41:51,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 03:41:51,338 INFO L175 Difference]: Start difference. First operand has 293 places, 215 transitions, 1996 flow. Second operand 10 states and 131 transitions. [2024-06-28 03:41:51,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 228 transitions, 2474 flow [2024-06-28 03:41:51,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 228 transitions, 2371 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:51,545 INFO L231 Difference]: Finished difference. Result has 295 places, 215 transitions, 1979 flow [2024-06-28 03:41:51,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1979, PETRI_PLACES=295, PETRI_TRANSITIONS=215} [2024-06-28 03:41:51,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-28 03:41:51,545 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 215 transitions, 1979 flow [2024-06-28 03:41:51,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:51,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:51,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:51,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:41:51,546 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)] === [2024-06-28 03:41:51,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:51,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1880184075, now seen corresponding path program 3 times [2024-06-28 03:41:51,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:51,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778669617] [2024-06-28 03:41:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:51,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:52,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:52,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778669617] [2024-06-28 03:41:52,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778669617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:52,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:52,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:52,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296735226] [2024-06-28 03:41:52,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:52,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:52,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:52,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:52,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:52,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:52,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 215 transitions, 1979 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:52,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:52,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:52,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:52,865 INFO L124 PetriNetUnfolderBase]: 569/1173 cut-off events. [2024-06-28 03:41:52,865 INFO L125 PetriNetUnfolderBase]: For 44541/44541 co-relation queries the response was YES. [2024-06-28 03:41:52,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6375 conditions, 1173 events. 569/1173 cut-off events. For 44541/44541 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7214 event pairs, 127 based on Foata normal form. 1/1173 useless extension candidates. Maximal degree in co-relation 6248. Up to 1034 conditions per place. [2024-06-28 03:41:52,875 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 47 changer transitions 0/231 dead transitions. [2024-06-28 03:41:52,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 231 transitions, 2543 flow [2024-06-28 03:41:52,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:41:52,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:41:52,876 INFO L175 Difference]: Start difference. First operand has 295 places, 215 transitions, 1979 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:41:52,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 231 transitions, 2543 flow [2024-06-28 03:41:53,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 231 transitions, 2431 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:53,039 INFO L231 Difference]: Finished difference. Result has 296 places, 217 transitions, 2052 flow [2024-06-28 03:41:53,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2052, PETRI_PLACES=296, PETRI_TRANSITIONS=217} [2024-06-28 03:41:53,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-28 03:41:53,040 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 217 transitions, 2052 flow [2024-06-28 03:41:53,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:53,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:53,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:53,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:41:53,040 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)] === [2024-06-28 03:41:53,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash -816209069, now seen corresponding path program 4 times [2024-06-28 03:41:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:53,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472988390] [2024-06-28 03:41:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:53,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:53,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472988390] [2024-06-28 03:41:53,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472988390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:53,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:53,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:53,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611023964] [2024-06-28 03:41:53,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:53,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:53,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:53,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:53,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:53,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:53,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 217 transitions, 2052 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:53,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:53,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:53,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:54,318 INFO L124 PetriNetUnfolderBase]: 572/1180 cut-off events. [2024-06-28 03:41:54,318 INFO L125 PetriNetUnfolderBase]: For 45547/45547 co-relation queries the response was YES. [2024-06-28 03:41:54,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6474 conditions, 1180 events. 572/1180 cut-off events. For 45547/45547 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7267 event pairs, 138 based on Foata normal form. 1/1180 useless extension candidates. Maximal degree in co-relation 6347. Up to 1022 conditions per place. [2024-06-28 03:41:54,328 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 44 changer transitions 3/234 dead transitions. [2024-06-28 03:41:54,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 234 transitions, 2665 flow [2024-06-28 03:41:54,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:41:54,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 03:41:54,329 INFO L175 Difference]: Start difference. First operand has 296 places, 217 transitions, 2052 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:41:54,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 234 transitions, 2665 flow [2024-06-28 03:41:54,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 234 transitions, 2506 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:54,505 INFO L231 Difference]: Finished difference. Result has 300 places, 219 transitions, 2079 flow [2024-06-28 03:41:54,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2079, PETRI_PLACES=300, PETRI_TRANSITIONS=219} [2024-06-28 03:41:54,506 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-28 03:41:54,506 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 219 transitions, 2079 flow [2024-06-28 03:41:54,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:54,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:54,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:54,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:41:54,506 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)] === [2024-06-28 03:41:54,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1003401371, now seen corresponding path program 26 times [2024-06-28 03:41:54,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:54,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225016415] [2024-06-28 03:41:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:54,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:55,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:55,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225016415] [2024-06-28 03:41:55,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225016415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:55,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:55,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829589070] [2024-06-28 03:41:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:55,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:55,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:55,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 219 transitions, 2079 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:55,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:55,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:55,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:55,649 INFO L124 PetriNetUnfolderBase]: 567/1163 cut-off events. [2024-06-28 03:41:55,649 INFO L125 PetriNetUnfolderBase]: For 46522/46522 co-relation queries the response was YES. [2024-06-28 03:41:55,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 1163 events. 567/1163 cut-off events. For 46522/46522 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7172 event pairs, 133 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 6192. Up to 970 conditions per place. [2024-06-28 03:41:55,660 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 182 selfloop transitions, 47 changer transitions 2/235 dead transitions. [2024-06-28 03:41:55,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 235 transitions, 2722 flow [2024-06-28 03:41:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:41:55,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:41:55,661 INFO L175 Difference]: Start difference. First operand has 300 places, 219 transitions, 2079 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:41:55,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 235 transitions, 2722 flow [2024-06-28 03:41:55,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 235 transitions, 2558 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:55,832 INFO L231 Difference]: Finished difference. Result has 301 places, 222 transitions, 2098 flow [2024-06-28 03:41:55,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2098, PETRI_PLACES=301, PETRI_TRANSITIONS=222} [2024-06-28 03:41:55,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-28 03:41:55,832 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 222 transitions, 2098 flow [2024-06-28 03:41:55,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:55,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:55,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:55,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:41:55,833 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)] === [2024-06-28 03:41:55,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:55,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1009830461, now seen corresponding path program 27 times [2024-06-28 03:41:55,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:55,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305889692] [2024-06-28 03:41:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:55,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:56,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:56,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305889692] [2024-06-28 03:41:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305889692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:56,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:56,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:56,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257590154] [2024-06-28 03:41:56,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:56,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:56,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:56,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:56,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:56,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:56,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 222 transitions, 2098 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:56,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:56,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:56,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:57,076 INFO L124 PetriNetUnfolderBase]: 569/1171 cut-off events. [2024-06-28 03:41:57,076 INFO L125 PetriNetUnfolderBase]: For 46091/46091 co-relation queries the response was YES. [2024-06-28 03:41:57,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6326 conditions, 1171 events. 569/1171 cut-off events. For 46091/46091 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7221 event pairs, 133 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 6195. Up to 976 conditions per place. [2024-06-28 03:41:57,087 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 182 selfloop transitions, 48 changer transitions 3/237 dead transitions. [2024-06-28 03:41:57,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 237 transitions, 2719 flow [2024-06-28 03:41:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:41:57,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:41:57,089 INFO L175 Difference]: Start difference. First operand has 301 places, 222 transitions, 2098 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:41:57,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 237 transitions, 2719 flow [2024-06-28 03:41:57,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 237 transitions, 2559 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:57,262 INFO L231 Difference]: Finished difference. Result has 305 places, 224 transitions, 2127 flow [2024-06-28 03:41:57,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2127, PETRI_PLACES=305, PETRI_TRANSITIONS=224} [2024-06-28 03:41:57,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-28 03:41:57,262 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 224 transitions, 2127 flow [2024-06-28 03:41:57,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:57,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:57,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:57,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:41:57,263 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)] === [2024-06-28 03:41:57,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:57,263 INFO L85 PathProgramCache]: Analyzing trace with hash -966208527, now seen corresponding path program 28 times [2024-06-28 03:41:57,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:57,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904476739] [2024-06-28 03:41:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:57,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904476739] [2024-06-28 03:41:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904476739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:58,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272752196] [2024-06-28 03:41:58,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:58,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:58,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:58,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 224 transitions, 2127 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:58,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:58,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:58,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:58,530 INFO L124 PetriNetUnfolderBase]: 575/1187 cut-off events. [2024-06-28 03:41:58,530 INFO L125 PetriNetUnfolderBase]: For 47057/47057 co-relation queries the response was YES. [2024-06-28 03:41:58,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 1187 events. 575/1187 cut-off events. For 47057/47057 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7360 event pairs, 135 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 6258. Up to 988 conditions per place. [2024-06-28 03:41:58,541 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 188 selfloop transitions, 45 changer transitions 3/240 dead transitions. [2024-06-28 03:41:58,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 240 transitions, 2733 flow [2024-06-28 03:41:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 03:41:58,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:41:58,542 INFO L175 Difference]: Start difference. First operand has 305 places, 224 transitions, 2127 flow. Second operand 10 states and 135 transitions. [2024-06-28 03:41:58,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 240 transitions, 2733 flow [2024-06-28 03:41:58,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 240 transitions, 2577 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 03:41:58,764 INFO L231 Difference]: Finished difference. Result has 310 places, 227 transitions, 2125 flow [2024-06-28 03:41:58,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2125, PETRI_PLACES=310, PETRI_TRANSITIONS=227} [2024-06-28 03:41:58,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-28 03:41:58,765 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 227 transitions, 2125 flow [2024-06-28 03:41:58,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:58,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:58,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:58,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:41:58,765 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)] === [2024-06-28 03:41:58,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1669708937, now seen corresponding path program 29 times [2024-06-28 03:41:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:58,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447716246] [2024-06-28 03:41:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:59,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:59,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447716246] [2024-06-28 03:41:59,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447716246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:59,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:59,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:59,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932586569] [2024-06-28 03:41:59,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:59,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:59,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:59,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:59,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:41:59,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 227 transitions, 2125 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:41:59,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:59,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:41:59,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:59,903 INFO L124 PetriNetUnfolderBase]: 556/1142 cut-off events. [2024-06-28 03:41:59,904 INFO L125 PetriNetUnfolderBase]: For 50112/50112 co-relation queries the response was YES. [2024-06-28 03:41:59,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6201 conditions, 1142 events. 556/1142 cut-off events. For 50112/50112 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7064 event pairs, 126 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 6067. Up to 924 conditions per place. [2024-06-28 03:41:59,913 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 190 selfloop transitions, 47 changer transitions 0/241 dead transitions. [2024-06-28 03:41:59,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 241 transitions, 2845 flow [2024-06-28 03:41:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 03:41:59,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:41:59,914 INFO L175 Difference]: Start difference. First operand has 310 places, 227 transitions, 2125 flow. Second operand 10 states and 136 transitions. [2024-06-28 03:41:59,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 241 transitions, 2845 flow [2024-06-28 03:42:00,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 241 transitions, 2649 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:00,093 INFO L231 Difference]: Finished difference. Result has 310 places, 229 transitions, 2105 flow [2024-06-28 03:42:00,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2105, PETRI_PLACES=310, PETRI_TRANSITIONS=229} [2024-06-28 03:42:00,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-28 03:42:00,094 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 229 transitions, 2105 flow [2024-06-28 03:42:00,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:00,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:00,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:00,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:42:00,095 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)] === [2024-06-28 03:42:00,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:00,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1678688205, now seen corresponding path program 30 times [2024-06-28 03:42:00,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:00,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231474243] [2024-06-28 03:42:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:00,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231474243] [2024-06-28 03:42:00,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231474243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:00,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:00,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:00,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792489812] [2024-06-28 03:42:00,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:00,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:00,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:00,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:00,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:00,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 229 transitions, 2105 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:00,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:00,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:00,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:01,312 INFO L124 PetriNetUnfolderBase]: 560/1150 cut-off events. [2024-06-28 03:42:01,313 INFO L125 PetriNetUnfolderBase]: For 51020/51020 co-relation queries the response was YES. [2024-06-28 03:42:01,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6156 conditions, 1150 events. 560/1150 cut-off events. For 51020/51020 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7102 event pairs, 130 based on Foata normal form. 2/1149 useless extension candidates. Maximal degree in co-relation 6026. Up to 955 conditions per place. [2024-06-28 03:42:01,322 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 178 selfloop transitions, 58 changer transitions 0/240 dead transitions. [2024-06-28 03:42:01,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 240 transitions, 2639 flow [2024-06-28 03:42:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 03:42:01,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:42:01,323 INFO L175 Difference]: Start difference. First operand has 310 places, 229 transitions, 2105 flow. Second operand 10 states and 130 transitions. [2024-06-28 03:42:01,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 240 transitions, 2639 flow [2024-06-28 03:42:01,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 240 transitions, 2541 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:01,531 INFO L231 Difference]: Finished difference. Result has 314 places, 230 transitions, 2169 flow [2024-06-28 03:42:01,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2169, PETRI_PLACES=314, PETRI_TRANSITIONS=230} [2024-06-28 03:42:01,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-28 03:42:01,531 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 230 transitions, 2169 flow [2024-06-28 03:42:01,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:01,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:01,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:01,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:42:01,532 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)] === [2024-06-28 03:42:01,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:01,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1875219977, now seen corresponding path program 31 times [2024-06-28 03:42:01,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:01,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212379170] [2024-06-28 03:42:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:01,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:02,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:02,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212379170] [2024-06-28 03:42:02,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212379170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:02,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:02,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:02,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846695155] [2024-06-28 03:42:02,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:02,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:02,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:02,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:02,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:02,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 230 transitions, 2169 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:02,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:02,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:02,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:02,678 INFO L124 PetriNetUnfolderBase]: 564/1158 cut-off events. [2024-06-28 03:42:02,678 INFO L125 PetriNetUnfolderBase]: For 52204/52204 co-relation queries the response was YES. [2024-06-28 03:42:02,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6281 conditions, 1158 events. 564/1158 cut-off events. For 52204/52204 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7170 event pairs, 128 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 6149. Up to 937 conditions per place. [2024-06-28 03:42:02,689 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 53 changer transitions 0/242 dead transitions. [2024-06-28 03:42:02,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 242 transitions, 2711 flow [2024-06-28 03:42:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:42:02,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:42:02,690 INFO L175 Difference]: Start difference. First operand has 314 places, 230 transitions, 2169 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:42:02,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 242 transitions, 2711 flow [2024-06-28 03:42:02,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 242 transitions, 2542 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:02,861 INFO L231 Difference]: Finished difference. Result has 314 places, 231 transitions, 2154 flow [2024-06-28 03:42:02,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2154, PETRI_PLACES=314, PETRI_TRANSITIONS=231} [2024-06-28 03:42:02,862 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-28 03:42:02,862 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 231 transitions, 2154 flow [2024-06-28 03:42:02,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:02,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:02,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:02,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:42:02,863 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)] === [2024-06-28 03:42:02,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash -738134397, now seen corresponding path program 32 times [2024-06-28 03:42:02,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:02,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483180289] [2024-06-28 03:42:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:03,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483180289] [2024-06-28 03:42:03,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483180289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:03,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:03,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:03,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781180970] [2024-06-28 03:42:03,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:03,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:03,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:03,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:03,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:03,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:03,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 231 transitions, 2154 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:03,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:03,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:03,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:03,954 INFO L124 PetriNetUnfolderBase]: 561/1153 cut-off events. [2024-06-28 03:42:03,955 INFO L125 PetriNetUnfolderBase]: For 47283/47283 co-relation queries the response was YES. [2024-06-28 03:42:03,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6021 conditions, 1153 events. 561/1153 cut-off events. For 47283/47283 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7165 event pairs, 129 based on Foata normal form. 2/1152 useless extension candidates. Maximal degree in co-relation 5890. Up to 958 conditions per place. [2024-06-28 03:42:03,965 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 191 selfloop transitions, 46 changer transitions 0/241 dead transitions. [2024-06-28 03:42:03,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 241 transitions, 2650 flow [2024-06-28 03:42:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:42:03,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:42:03,966 INFO L175 Difference]: Start difference. First operand has 314 places, 231 transitions, 2154 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:42:03,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 241 transitions, 2650 flow [2024-06-28 03:42:04,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 241 transitions, 2480 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:04,150 INFO L231 Difference]: Finished difference. Result has 316 places, 231 transitions, 2080 flow [2024-06-28 03:42:04,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2080, PETRI_PLACES=316, PETRI_TRANSITIONS=231} [2024-06-28 03:42:04,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-28 03:42:04,150 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 231 transitions, 2080 flow [2024-06-28 03:42:04,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:04,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:04,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:04,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:42:04,151 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)] === [2024-06-28 03:42:04,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:04,151 INFO L85 PathProgramCache]: Analyzing trace with hash 741874815, now seen corresponding path program 33 times [2024-06-28 03:42:04,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:04,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598788473] [2024-06-28 03:42:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:05,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598788473] [2024-06-28 03:42:05,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598788473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:05,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:05,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:05,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081288842] [2024-06-28 03:42:05,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:05,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:05,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:05,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:05,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:05,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 231 transitions, 2080 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:05,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:05,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:05,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:05,575 INFO L124 PetriNetUnfolderBase]: 565/1161 cut-off events. [2024-06-28 03:42:05,575 INFO L125 PetriNetUnfolderBase]: For 47921/47921 co-relation queries the response was YES. [2024-06-28 03:42:05,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5989 conditions, 1161 events. 565/1161 cut-off events. For 47921/47921 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7202 event pairs, 131 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 5857. Up to 966 conditions per place. [2024-06-28 03:42:05,586 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 190 selfloop transitions, 48 changer transitions 1/243 dead transitions. [2024-06-28 03:42:05,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 243 transitions, 2635 flow [2024-06-28 03:42:05,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 03:42:05,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 03:42:05,587 INFO L175 Difference]: Start difference. First operand has 316 places, 231 transitions, 2080 flow. Second operand 10 states and 132 transitions. [2024-06-28 03:42:05,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 243 transitions, 2635 flow [2024-06-28 03:42:05,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 243 transitions, 2524 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:05,759 INFO L231 Difference]: Finished difference. Result has 316 places, 232 transitions, 2117 flow [2024-06-28 03:42:05,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2117, PETRI_PLACES=316, PETRI_TRANSITIONS=232} [2024-06-28 03:42:05,759 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-28 03:42:05,759 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 232 transitions, 2117 flow [2024-06-28 03:42:05,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:05,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:05,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:05,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:42:05,760 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)] === [2024-06-28 03:42:05,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1445365925, now seen corresponding path program 34 times [2024-06-28 03:42:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921818576] [2024-06-28 03:42:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:05,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:06,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:06,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921818576] [2024-06-28 03:42:06,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921818576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:06,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:06,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:06,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023455664] [2024-06-28 03:42:06,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:06,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:06,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:06,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:06,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 232 transitions, 2117 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:06,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:06,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:06,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:06,988 INFO L124 PetriNetUnfolderBase]: 557/1141 cut-off events. [2024-06-28 03:42:06,988 INFO L125 PetriNetUnfolderBase]: For 48762/48762 co-relation queries the response was YES. [2024-06-28 03:42:06,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5924 conditions, 1141 events. 557/1141 cut-off events. For 48762/48762 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7087 event pairs, 127 based on Foata normal form. 2/1140 useless extension candidates. Maximal degree in co-relation 5792. Up to 932 conditions per place. [2024-06-28 03:42:06,999 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 191 selfloop transitions, 49 changer transitions 0/244 dead transitions. [2024-06-28 03:42:06,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 244 transitions, 2667 flow [2024-06-28 03:42:07,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:07,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:07,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 03:42:07,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 03:42:07,001 INFO L175 Difference]: Start difference. First operand has 316 places, 232 transitions, 2117 flow. Second operand 10 states and 133 transitions. [2024-06-28 03:42:07,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 244 transitions, 2667 flow [2024-06-28 03:42:07,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 244 transitions, 2537 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:07,165 INFO L231 Difference]: Finished difference. Result has 320 places, 233 transitions, 2137 flow [2024-06-28 03:42:07,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2137, PETRI_PLACES=320, PETRI_TRANSITIONS=233} [2024-06-28 03:42:07,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-28 03:42:07,165 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 233 transitions, 2137 flow [2024-06-28 03:42:07,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:07,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:07,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:07,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:42:07,166 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)] === [2024-06-28 03:42:07,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:07,166 INFO L85 PathProgramCache]: Analyzing trace with hash 737286195, now seen corresponding path program 35 times [2024-06-28 03:42:07,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:07,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444283241] [2024-06-28 03:42:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:07,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:07,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:07,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444283241] [2024-06-28 03:42:07,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444283241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:07,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:07,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:07,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921351936] [2024-06-28 03:42:07,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:07,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:07,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:08,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:08,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 233 transitions, 2137 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:08,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:08,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:08,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:08,366 INFO L124 PetriNetUnfolderBase]: 554/1136 cut-off events. [2024-06-28 03:42:08,366 INFO L125 PetriNetUnfolderBase]: For 43076/43076 co-relation queries the response was YES. [2024-06-28 03:42:08,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5652 conditions, 1136 events. 554/1136 cut-off events. For 43076/43076 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7059 event pairs, 124 based on Foata normal form. 2/1135 useless extension candidates. Maximal degree in co-relation 5519. Up to 847 conditions per place. [2024-06-28 03:42:08,377 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 57 changer transitions 0/245 dead transitions. [2024-06-28 03:42:08,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 245 transitions, 2645 flow [2024-06-28 03:42:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 03:42:08,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 03:42:08,379 INFO L175 Difference]: Start difference. First operand has 320 places, 233 transitions, 2137 flow. Second operand 10 states and 134 transitions. [2024-06-28 03:42:08,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 245 transitions, 2645 flow [2024-06-28 03:42:08,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 245 transitions, 2505 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:08,560 INFO L231 Difference]: Finished difference. Result has 322 places, 233 transitions, 2115 flow [2024-06-28 03:42:08,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2115, PETRI_PLACES=322, PETRI_TRANSITIONS=233} [2024-06-28 03:42:08,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-28 03:42:08,561 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 233 transitions, 2115 flow [2024-06-28 03:42:08,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 03:42:08,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:08,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:08,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:42:08,561 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)] === [2024-06-28 03:42:08,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1356186029, now seen corresponding path program 5 times [2024-06-28 03:42:08,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:08,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652410406] [2024-06-28 03:42:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:08,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652410406] [2024-06-28 03:42:09,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652410406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:09,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:09,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:09,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926863136] [2024-06-28 03:42:09,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:09,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:09,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:09,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 233 transitions, 2115 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:09,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:09,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:09,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:10,106 INFO L124 PetriNetUnfolderBase]: 557/1144 cut-off events. [2024-06-28 03:42:10,106 INFO L125 PetriNetUnfolderBase]: For 40851/40851 co-relation queries the response was YES. [2024-06-28 03:42:10,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5703 conditions, 1144 events. 557/1144 cut-off events. For 40851/40851 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7127 event pairs, 198 based on Foata normal form. 1/1144 useless extension candidates. Maximal degree in co-relation 5569. Up to 1053 conditions per place. [2024-06-28 03:42:10,116 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 18 changer transitions 0/245 dead transitions. [2024-06-28 03:42:10,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 245 transitions, 2695 flow [2024-06-28 03:42:10,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:42:10,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 03:42:10,117 INFO L175 Difference]: Start difference. First operand has 322 places, 233 transitions, 2115 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:42:10,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 245 transitions, 2695 flow [2024-06-28 03:42:10,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 245 transitions, 2407 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:10,300 INFO L231 Difference]: Finished difference. Result has 322 places, 235 transitions, 1948 flow [2024-06-28 03:42:10,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1948, PETRI_PLACES=322, PETRI_TRANSITIONS=235} [2024-06-28 03:42:10,301 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-28 03:42:10,301 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 235 transitions, 1948 flow [2024-06-28 03:42:10,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:10,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:10,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:10,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:42:10,301 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)] === [2024-06-28 03:42:10,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1633242329, now seen corresponding path program 6 times [2024-06-28 03:42:10,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:10,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861161497] [2024-06-28 03:42:10,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:10,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:11,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:11,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861161497] [2024-06-28 03:42:11,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861161497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:11,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:11,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925477327] [2024-06-28 03:42:11,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:11,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:11,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:11,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 235 transitions, 1948 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:11,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:11,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:11,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:11,462 INFO L124 PetriNetUnfolderBase]: 560/1148 cut-off events. [2024-06-28 03:42:11,472 INFO L125 PetriNetUnfolderBase]: For 41404/41404 co-relation queries the response was YES. [2024-06-28 03:42:11,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 1148 events. 560/1148 cut-off events. For 41404/41404 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7174 event pairs, 106 based on Foata normal form. 1/1143 useless extension candidates. Maximal degree in co-relation 5254. Up to 878 conditions per place. [2024-06-28 03:42:11,486 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 88 changer transitions 0/247 dead transitions. [2024-06-28 03:42:11,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 247 transitions, 2536 flow [2024-06-28 03:42:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:42:11,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:42:11,487 INFO L175 Difference]: Start difference. First operand has 322 places, 235 transitions, 1948 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:42:11,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 247 transitions, 2536 flow [2024-06-28 03:42:11,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 247 transitions, 2395 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:11,654 INFO L231 Difference]: Finished difference. Result has 323 places, 237 transitions, 2072 flow [2024-06-28 03:42:11,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2072, PETRI_PLACES=323, PETRI_TRANSITIONS=237} [2024-06-28 03:42:11,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-28 03:42:11,654 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 237 transitions, 2072 flow [2024-06-28 03:42:11,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:11,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:11,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:11,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:42:11,655 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)] === [2024-06-28 03:42:11,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:11,655 INFO L85 PathProgramCache]: Analyzing trace with hash -193070253, now seen corresponding path program 7 times [2024-06-28 03:42:11,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:11,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698658862] [2024-06-28 03:42:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:11,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:12,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:12,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698658862] [2024-06-28 03:42:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698658862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:12,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155002443] [2024-06-28 03:42:12,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:12,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:12,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:12,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:12,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:12,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:12,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 237 transitions, 2072 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:12,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:12,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:12,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:13,028 INFO L124 PetriNetUnfolderBase]: 563/1158 cut-off events. [2024-06-28 03:42:13,028 INFO L125 PetriNetUnfolderBase]: For 42571/42571 co-relation queries the response was YES. [2024-06-28 03:42:13,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5510 conditions, 1158 events. 563/1158 cut-off events. For 42571/42571 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7244 event pairs, 198 based on Foata normal form. 1/1158 useless extension candidates. Maximal degree in co-relation 5377. Up to 1054 conditions per place. [2024-06-28 03:42:13,039 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 24 changer transitions 0/250 dead transitions. [2024-06-28 03:42:13,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 250 transitions, 2670 flow [2024-06-28 03:42:13,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:42:13,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-28 03:42:13,040 INFO L175 Difference]: Start difference. First operand has 323 places, 237 transitions, 2072 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:42:13,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 250 transitions, 2670 flow [2024-06-28 03:42:13,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 250 transitions, 2423 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:13,196 INFO L231 Difference]: Finished difference. Result has 326 places, 239 transitions, 1967 flow [2024-06-28 03:42:13,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1967, PETRI_PLACES=326, PETRI_TRANSITIONS=239} [2024-06-28 03:42:13,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-28 03:42:13,197 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 239 transitions, 1967 flow [2024-06-28 03:42:13,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:13,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:13,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:13,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:42:13,198 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)] === [2024-06-28 03:42:13,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash -773178507, now seen corresponding path program 8 times [2024-06-28 03:42:13,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:13,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711876114] [2024-06-28 03:42:13,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:13,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:13,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:13,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711876114] [2024-06-28 03:42:13,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711876114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:13,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:13,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522972347] [2024-06-28 03:42:13,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:13,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:13,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:13,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:14,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:14,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 239 transitions, 1967 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:14,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:14,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:14,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:14,384 INFO L124 PetriNetUnfolderBase]: 566/1162 cut-off events. [2024-06-28 03:42:14,384 INFO L125 PetriNetUnfolderBase]: For 43560/43560 co-relation queries the response was YES. [2024-06-28 03:42:14,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5437 conditions, 1162 events. 566/1162 cut-off events. For 43560/43560 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7291 event pairs, 106 based on Foata normal form. 1/1157 useless extension candidates. Maximal degree in co-relation 5303. Up to 888 conditions per place. [2024-06-28 03:42:14,396 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 76 changer transitions 0/251 dead transitions. [2024-06-28 03:42:14,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 251 transitions, 2569 flow [2024-06-28 03:42:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:42:14,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 03:42:14,397 INFO L175 Difference]: Start difference. First operand has 326 places, 239 transitions, 1967 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:42:14,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 251 transitions, 2569 flow [2024-06-28 03:42:14,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 251 transitions, 2443 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:14,571 INFO L231 Difference]: Finished difference. Result has 327 places, 241 transitions, 2088 flow [2024-06-28 03:42:14,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2088, PETRI_PLACES=327, PETRI_TRANSITIONS=241} [2024-06-28 03:42:14,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-28 03:42:14,572 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 241 transitions, 2088 flow [2024-06-28 03:42:14,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:14,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:14,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:14,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:42:14,572 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)] === [2024-06-28 03:42:14,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1433052333, now seen corresponding path program 9 times [2024-06-28 03:42:14,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:14,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44451095] [2024-06-28 03:42:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:15,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:15,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44451095] [2024-06-28 03:42:15,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44451095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:15,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:15,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:15,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559716583] [2024-06-28 03:42:15,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:15,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:15,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:15,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 241 transitions, 2088 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:15,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:15,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:15,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:15,689 INFO L124 PetriNetUnfolderBase]: 564/1159 cut-off events. [2024-06-28 03:42:15,690 INFO L125 PetriNetUnfolderBase]: For 39561/39561 co-relation queries the response was YES. [2024-06-28 03:42:15,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 1159 events. 564/1159 cut-off events. For 39561/39561 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7266 event pairs, 106 based on Foata normal form. 1/1154 useless extension candidates. Maximal degree in co-relation 5210. Up to 885 conditions per place. [2024-06-28 03:42:15,700 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 70 changer transitions 0/253 dead transitions. [2024-06-28 03:42:15,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 253 transitions, 2694 flow [2024-06-28 03:42:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:42:15,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 03:42:15,701 INFO L175 Difference]: Start difference. First operand has 327 places, 241 transitions, 2088 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:42:15,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 253 transitions, 2694 flow [2024-06-28 03:42:15,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 253 transitions, 2467 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:15,834 INFO L231 Difference]: Finished difference. Result has 329 places, 243 transitions, 2096 flow [2024-06-28 03:42:15,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2096, PETRI_PLACES=329, PETRI_TRANSITIONS=243} [2024-06-28 03:42:15,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-28 03:42:15,835 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 243 transitions, 2096 flow [2024-06-28 03:42:15,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:15,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:15,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:15,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:42:15,835 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)] === [2024-06-28 03:42:15,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:15,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1629034246, now seen corresponding path program 1 times [2024-06-28 03:42:15,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:15,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407844728] [2024-06-28 03:42:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:15,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:16,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:16,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407844728] [2024-06-28 03:42:16,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407844728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:16,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:16,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645592411] [2024-06-28 03:42:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:16,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:16,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:16,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:16,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:16,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:16,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 243 transitions, 2096 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:16,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:16,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:16,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:17,012 INFO L124 PetriNetUnfolderBase]: 575/1184 cut-off events. [2024-06-28 03:42:17,012 INFO L125 PetriNetUnfolderBase]: For 50249/50249 co-relation queries the response was YES. [2024-06-28 03:42:17,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5546 conditions, 1184 events. 575/1184 cut-off events. For 50249/50249 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7458 event pairs, 93 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 5410. Up to 1001 conditions per place. [2024-06-28 03:42:17,023 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 27 changer transitions 0/265 dead transitions. [2024-06-28 03:42:17,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 265 transitions, 2856 flow [2024-06-28 03:42:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:17,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 03:42:17,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:42:17,024 INFO L175 Difference]: Start difference. First operand has 329 places, 243 transitions, 2096 flow. Second operand 12 states and 160 transitions. [2024-06-28 03:42:17,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 265 transitions, 2856 flow [2024-06-28 03:42:17,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 265 transitions, 2637 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:17,182 INFO L231 Difference]: Finished difference. Result has 332 places, 245 transitions, 1961 flow [2024-06-28 03:42:17,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1961, PETRI_PLACES=332, PETRI_TRANSITIONS=245} [2024-06-28 03:42:17,182 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-28 03:42:17,182 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 245 transitions, 1961 flow [2024-06-28 03:42:17,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:17,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:17,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:17,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:42:17,183 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)] === [2024-06-28 03:42:17,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:17,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1819307000, now seen corresponding path program 2 times [2024-06-28 03:42:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:17,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143498677] [2024-06-28 03:42:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:17,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:18,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143498677] [2024-06-28 03:42:18,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143498677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:18,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:18,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:18,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093831375] [2024-06-28 03:42:18,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:18,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:18,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:18,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:18,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:18,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:18,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 245 transitions, 1961 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:18,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:18,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:18,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:18,489 INFO L124 PetriNetUnfolderBase]: 586/1205 cut-off events. [2024-06-28 03:42:18,490 INFO L125 PetriNetUnfolderBase]: For 56934/56934 co-relation queries the response was YES. [2024-06-28 03:42:18,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5685 conditions, 1205 events. 586/1205 cut-off events. For 56934/56934 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7598 event pairs, 102 based on Foata normal form. 2/1206 useless extension candidates. Maximal degree in co-relation 5548. Up to 1066 conditions per place. [2024-06-28 03:42:18,500 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 27 changer transitions 0/265 dead transitions. [2024-06-28 03:42:18,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 265 transitions, 2723 flow [2024-06-28 03:42:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:42:18,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:42:18,501 INFO L175 Difference]: Start difference. First operand has 332 places, 245 transitions, 1961 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:42:18,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 265 transitions, 2723 flow [2024-06-28 03:42:18,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 265 transitions, 2674 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:18,669 INFO L231 Difference]: Finished difference. Result has 336 places, 247 transitions, 2000 flow [2024-06-28 03:42:18,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2000, PETRI_PLACES=336, PETRI_TRANSITIONS=247} [2024-06-28 03:42:18,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-28 03:42:18,670 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 247 transitions, 2000 flow [2024-06-28 03:42:18,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:18,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:18,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:18,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:42:18,672 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)] === [2024-06-28 03:42:18,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:18,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1813737230, now seen corresponding path program 3 times [2024-06-28 03:42:18,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:18,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429048496] [2024-06-28 03:42:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:18,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:19,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:19,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429048496] [2024-06-28 03:42:19,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429048496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:19,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:19,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:19,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515769425] [2024-06-28 03:42:19,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:19,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:19,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:19,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:19,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:19,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 247 transitions, 2000 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:19,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:19,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:19,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:19,882 INFO L124 PetriNetUnfolderBase]: 583/1200 cut-off events. [2024-06-28 03:42:19,883 INFO L125 PetriNetUnfolderBase]: For 51694/51694 co-relation queries the response was YES. [2024-06-28 03:42:19,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5524 conditions, 1200 events. 583/1200 cut-off events. For 51694/51694 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7572 event pairs, 103 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 5385. Up to 1078 conditions per place. [2024-06-28 03:42:19,895 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 26 changer transitions 0/263 dead transitions. [2024-06-28 03:42:19,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 263 transitions, 2558 flow [2024-06-28 03:42:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:42:19,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 03:42:19,896 INFO L175 Difference]: Start difference. First operand has 336 places, 247 transitions, 2000 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:42:19,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 263 transitions, 2558 flow [2024-06-28 03:42:20,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 263 transitions, 2509 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:20,080 INFO L231 Difference]: Finished difference. Result has 340 places, 247 transitions, 2007 flow [2024-06-28 03:42:20,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2007, PETRI_PLACES=340, PETRI_TRANSITIONS=247} [2024-06-28 03:42:20,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-28 03:42:20,081 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 247 transitions, 2007 flow [2024-06-28 03:42:20,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:20,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:20,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:20,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:42:20,081 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)] === [2024-06-28 03:42:20,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1819451150, now seen corresponding path program 4 times [2024-06-28 03:42:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:20,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328788546] [2024-06-28 03:42:20,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:20,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:21,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:21,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328788546] [2024-06-28 03:42:21,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328788546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:21,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:21,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:21,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120015817] [2024-06-28 03:42:21,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:21,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:21,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:21,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:21,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:21,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:21,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 247 transitions, 2007 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:21,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:21,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:21,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:21,527 INFO L124 PetriNetUnfolderBase]: 580/1195 cut-off events. [2024-06-28 03:42:21,528 INFO L125 PetriNetUnfolderBase]: For 45374/45374 co-relation queries the response was YES. [2024-06-28 03:42:21,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5353 conditions, 1195 events. 580/1195 cut-off events. For 45374/45374 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7538 event pairs, 98 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 5212. Up to 1037 conditions per place. [2024-06-28 03:42:21,540 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 28 changer transitions 0/265 dead transitions. [2024-06-28 03:42:21,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 265 transitions, 2573 flow [2024-06-28 03:42:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:21,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 03:42:21,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 03:42:21,541 INFO L175 Difference]: Start difference. First operand has 340 places, 247 transitions, 2007 flow. Second operand 12 states and 157 transitions. [2024-06-28 03:42:21,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 265 transitions, 2573 flow [2024-06-28 03:42:21,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 265 transitions, 2511 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:21,696 INFO L231 Difference]: Finished difference. Result has 341 places, 247 transitions, 2005 flow [2024-06-28 03:42:21,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2005, PETRI_PLACES=341, PETRI_TRANSITIONS=247} [2024-06-28 03:42:21,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-28 03:42:21,697 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 247 transitions, 2005 flow [2024-06-28 03:42:21,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:21,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:21,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:21,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:42:21,699 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)] === [2024-06-28 03:42:21,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1173903660, now seen corresponding path program 5 times [2024-06-28 03:42:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:21,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695601390] [2024-06-28 03:42:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:21,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:22,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:22,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695601390] [2024-06-28 03:42:22,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695601390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:22,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:22,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:22,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043606324] [2024-06-28 03:42:22,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:22,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:22,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:22,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:22,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 247 transitions, 2005 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:22,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:22,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:22,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:23,103 INFO L124 PetriNetUnfolderBase]: 584/1203 cut-off events. [2024-06-28 03:42:23,103 INFO L125 PetriNetUnfolderBase]: For 46403/46403 co-relation queries the response was YES. [2024-06-28 03:42:23,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5402 conditions, 1203 events. 584/1203 cut-off events. For 46403/46403 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7616 event pairs, 96 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 5260. Up to 1057 conditions per place. [2024-06-28 03:42:23,115 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 243 selfloop transitions, 22 changer transitions 0/269 dead transitions. [2024-06-28 03:42:23,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 269 transitions, 2601 flow [2024-06-28 03:42:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 03:42:23,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 03:42:23,116 INFO L175 Difference]: Start difference. First operand has 341 places, 247 transitions, 2005 flow. Second operand 12 states and 154 transitions. [2024-06-28 03:42:23,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 269 transitions, 2601 flow [2024-06-28 03:42:23,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 269 transitions, 2522 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 03:42:23,309 INFO L231 Difference]: Finished difference. Result has 341 places, 248 transitions, 1990 flow [2024-06-28 03:42:23,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1990, PETRI_PLACES=341, PETRI_TRANSITIONS=248} [2024-06-28 03:42:23,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-28 03:42:23,309 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 248 transitions, 1990 flow [2024-06-28 03:42:23,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:23,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:23,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:23,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:42:23,310 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)] === [2024-06-28 03:42:23,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:23,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1393780100, now seen corresponding path program 1 times [2024-06-28 03:42:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:23,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900300135] [2024-06-28 03:42:23,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:23,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:24,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:24,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900300135] [2024-06-28 03:42:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900300135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:24,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:24,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:42:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664700182] [2024-06-28 03:42:24,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:24,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:42:24,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:24,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:42:24,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:42:24,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:24,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 248 transitions, 1990 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:24,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:24,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:24,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:24,843 INFO L124 PetriNetUnfolderBase]: 596/1231 cut-off events. [2024-06-28 03:42:24,844 INFO L125 PetriNetUnfolderBase]: For 70903/70903 co-relation queries the response was YES. [2024-06-28 03:42:24,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5595 conditions, 1231 events. 596/1231 cut-off events. For 70903/70903 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7805 event pairs, 108 based on Foata normal form. 8/1238 useless extension candidates. Maximal degree in co-relation 5453. Up to 1070 conditions per place. [2024-06-28 03:42:24,853 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 229 selfloop transitions, 22 changer transitions 13/268 dead transitions. [2024-06-28 03:42:24,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 268 transitions, 2652 flow [2024-06-28 03:42:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:42:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:42:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-28 03:42:24,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-28 03:42:24,854 INFO L175 Difference]: Start difference. First operand has 341 places, 248 transitions, 1990 flow. Second operand 13 states and 167 transitions. [2024-06-28 03:42:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 268 transitions, 2652 flow [2024-06-28 03:42:25,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 268 transitions, 2598 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:25,053 INFO L231 Difference]: Finished difference. Result has 344 places, 242 transitions, 1927 flow [2024-06-28 03:42:25,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1927, PETRI_PLACES=344, PETRI_TRANSITIONS=242} [2024-06-28 03:42:25,054 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-28 03:42:25,054 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 242 transitions, 1927 flow [2024-06-28 03:42:25,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:25,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:25,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:25,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:42:25,054 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)] === [2024-06-28 03:42:25,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:25,055 INFO L85 PathProgramCache]: Analyzing trace with hash -308515196, now seen corresponding path program 6 times [2024-06-28 03:42:25,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:25,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076934141] [2024-06-28 03:42:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:25,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:25,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:25,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076934141] [2024-06-28 03:42:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076934141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:25,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:25,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:25,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012991622] [2024-06-28 03:42:25,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:25,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:25,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:26,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:26,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 242 transitions, 1927 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:26,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:26,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:26,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:26,428 INFO L124 PetriNetUnfolderBase]: 583/1204 cut-off events. [2024-06-28 03:42:26,428 INFO L125 PetriNetUnfolderBase]: For 56375/56375 co-relation queries the response was YES. [2024-06-28 03:42:26,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5548 conditions, 1204 events. 583/1204 cut-off events. For 56375/56375 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7625 event pairs, 132 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 5405. Up to 1047 conditions per place. [2024-06-28 03:42:26,440 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 26 changer transitions 0/262 dead transitions. [2024-06-28 03:42:26,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 262 transitions, 2695 flow [2024-06-28 03:42:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 03:42:26,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 03:42:26,441 INFO L175 Difference]: Start difference. First operand has 344 places, 242 transitions, 1927 flow. Second operand 12 states and 157 transitions. [2024-06-28 03:42:26,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 262 transitions, 2695 flow [2024-06-28 03:42:26,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 262 transitions, 2631 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-28 03:42:26,648 INFO L231 Difference]: Finished difference. Result has 337 places, 244 transitions, 1957 flow [2024-06-28 03:42:26,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1957, PETRI_PLACES=337, PETRI_TRANSITIONS=244} [2024-06-28 03:42:26,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-28 03:42:26,649 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 244 transitions, 1957 flow [2024-06-28 03:42:26,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:26,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:26,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:26,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:42:26,650 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)] === [2024-06-28 03:42:26,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1222899978, now seen corresponding path program 7 times [2024-06-28 03:42:26,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:26,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444733214] [2024-06-28 03:42:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:26,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:27,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:27,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444733214] [2024-06-28 03:42:27,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444733214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:27,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:27,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:27,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663560967] [2024-06-28 03:42:27,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:27,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:27,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:27,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:27,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 244 transitions, 1957 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:27,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:27,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:27,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:27,971 INFO L124 PetriNetUnfolderBase]: 580/1198 cut-off events. [2024-06-28 03:42:27,972 INFO L125 PetriNetUnfolderBase]: For 47559/47559 co-relation queries the response was YES. [2024-06-28 03:42:27,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 1198 events. 580/1198 cut-off events. For 47559/47559 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7594 event pairs, 108 based on Foata normal form. 2/1199 useless extension candidates. Maximal degree in co-relation 5205. Up to 1030 conditions per place. [2024-06-28 03:42:27,983 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 38 changer transitions 0/260 dead transitions. [2024-06-28 03:42:27,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 260 transitions, 2507 flow [2024-06-28 03:42:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:42:27,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:42:27,985 INFO L175 Difference]: Start difference. First operand has 337 places, 244 transitions, 1957 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:42:27,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 260 transitions, 2507 flow [2024-06-28 03:42:28,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 260 transitions, 2446 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:28,173 INFO L231 Difference]: Finished difference. Result has 341 places, 244 transitions, 1976 flow [2024-06-28 03:42:28,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1976, PETRI_PLACES=341, PETRI_TRANSITIONS=244} [2024-06-28 03:42:28,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-28 03:42:28,188 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 244 transitions, 1976 flow [2024-06-28 03:42:28,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:28,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:28,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:28,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:42:28,189 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)] === [2024-06-28 03:42:28,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:28,189 INFO L85 PathProgramCache]: Analyzing trace with hash 636839636, now seen corresponding path program 8 times [2024-06-28 03:42:28,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:28,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869859383] [2024-06-28 03:42:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:28,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:29,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:29,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869859383] [2024-06-28 03:42:29,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869859383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:29,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:29,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:29,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200446271] [2024-06-28 03:42:29,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:29,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:29,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:29,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:29,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 244 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:29,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:29,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:29,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:29,693 INFO L124 PetriNetUnfolderBase]: 591/1219 cut-off events. [2024-06-28 03:42:29,693 INFO L125 PetriNetUnfolderBase]: For 56542/56542 co-relation queries the response was YES. [2024-06-28 03:42:29,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5663 conditions, 1219 events. 591/1219 cut-off events. For 56542/56542 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7733 event pairs, 109 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 5521. Up to 954 conditions per place. [2024-06-28 03:42:29,705 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 41 changer transitions 0/265 dead transitions. [2024-06-28 03:42:29,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 265 transitions, 2756 flow [2024-06-28 03:42:29,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-28 03:42:29,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-28 03:42:29,706 INFO L175 Difference]: Start difference. First operand has 341 places, 244 transitions, 1976 flow. Second operand 12 states and 161 transitions. [2024-06-28 03:42:29,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 265 transitions, 2756 flow [2024-06-28 03:42:29,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 265 transitions, 2678 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:29,938 INFO L231 Difference]: Finished difference. Result has 342 places, 246 transitions, 2022 flow [2024-06-28 03:42:29,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2022, PETRI_PLACES=342, PETRI_TRANSITIONS=246} [2024-06-28 03:42:29,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-28 03:42:29,939 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 246 transitions, 2022 flow [2024-06-28 03:42:29,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:29,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:29,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:29,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:42:29,939 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)] === [2024-06-28 03:42:29,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1875957494, now seen corresponding path program 9 times [2024-06-28 03:42:29,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:29,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989574284] [2024-06-28 03:42:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:29,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989574284] [2024-06-28 03:42:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989574284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:30,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170271658] [2024-06-28 03:42:30,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:30,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:30,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:30,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 246 transitions, 2022 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:30,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:30,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:30,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:31,314 INFO L124 PetriNetUnfolderBase]: 595/1227 cut-off events. [2024-06-28 03:42:31,314 INFO L125 PetriNetUnfolderBase]: For 57997/57997 co-relation queries the response was YES. [2024-06-28 03:42:31,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5756 conditions, 1227 events. 595/1227 cut-off events. For 57997/57997 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7767 event pairs, 115 based on Foata normal form. 2/1228 useless extension candidates. Maximal degree in co-relation 5613. Up to 1059 conditions per place. [2024-06-28 03:42:31,324 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 43 changer transitions 0/263 dead transitions. [2024-06-28 03:42:31,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 263 transitions, 2598 flow [2024-06-28 03:42:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:31,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 03:42:31,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-28 03:42:31,325 INFO L175 Difference]: Start difference. First operand has 342 places, 246 transitions, 2022 flow. Second operand 12 states and 155 transitions. [2024-06-28 03:42:31,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 263 transitions, 2598 flow [2024-06-28 03:42:31,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 263 transitions, 2523 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:31,554 INFO L231 Difference]: Finished difference. Result has 346 places, 247 transitions, 2059 flow [2024-06-28 03:42:31,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2059, PETRI_PLACES=346, PETRI_TRANSITIONS=247} [2024-06-28 03:42:31,554 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-28 03:42:31,555 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 247 transitions, 2059 flow [2024-06-28 03:42:31,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:31,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:31,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:31,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:42:31,562 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)] === [2024-06-28 03:42:31,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 917253328, now seen corresponding path program 10 times [2024-06-28 03:42:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:31,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567268296] [2024-06-28 03:42:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:31,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:32,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:32,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567268296] [2024-06-28 03:42:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567268296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562730070] [2024-06-28 03:42:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:32,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:32,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:32,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 247 transitions, 2059 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:32,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:32,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:32,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:32,911 INFO L124 PetriNetUnfolderBase]: 599/1236 cut-off events. [2024-06-28 03:42:32,911 INFO L125 PetriNetUnfolderBase]: For 59057/59057 co-relation queries the response was YES. [2024-06-28 03:42:32,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5832 conditions, 1236 events. 599/1236 cut-off events. For 59057/59057 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7847 event pairs, 144 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 5687. Up to 1104 conditions per place. [2024-06-28 03:42:32,924 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 25 changer transitions 0/264 dead transitions. [2024-06-28 03:42:32,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 264 transitions, 2635 flow [2024-06-28 03:42:32,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:42:32,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 03:42:32,925 INFO L175 Difference]: Start difference. First operand has 346 places, 247 transitions, 2059 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:42:32,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 264 transitions, 2635 flow [2024-06-28 03:42:33,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 264 transitions, 2539 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:33,150 INFO L231 Difference]: Finished difference. Result has 348 places, 248 transitions, 2037 flow [2024-06-28 03:42:33,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2037, PETRI_PLACES=348, PETRI_TRANSITIONS=248} [2024-06-28 03:42:33,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-28 03:42:33,150 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 248 transitions, 2037 flow [2024-06-28 03:42:33,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:33,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:33,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:33,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:42:33,151 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)] === [2024-06-28 03:42:33,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:33,151 INFO L85 PathProgramCache]: Analyzing trace with hash -965565424, now seen corresponding path program 11 times [2024-06-28 03:42:33,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:33,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578377590] [2024-06-28 03:42:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:33,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:33,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578377590] [2024-06-28 03:42:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578377590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:33,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:33,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432949172] [2024-06-28 03:42:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:33,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:33,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:33,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:34,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:34,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 248 transitions, 2037 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:34,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:34,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:34,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:34,405 INFO L124 PetriNetUnfolderBase]: 596/1231 cut-off events. [2024-06-28 03:42:34,405 INFO L125 PetriNetUnfolderBase]: For 51834/51834 co-relation queries the response was YES. [2024-06-28 03:42:34,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 1231 events. 596/1231 cut-off events. For 51834/51834 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7805 event pairs, 141 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 5441. Up to 1063 conditions per place. [2024-06-28 03:42:34,418 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 27 changer transitions 0/265 dead transitions. [2024-06-28 03:42:34,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 265 transitions, 2599 flow [2024-06-28 03:42:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:42:34,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:42:34,419 INFO L175 Difference]: Start difference. First operand has 348 places, 248 transitions, 2037 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:42:34,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 265 transitions, 2599 flow [2024-06-28 03:42:34,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 265 transitions, 2527 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:34,650 INFO L231 Difference]: Finished difference. Result has 350 places, 248 transitions, 2023 flow [2024-06-28 03:42:34,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2023, PETRI_PLACES=350, PETRI_TRANSITIONS=248} [2024-06-28 03:42:34,650 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-28 03:42:34,651 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 248 transitions, 2023 flow [2024-06-28 03:42:34,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:34,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:34,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:34,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:42:34,651 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)] === [2024-06-28 03:42:34,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2075822066, now seen corresponding path program 2 times [2024-06-28 03:42:34,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:34,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663876884] [2024-06-28 03:42:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:35,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:35,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663876884] [2024-06-28 03:42:35,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663876884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:35,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:35,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:42:35,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688584032] [2024-06-28 03:42:35,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:35,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:42:35,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:42:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:42:35,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:35,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 248 transitions, 2023 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:35,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:35,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:35,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:36,007 INFO L124 PetriNetUnfolderBase]: 608/1262 cut-off events. [2024-06-28 03:42:36,007 INFO L125 PetriNetUnfolderBase]: For 78743/78743 co-relation queries the response was YES. [2024-06-28 03:42:36,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5799 conditions, 1262 events. 608/1262 cut-off events. For 78743/78743 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8035 event pairs, 124 based on Foata normal form. 8/1269 useless extension candidates. Maximal degree in co-relation 5652. Up to 1063 conditions per place. [2024-06-28 03:42:36,020 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 209 selfloop transitions, 45 changer transitions 9/267 dead transitions. [2024-06-28 03:42:36,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 267 transitions, 2679 flow [2024-06-28 03:42:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:42:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:42:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 169 transitions. [2024-06-28 03:42:36,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:42:36,021 INFO L175 Difference]: Start difference. First operand has 350 places, 248 transitions, 2023 flow. Second operand 13 states and 169 transitions. [2024-06-28 03:42:36,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 267 transitions, 2679 flow [2024-06-28 03:42:36,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 267 transitions, 2596 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:42:36,252 INFO L231 Difference]: Finished difference. Result has 351 places, 245 transitions, 2010 flow [2024-06-28 03:42:36,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2010, PETRI_PLACES=351, PETRI_TRANSITIONS=245} [2024-06-28 03:42:36,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-28 03:42:36,253 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 245 transitions, 2010 flow [2024-06-28 03:42:36,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:36,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:36,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:36,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:42:36,253 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)] === [2024-06-28 03:42:36,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:36,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2076148496, now seen corresponding path program 3 times [2024-06-28 03:42:36,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:36,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961384774] [2024-06-28 03:42:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:36,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961384774] [2024-06-28 03:42:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961384774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:37,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:37,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:42:37,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245620367] [2024-06-28 03:42:37,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:37,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:42:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:42:37,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:42:37,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:37,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 245 transitions, 2010 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:37,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:37,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:37,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:37,631 INFO L124 PetriNetUnfolderBase]: 621/1291 cut-off events. [2024-06-28 03:42:37,631 INFO L125 PetriNetUnfolderBase]: For 104789/104789 co-relation queries the response was YES. [2024-06-28 03:42:37,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 1291 events. 621/1291 cut-off events. For 104789/104789 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8224 event pairs, 130 based on Foata normal form. 6/1296 useless extension candidates. Maximal degree in co-relation 6632. Up to 1049 conditions per place. [2024-06-28 03:42:37,645 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 214 selfloop transitions, 42 changer transitions 8/268 dead transitions. [2024-06-28 03:42:37,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 268 transitions, 2920 flow [2024-06-28 03:42:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:42:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:42:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 171 transitions. [2024-06-28 03:42:37,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110576923076923 [2024-06-28 03:42:37,646 INFO L175 Difference]: Start difference. First operand has 351 places, 245 transitions, 2010 flow. Second operand 13 states and 171 transitions. [2024-06-28 03:42:37,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 268 transitions, 2920 flow [2024-06-28 03:42:38,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 268 transitions, 2822 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:42:38,025 INFO L231 Difference]: Finished difference. Result has 349 places, 241 transitions, 1962 flow [2024-06-28 03:42:38,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1962, PETRI_PLACES=349, PETRI_TRANSITIONS=241} [2024-06-28 03:42:38,025 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-28 03:42:38,026 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 241 transitions, 1962 flow [2024-06-28 03:42:38,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:38,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:38,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:38,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:42:38,026 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)] === [2024-06-28 03:42:38,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:38,027 INFO L85 PathProgramCache]: Analyzing trace with hash -366646690, now seen corresponding path program 12 times [2024-06-28 03:42:38,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:38,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871460936] [2024-06-28 03:42:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:38,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:38,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:38,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871460936] [2024-06-28 03:42:38,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871460936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:38,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:38,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:38,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326354260] [2024-06-28 03:42:38,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:38,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:38,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:38,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:38,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:38,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 241 transitions, 1962 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:38,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:38,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:38,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:39,284 INFO L124 PetriNetUnfolderBase]: 609/1260 cut-off events. [2024-06-28 03:42:39,285 INFO L125 PetriNetUnfolderBase]: For 88543/88543 co-relation queries the response was YES. [2024-06-28 03:42:39,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 1260 events. 609/1260 cut-off events. For 88543/88543 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7969 event pairs, 148 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 6447. Up to 1116 conditions per place. [2024-06-28 03:42:39,297 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 23 changer transitions 0/264 dead transitions. [2024-06-28 03:42:39,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 264 transitions, 2554 flow [2024-06-28 03:42:39,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:39,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 03:42:39,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 03:42:39,298 INFO L175 Difference]: Start difference. First operand has 349 places, 241 transitions, 1962 flow. Second operand 12 states and 154 transitions. [2024-06-28 03:42:39,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 264 transitions, 2554 flow [2024-06-28 03:42:39,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 264 transitions, 2458 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 03:42:39,663 INFO L231 Difference]: Finished difference. Result has 343 places, 242 transitions, 1936 flow [2024-06-28 03:42:39,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1936, PETRI_PLACES=343, PETRI_TRANSITIONS=242} [2024-06-28 03:42:39,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-28 03:42:39,663 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 242 transitions, 1936 flow [2024-06-28 03:42:39,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:39,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:39,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:39,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:42:39,664 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)] === [2024-06-28 03:42:39,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash -19119592, now seen corresponding path program 13 times [2024-06-28 03:42:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537409388] [2024-06-28 03:42:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:40,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:40,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537409388] [2024-06-28 03:42:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537409388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102345022] [2024-06-28 03:42:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:40,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:40,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:40,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:40,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:40,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 242 transitions, 1936 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:40,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:40,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:40,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:40,999 INFO L124 PetriNetUnfolderBase]: 620/1281 cut-off events. [2024-06-28 03:42:40,999 INFO L125 PetriNetUnfolderBase]: For 95604/95604 co-relation queries the response was YES. [2024-06-28 03:42:41,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6850 conditions, 1281 events. 620/1281 cut-off events. For 95604/95604 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8123 event pairs, 153 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 6706. Up to 1126 conditions per place. [2024-06-28 03:42:41,012 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 28 changer transitions 0/264 dead transitions. [2024-06-28 03:42:41,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 264 transitions, 2730 flow [2024-06-28 03:42:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-28 03:42:41,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-28 03:42:41,019 INFO L175 Difference]: Start difference. First operand has 343 places, 242 transitions, 1936 flow. Second operand 12 states and 158 transitions. [2024-06-28 03:42:41,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 264 transitions, 2730 flow [2024-06-28 03:42:41,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 264 transitions, 2670 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:41,374 INFO L231 Difference]: Finished difference. Result has 345 places, 244 transitions, 1978 flow [2024-06-28 03:42:41,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1978, PETRI_PLACES=345, PETRI_TRANSITIONS=244} [2024-06-28 03:42:41,374 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-28 03:42:41,375 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 244 transitions, 1978 flow [2024-06-28 03:42:41,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:41,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:41,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:42:41,375 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)] === [2024-06-28 03:42:41,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash -527754672, now seen corresponding path program 14 times [2024-06-28 03:42:41,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:41,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130469839] [2024-06-28 03:42:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:42,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:42,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130469839] [2024-06-28 03:42:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130469839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:42,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957038606] [2024-06-28 03:42:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:42,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:42,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:42,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:42,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:42,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:42,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 244 transitions, 1978 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:42,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:42,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:42,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:42,622 INFO L124 PetriNetUnfolderBase]: 624/1289 cut-off events. [2024-06-28 03:42:42,622 INFO L125 PetriNetUnfolderBase]: For 97740/97740 co-relation queries the response was YES. [2024-06-28 03:42:42,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6919 conditions, 1289 events. 624/1289 cut-off events. For 97740/97740 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8164 event pairs, 148 based on Foata normal form. 2/1290 useless extension candidates. Maximal degree in co-relation 6774. Up to 1104 conditions per place. [2024-06-28 03:42:42,635 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 29 changer transitions 0/266 dead transitions. [2024-06-28 03:42:42,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 266 transitions, 2762 flow [2024-06-28 03:42:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 03:42:42,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:42:42,636 INFO L175 Difference]: Start difference. First operand has 345 places, 244 transitions, 1978 flow. Second operand 12 states and 160 transitions. [2024-06-28 03:42:42,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 266 transitions, 2762 flow [2024-06-28 03:42:43,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 266 transitions, 2703 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:43,019 INFO L231 Difference]: Finished difference. Result has 349 places, 245 transitions, 2005 flow [2024-06-28 03:42:43,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2005, PETRI_PLACES=349, PETRI_TRANSITIONS=245} [2024-06-28 03:42:43,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-28 03:42:43,020 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 245 transitions, 2005 flow [2024-06-28 03:42:43,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:43,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:43,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:43,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:42:43,020 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)] === [2024-06-28 03:42:43,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:43,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1437943910, now seen corresponding path program 15 times [2024-06-28 03:42:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:43,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945649609] [2024-06-28 03:42:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:43,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:43,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:43,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945649609] [2024-06-28 03:42:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945649609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:43,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837948934] [2024-06-28 03:42:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:43,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:43,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:43,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 245 transitions, 2005 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:43,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:43,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:43,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:44,243 INFO L124 PetriNetUnfolderBase]: 628/1297 cut-off events. [2024-06-28 03:42:44,243 INFO L125 PetriNetUnfolderBase]: For 99724/99724 co-relation queries the response was YES. [2024-06-28 03:42:44,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6996 conditions, 1297 events. 628/1297 cut-off events. For 99724/99724 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8255 event pairs, 171 based on Foata normal form. 2/1298 useless extension candidates. Maximal degree in co-relation 6849. Up to 1177 conditions per place. [2024-06-28 03:42:44,256 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 27 changer transitions 0/263 dead transitions. [2024-06-28 03:42:44,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 263 transitions, 2583 flow [2024-06-28 03:42:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:42:44,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 03:42:44,258 INFO L175 Difference]: Start difference. First operand has 349 places, 245 transitions, 2005 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:42:44,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 263 transitions, 2583 flow [2024-06-28 03:42:44,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 263 transitions, 2505 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:44,642 INFO L231 Difference]: Finished difference. Result has 351 places, 246 transitions, 2005 flow [2024-06-28 03:42:44,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2005, PETRI_PLACES=351, PETRI_TRANSITIONS=246} [2024-06-28 03:42:44,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-28 03:42:44,643 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 246 transitions, 2005 flow [2024-06-28 03:42:44,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:44,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:44,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:44,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:42:44,643 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)] === [2024-06-28 03:42:44,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1145860876, now seen corresponding path program 16 times [2024-06-28 03:42:44,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:44,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326862051] [2024-06-28 03:42:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:45,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:45,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326862051] [2024-06-28 03:42:45,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326862051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:45,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:45,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:45,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532961744] [2024-06-28 03:42:45,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:45,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:45,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:45,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:45,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:45,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 246 transitions, 2005 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:45,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:45,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:45,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:45,804 INFO L124 PetriNetUnfolderBase]: 648/1345 cut-off events. [2024-06-28 03:42:45,805 INFO L125 PetriNetUnfolderBase]: For 141750/141750 co-relation queries the response was YES. [2024-06-28 03:42:45,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7575 conditions, 1345 events. 648/1345 cut-off events. For 141750/141750 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8514 event pairs, 170 based on Foata normal form. 8/1352 useless extension candidates. Maximal degree in co-relation 7427. Up to 1097 conditions per place. [2024-06-28 03:42:45,819 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 25 changer transitions 7/270 dead transitions. [2024-06-28 03:42:45,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 270 transitions, 2895 flow [2024-06-28 03:42:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-28 03:42:45,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 03:42:45,820 INFO L175 Difference]: Start difference. First operand has 351 places, 246 transitions, 2005 flow. Second operand 12 states and 162 transitions. [2024-06-28 03:42:45,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 270 transitions, 2895 flow [2024-06-28 03:42:46,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 270 transitions, 2819 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:46,369 INFO L231 Difference]: Finished difference. Result has 353 places, 243 transitions, 1959 flow [2024-06-28 03:42:46,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1959, PETRI_PLACES=353, PETRI_TRANSITIONS=243} [2024-06-28 03:42:46,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-28 03:42:46,369 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 243 transitions, 1959 flow [2024-06-28 03:42:46,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:46,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:46,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:46,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:42:46,370 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)] === [2024-06-28 03:42:46,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash -536261266, now seen corresponding path program 17 times [2024-06-28 03:42:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701765798] [2024-06-28 03:42:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:47,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701765798] [2024-06-28 03:42:47,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701765798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:47,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:47,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397124206] [2024-06-28 03:42:47,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:47,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:47,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:47,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:47,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:47,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 243 transitions, 1959 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:47,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:47,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:47,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:47,478 INFO L124 PetriNetUnfolderBase]: 634/1315 cut-off events. [2024-06-28 03:42:47,478 INFO L125 PetriNetUnfolderBase]: For 118620/118620 co-relation queries the response was YES. [2024-06-28 03:42:47,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7448 conditions, 1315 events. 634/1315 cut-off events. For 118620/118620 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8321 event pairs, 138 based on Foata normal form. 2/1316 useless extension candidates. Maximal degree in co-relation 7299. Up to 1136 conditions per place. [2024-06-28 03:42:47,491 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 26 changer transitions 0/266 dead transitions. [2024-06-28 03:42:47,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 266 transitions, 2559 flow [2024-06-28 03:42:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 03:42:47,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 03:42:47,492 INFO L175 Difference]: Start difference. First operand has 353 places, 243 transitions, 1959 flow. Second operand 12 states and 152 transitions. [2024-06-28 03:42:47,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 266 transitions, 2559 flow [2024-06-28 03:42:47,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 266 transitions, 2504 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:47,977 INFO L231 Difference]: Finished difference. Result has 352 places, 244 transitions, 1986 flow [2024-06-28 03:42:47,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1986, PETRI_PLACES=352, PETRI_TRANSITIONS=244} [2024-06-28 03:42:47,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-28 03:42:47,978 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 244 transitions, 1986 flow [2024-06-28 03:42:47,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:47,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:47,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:47,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:42:47,979 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)] === [2024-06-28 03:42:47,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:47,979 INFO L85 PathProgramCache]: Analyzing trace with hash 125130414, now seen corresponding path program 4 times [2024-06-28 03:42:47,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:47,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215827212] [2024-06-28 03:42:47,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:47,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215827212] [2024-06-28 03:42:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215827212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:48,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:48,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:42:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265473266] [2024-06-28 03:42:48,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:48,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:42:48,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:42:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:42:48,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:48,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 244 transitions, 1986 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:48,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:48,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:48,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:49,373 INFO L124 PetriNetUnfolderBase]: 624/1297 cut-off events. [2024-06-28 03:42:49,373 INFO L125 PetriNetUnfolderBase]: For 111414/111414 co-relation queries the response was YES. [2024-06-28 03:42:49,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6581 conditions, 1297 events. 624/1297 cut-off events. For 111414/111414 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8248 event pairs, 171 based on Foata normal form. 8/1304 useless extension candidates. Maximal degree in co-relation 6432. Up to 1148 conditions per place. [2024-06-28 03:42:49,386 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 228 selfloop transitions, 24 changer transitions 9/265 dead transitions. [2024-06-28 03:42:49,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 265 transitions, 2640 flow [2024-06-28 03:42:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:42:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:42:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 03:42:49,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 03:42:49,387 INFO L175 Difference]: Start difference. First operand has 352 places, 244 transitions, 1986 flow. Second operand 13 states and 165 transitions. [2024-06-28 03:42:49,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 265 transitions, 2640 flow [2024-06-28 03:42:49,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 265 transitions, 2568 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:49,732 INFO L231 Difference]: Finished difference. Result has 355 places, 241 transitions, 1937 flow [2024-06-28 03:42:49,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1937, PETRI_PLACES=355, PETRI_TRANSITIONS=241} [2024-06-28 03:42:49,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-28 03:42:49,732 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 241 transitions, 1937 flow [2024-06-28 03:42:49,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:49,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:49,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:49,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:42:49,733 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)] === [2024-06-28 03:42:49,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1872319900, now seen corresponding path program 18 times [2024-06-28 03:42:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:49,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912913289] [2024-06-28 03:42:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:49,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:50,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:50,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912913289] [2024-06-28 03:42:50,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912913289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:50,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:50,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:50,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528666379] [2024-06-28 03:42:50,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:50,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:50,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:50,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:50,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 241 transitions, 1937 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:50,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:50,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:50,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:50,936 INFO L124 PetriNetUnfolderBase]: 618/1281 cut-off events. [2024-06-28 03:42:50,937 INFO L125 PetriNetUnfolderBase]: For 95169/95169 co-relation queries the response was YES. [2024-06-28 03:42:50,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6631 conditions, 1281 events. 618/1281 cut-off events. For 95169/95169 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8120 event pairs, 144 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 6481. Up to 1146 conditions per place. [2024-06-28 03:42:50,950 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2024-06-28 03:42:50,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 258 transitions, 2729 flow [2024-06-28 03:42:50,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:50,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 03:42:50,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 03:42:50,951 INFO L175 Difference]: Start difference. First operand has 355 places, 241 transitions, 1937 flow. Second operand 12 states and 153 transitions. [2024-06-28 03:42:50,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 258 transitions, 2729 flow [2024-06-28 03:42:51,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 258 transitions, 2673 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:51,324 INFO L231 Difference]: Finished difference. Result has 352 places, 243 transitions, 1995 flow [2024-06-28 03:42:51,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1995, PETRI_PLACES=352, PETRI_TRANSITIONS=243} [2024-06-28 03:42:51,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-28 03:42:51,325 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 243 transitions, 1995 flow [2024-06-28 03:42:51,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:51,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:51,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:51,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:42:51,325 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)] === [2024-06-28 03:42:51,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1866963100, now seen corresponding path program 19 times [2024-06-28 03:42:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:51,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941012259] [2024-06-28 03:42:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:51,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:52,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:52,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941012259] [2024-06-28 03:42:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941012259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:52,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681058846] [2024-06-28 03:42:52,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:52,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:52,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:52,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:52,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 243 transitions, 1995 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:52,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:52,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:52,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:52,682 INFO L124 PetriNetUnfolderBase]: 615/1278 cut-off events. [2024-06-28 03:42:52,683 INFO L125 PetriNetUnfolderBase]: For 86037/86037 co-relation queries the response was YES. [2024-06-28 03:42:52,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6418 conditions, 1278 events. 615/1278 cut-off events. For 86037/86037 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8113 event pairs, 165 based on Foata normal form. 2/1279 useless extension candidates. Maximal degree in co-relation 6268. Up to 1131 conditions per place. [2024-06-28 03:42:52,695 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 38 changer transitions 0/258 dead transitions. [2024-06-28 03:42:52,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 258 transitions, 2539 flow [2024-06-28 03:42:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:42:52,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:42:52,697 INFO L175 Difference]: Start difference. First operand has 352 places, 243 transitions, 1995 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:42:52,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 258 transitions, 2539 flow [2024-06-28 03:42:53,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 258 transitions, 2454 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:53,027 INFO L231 Difference]: Finished difference. Result has 355 places, 243 transitions, 1992 flow [2024-06-28 03:42:53,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1992, PETRI_PLACES=355, PETRI_TRANSITIONS=243} [2024-06-28 03:42:53,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-28 03:42:53,027 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 243 transitions, 1992 flow [2024-06-28 03:42:53,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:53,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:53,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:53,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:42:53,028 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)] === [2024-06-28 03:42:53,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:53,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1724710300, now seen corresponding path program 20 times [2024-06-28 03:42:53,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:53,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190703070] [2024-06-28 03:42:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:53,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:53,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:53,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190703070] [2024-06-28 03:42:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190703070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:53,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:53,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896513881] [2024-06-28 03:42:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:53,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:53,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:54,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:54,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 243 transitions, 1992 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:54,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:54,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:54,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:54,497 INFO L124 PetriNetUnfolderBase]: 626/1299 cut-off events. [2024-06-28 03:42:54,497 INFO L125 PetriNetUnfolderBase]: For 97662/97662 co-relation queries the response was YES. [2024-06-28 03:42:54,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6776 conditions, 1299 events. 626/1299 cut-off events. For 97662/97662 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8263 event pairs, 138 based on Foata normal form. 2/1300 useless extension candidates. Maximal degree in co-relation 6625. Up to 965 conditions per place. [2024-06-28 03:42:54,510 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 213 selfloop transitions, 47 changer transitions 0/264 dead transitions. [2024-06-28 03:42:54,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 264 transitions, 2810 flow [2024-06-28 03:42:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 03:42:54,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 03:42:54,512 INFO L175 Difference]: Start difference. First operand has 355 places, 243 transitions, 1992 flow. Second operand 11 states and 148 transitions. [2024-06-28 03:42:54,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 264 transitions, 2810 flow [2024-06-28 03:42:54,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 264 transitions, 2732 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:54,928 INFO L231 Difference]: Finished difference. Result has 356 places, 245 transitions, 2076 flow [2024-06-28 03:42:54,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2076, PETRI_PLACES=356, PETRI_TRANSITIONS=245} [2024-06-28 03:42:54,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-28 03:42:54,929 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 245 transitions, 2076 flow [2024-06-28 03:42:54,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:54,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:54,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:54,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:42:54,929 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)] === [2024-06-28 03:42:54,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:54,930 INFO L85 PathProgramCache]: Analyzing trace with hash 867017766, now seen corresponding path program 21 times [2024-06-28 03:42:54,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:54,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613362299] [2024-06-28 03:42:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:54,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:55,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:55,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613362299] [2024-06-28 03:42:55,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613362299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:55,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:55,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:55,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467096061] [2024-06-28 03:42:55,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:55,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:55,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:55,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:55,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:56,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:56,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 245 transitions, 2076 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:56,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:56,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:56,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:56,463 INFO L124 PetriNetUnfolderBase]: 623/1294 cut-off events. [2024-06-28 03:42:56,463 INFO L125 PetriNetUnfolderBase]: For 87822/87822 co-relation queries the response was YES. [2024-06-28 03:42:56,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6612 conditions, 1294 events. 623/1294 cut-off events. For 87822/87822 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8240 event pairs, 152 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 6461. Up to 1053 conditions per place. [2024-06-28 03:42:56,476 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 44 changer transitions 0/262 dead transitions. [2024-06-28 03:42:56,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 262 transitions, 2632 flow [2024-06-28 03:42:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:42:56,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:42:56,477 INFO L175 Difference]: Start difference. First operand has 356 places, 245 transitions, 2076 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:42:56,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 262 transitions, 2632 flow [2024-06-28 03:42:56,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 262 transitions, 2531 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:56,829 INFO L231 Difference]: Finished difference. Result has 359 places, 245 transitions, 2071 flow [2024-06-28 03:42:56,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2071, PETRI_PLACES=359, PETRI_TRANSITIONS=245} [2024-06-28 03:42:56,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-28 03:42:56,829 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 245 transitions, 2071 flow [2024-06-28 03:42:56,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:56,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:56,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:56,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:42:56,830 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)] === [2024-06-28 03:42:56,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1512565256, now seen corresponding path program 22 times [2024-06-28 03:42:56,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:56,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982512466] [2024-06-28 03:42:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:56,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:57,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:57,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982512466] [2024-06-28 03:42:57,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982512466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:57,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:57,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:57,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148494573] [2024-06-28 03:42:57,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:57,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:57,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:57,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:57,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:57,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:57,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 245 transitions, 2071 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:57,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:57,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:57,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:58,223 INFO L124 PetriNetUnfolderBase]: 627/1302 cut-off events. [2024-06-28 03:42:58,223 INFO L125 PetriNetUnfolderBase]: For 87201/87201 co-relation queries the response was YES. [2024-06-28 03:42:58,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 1302 events. 627/1302 cut-off events. For 87201/87201 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8277 event pairs, 123 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 6500. Up to 1027 conditions per place. [2024-06-28 03:42:58,236 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 37 changer transitions 0/265 dead transitions. [2024-06-28 03:42:58,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 265 transitions, 2661 flow [2024-06-28 03:42:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:58,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:58,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 03:42:58,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:42:58,237 INFO L175 Difference]: Start difference. First operand has 359 places, 245 transitions, 2071 flow. Second operand 11 states and 140 transitions. [2024-06-28 03:42:58,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 265 transitions, 2661 flow [2024-06-28 03:42:58,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 265 transitions, 2534 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 03:42:58,656 INFO L231 Difference]: Finished difference. Result has 357 places, 246 transitions, 2054 flow [2024-06-28 03:42:58,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2054, PETRI_PLACES=357, PETRI_TRANSITIONS=246} [2024-06-28 03:42:58,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-28 03:42:58,656 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 246 transitions, 2054 flow [2024-06-28 03:42:58,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:58,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:58,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:58,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:42:58,657 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)] === [2024-06-28 03:42:58,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash 530207154, now seen corresponding path program 23 times [2024-06-28 03:42:58,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:58,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238686919] [2024-06-28 03:42:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:59,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238686919] [2024-06-28 03:42:59,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238686919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:59,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723255132] [2024-06-28 03:42:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:59,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:59,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:59,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:59,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:59,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:42:59,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 246 transitions, 2054 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:59,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:59,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:42:59,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:59,967 INFO L124 PetriNetUnfolderBase]: 638/1323 cut-off events. [2024-06-28 03:42:59,967 INFO L125 PetriNetUnfolderBase]: For 95616/95616 co-relation queries the response was YES. [2024-06-28 03:42:59,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6959 conditions, 1323 events. 638/1323 cut-off events. For 95616/95616 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8408 event pairs, 182 based on Foata normal form. 2/1324 useless extension candidates. Maximal degree in co-relation 6809. Up to 1105 conditions per place. [2024-06-28 03:42:59,981 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 39 changer transitions 0/264 dead transitions. [2024-06-28 03:42:59,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 264 transitions, 2858 flow [2024-06-28 03:42:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:59,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 03:42:59,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 03:42:59,982 INFO L175 Difference]: Start difference. First operand has 357 places, 246 transitions, 2054 flow. Second operand 11 states and 145 transitions. [2024-06-28 03:42:59,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 264 transitions, 2858 flow [2024-06-28 03:43:00,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 264 transitions, 2746 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:00,367 INFO L231 Difference]: Finished difference. Result has 359 places, 248 transitions, 2086 flow [2024-06-28 03:43:00,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2086, PETRI_PLACES=359, PETRI_TRANSITIONS=248} [2024-06-28 03:43:00,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-28 03:43:00,368 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 248 transitions, 2086 flow [2024-06-28 03:43:00,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:00,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:00,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:00,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:43:00,368 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)] === [2024-06-28 03:43:00,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash 175746460, now seen corresponding path program 24 times [2024-06-28 03:43:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:00,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276835748] [2024-06-28 03:43:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:01,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276835748] [2024-06-28 03:43:01,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276835748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:01,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:01,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331328068] [2024-06-28 03:43:01,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:01,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:01,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:01,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:01,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:01,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:01,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 248 transitions, 2086 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:01,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:01,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:01,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:01,668 INFO L124 PetriNetUnfolderBase]: 635/1317 cut-off events. [2024-06-28 03:43:01,668 INFO L125 PetriNetUnfolderBase]: For 82234/82234 co-relation queries the response was YES. [2024-06-28 03:43:01,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6630 conditions, 1317 events. 635/1317 cut-off events. For 82234/82234 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8383 event pairs, 149 based on Foata normal form. 2/1318 useless extension candidates. Maximal degree in co-relation 6479. Up to 1098 conditions per place. [2024-06-28 03:43:01,683 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 52 changer transitions 0/262 dead transitions. [2024-06-28 03:43:01,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 262 transitions, 2634 flow [2024-06-28 03:43:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:43:01,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:43:01,684 INFO L175 Difference]: Start difference. First operand has 359 places, 248 transitions, 2086 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:43:01,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 262 transitions, 2634 flow [2024-06-28 03:43:02,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 262 transitions, 2550 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:02,059 INFO L231 Difference]: Finished difference. Result has 362 places, 248 transitions, 2112 flow [2024-06-28 03:43:02,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2112, PETRI_PLACES=362, PETRI_TRANSITIONS=248} [2024-06-28 03:43:02,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-28 03:43:02,060 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 248 transitions, 2112 flow [2024-06-28 03:43:02,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:02,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:02,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:02,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:43:02,061 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)] === [2024-06-28 03:43:02,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash -971658744, now seen corresponding path program 25 times [2024-06-28 03:43:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:02,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735281627] [2024-06-28 03:43:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:02,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:02,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:02,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735281627] [2024-06-28 03:43:02,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735281627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:02,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:02,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:02,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755166184] [2024-06-28 03:43:02,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:02,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:02,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:02,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:02,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:02,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:02,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 248 transitions, 2112 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:02,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:02,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:02,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:03,264 INFO L124 PetriNetUnfolderBase]: 646/1339 cut-off events. [2024-06-28 03:43:03,264 INFO L125 PetriNetUnfolderBase]: For 91518/91518 co-relation queries the response was YES. [2024-06-28 03:43:03,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6985 conditions, 1339 events. 646/1339 cut-off events. For 91518/91518 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8528 event pairs, 182 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 6833. Up to 969 conditions per place. [2024-06-28 03:43:03,278 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 45 changer transitions 0/267 dead transitions. [2024-06-28 03:43:03,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 267 transitions, 2912 flow [2024-06-28 03:43:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:43:03,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 03:43:03,279 INFO L175 Difference]: Start difference. First operand has 362 places, 248 transitions, 2112 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:43:03,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 267 transitions, 2912 flow [2024-06-28 03:43:03,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 267 transitions, 2798 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:03,675 INFO L231 Difference]: Finished difference. Result has 362 places, 250 transitions, 2142 flow [2024-06-28 03:43:03,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2142, PETRI_PLACES=362, PETRI_TRANSITIONS=250} [2024-06-28 03:43:03,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-28 03:43:03,676 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 250 transitions, 2142 flow [2024-06-28 03:43:03,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:03,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:03,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:03,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:43:03,677 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)] === [2024-06-28 03:43:03,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash 201411080, now seen corresponding path program 26 times [2024-06-28 03:43:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:03,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991553947] [2024-06-28 03:43:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:03,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:04,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:04,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991553947] [2024-06-28 03:43:04,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991553947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:04,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:04,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:04,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092679697] [2024-06-28 03:43:04,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:04,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:04,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:04,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 250 transitions, 2142 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:04,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:04,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:04,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:04,948 INFO L124 PetriNetUnfolderBase]: 650/1347 cut-off events. [2024-06-28 03:43:04,948 INFO L125 PetriNetUnfolderBase]: For 91759/91759 co-relation queries the response was YES. [2024-06-28 03:43:04,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7066 conditions, 1347 events. 650/1347 cut-off events. For 91759/91759 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8601 event pairs, 192 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 6914. Up to 1176 conditions per place. [2024-06-28 03:43:04,962 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 39 changer transitions 0/265 dead transitions. [2024-06-28 03:43:04,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 265 transitions, 2720 flow [2024-06-28 03:43:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:43:04,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:43:04,963 INFO L175 Difference]: Start difference. First operand has 362 places, 250 transitions, 2142 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:43:04,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 265 transitions, 2720 flow [2024-06-28 03:43:05,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 265 transitions, 2640 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:05,368 INFO L231 Difference]: Finished difference. Result has 365 places, 251 transitions, 2172 flow [2024-06-28 03:43:05,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2172, PETRI_PLACES=365, PETRI_TRANSITIONS=251} [2024-06-28 03:43:05,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-28 03:43:05,369 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 251 transitions, 2172 flow [2024-06-28 03:43:05,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:05,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:05,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:05,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:43:05,369 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)] === [2024-06-28 03:43:05,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1726410022, now seen corresponding path program 27 times [2024-06-28 03:43:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:05,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260444896] [2024-06-28 03:43:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:05,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:06,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:06,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260444896] [2024-06-28 03:43:06,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260444896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:06,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:06,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:06,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487822870] [2024-06-28 03:43:06,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:06,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:06,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:06,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 251 transitions, 2172 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:06,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:06,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:06,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:06,700 INFO L124 PetriNetUnfolderBase]: 654/1355 cut-off events. [2024-06-28 03:43:06,700 INFO L125 PetriNetUnfolderBase]: For 91553/91553 co-relation queries the response was YES. [2024-06-28 03:43:06,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7119 conditions, 1355 events. 654/1355 cut-off events. For 91553/91553 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8655 event pairs, 194 based on Foata normal form. 2/1356 useless extension candidates. Maximal degree in co-relation 6966. Up to 1184 conditions per place. [2024-06-28 03:43:06,715 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 37 changer transitions 0/266 dead transitions. [2024-06-28 03:43:06,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 266 transitions, 2750 flow [2024-06-28 03:43:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:06,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 03:43:06,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:43:06,716 INFO L175 Difference]: Start difference. First operand has 365 places, 251 transitions, 2172 flow. Second operand 11 states and 141 transitions. [2024-06-28 03:43:06,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 266 transitions, 2750 flow [2024-06-28 03:43:07,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 266 transitions, 2658 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:07,206 INFO L231 Difference]: Finished difference. Result has 366 places, 252 transitions, 2184 flow [2024-06-28 03:43:07,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2184, PETRI_PLACES=366, PETRI_TRANSITIONS=252} [2024-06-28 03:43:07,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-28 03:43:07,207 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 252 transitions, 2184 flow [2024-06-28 03:43:07,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:07,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:07,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:07,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:43:07,208 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)] === [2024-06-28 03:43:07,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash 248420548, now seen corresponding path program 28 times [2024-06-28 03:43:07,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:07,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314229050] [2024-06-28 03:43:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:07,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:08,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:08,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314229050] [2024-06-28 03:43:08,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314229050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:08,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:08,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:08,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210041877] [2024-06-28 03:43:08,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:08,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:08,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:08,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:08,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:08,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:08,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 252 transitions, 2184 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:08,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:08,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:08,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:08,564 INFO L124 PetriNetUnfolderBase]: 651/1350 cut-off events. [2024-06-28 03:43:08,565 INFO L125 PetriNetUnfolderBase]: For 82347/82347 co-relation queries the response was YES. [2024-06-28 03:43:08,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6881 conditions, 1350 events. 651/1350 cut-off events. For 82347/82347 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8648 event pairs, 189 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 6728. Up to 1107 conditions per place. [2024-06-28 03:43:08,578 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 41 changer transitions 0/267 dead transitions. [2024-06-28 03:43:08,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 267 transitions, 2744 flow [2024-06-28 03:43:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:43:08,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:43:08,579 INFO L175 Difference]: Start difference. First operand has 366 places, 252 transitions, 2184 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:43:08,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 267 transitions, 2744 flow [2024-06-28 03:43:08,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 267 transitions, 2642 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:08,970 INFO L231 Difference]: Finished difference. Result has 367 places, 252 transitions, 2170 flow [2024-06-28 03:43:08,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2170, PETRI_PLACES=367, PETRI_TRANSITIONS=252} [2024-06-28 03:43:08,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-28 03:43:08,970 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 252 transitions, 2170 flow [2024-06-28 03:43:08,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:08,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:08,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:08,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:43:08,971 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)] === [2024-06-28 03:43:08,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash 872739622, now seen corresponding path program 5 times [2024-06-28 03:43:08,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:08,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220385993] [2024-06-28 03:43:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:08,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:09,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:09,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220385993] [2024-06-28 03:43:09,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220385993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:09,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:09,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:09,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194392500] [2024-06-28 03:43:09,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:09,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:09,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:09,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:10,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:10,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 252 transitions, 2170 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:10,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:10,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:10,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:10,482 INFO L124 PetriNetUnfolderBase]: 663/1382 cut-off events. [2024-06-28 03:43:10,482 INFO L125 PetriNetUnfolderBase]: For 109608/109608 co-relation queries the response was YES. [2024-06-28 03:43:10,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7081 conditions, 1382 events. 663/1382 cut-off events. For 109608/109608 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8917 event pairs, 193 based on Foata normal form. 8/1389 useless extension candidates. Maximal degree in co-relation 6928. Up to 1208 conditions per place. [2024-06-28 03:43:10,493 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 35 changer transitions 9/271 dead transitions. [2024-06-28 03:43:10,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 271 transitions, 2830 flow [2024-06-28 03:43:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:10,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 03:43:10,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 03:43:10,501 INFO L175 Difference]: Start difference. First operand has 367 places, 252 transitions, 2170 flow. Second operand 12 states and 154 transitions. [2024-06-28 03:43:10,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 271 transitions, 2830 flow [2024-06-28 03:43:10,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 271 transitions, 2700 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:43:10,938 INFO L231 Difference]: Finished difference. Result has 367 places, 249 transitions, 2096 flow [2024-06-28 03:43:10,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2096, PETRI_PLACES=367, PETRI_TRANSITIONS=249} [2024-06-28 03:43:10,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-28 03:43:10,939 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 249 transitions, 2096 flow [2024-06-28 03:43:10,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:10,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:10,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:10,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:43:10,939 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)] === [2024-06-28 03:43:10,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1597581800, now seen corresponding path program 6 times [2024-06-28 03:43:10,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:10,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287466994] [2024-06-28 03:43:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:12,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:12,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287466994] [2024-06-28 03:43:12,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287466994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:12,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:12,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:12,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104700148] [2024-06-28 03:43:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:12,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:12,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:12,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:12,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:12,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 249 transitions, 2096 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:12,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:12,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:12,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:12,519 INFO L124 PetriNetUnfolderBase]: 676/1413 cut-off events. [2024-06-28 03:43:12,519 INFO L125 PetriNetUnfolderBase]: For 132344/132344 co-relation queries the response was YES. [2024-06-28 03:43:12,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7985 conditions, 1413 events. 676/1413 cut-off events. For 132344/132344 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9109 event pairs, 209 based on Foata normal form. 6/1418 useless extension candidates. Maximal degree in co-relation 7833. Up to 1180 conditions per place. [2024-06-28 03:43:12,535 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 36 changer transitions 6/270 dead transitions. [2024-06-28 03:43:12,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 270 transitions, 3002 flow [2024-06-28 03:43:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 03:43:12,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 03:43:12,536 INFO L175 Difference]: Start difference. First operand has 367 places, 249 transitions, 2096 flow. Second operand 12 states and 157 transitions. [2024-06-28 03:43:12,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 270 transitions, 3002 flow [2024-06-28 03:43:13,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 270 transitions, 2914 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:13,075 INFO L231 Difference]: Finished difference. Result has 365 places, 247 transitions, 2082 flow [2024-06-28 03:43:13,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2082, PETRI_PLACES=365, PETRI_TRANSITIONS=247} [2024-06-28 03:43:13,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-28 03:43:13,076 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 247 transitions, 2082 flow [2024-06-28 03:43:13,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:13,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:13,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:13,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:43:13,076 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)] === [2024-06-28 03:43:13,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:13,077 INFO L85 PathProgramCache]: Analyzing trace with hash 597776896, now seen corresponding path program 7 times [2024-06-28 03:43:13,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:13,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009318967] [2024-06-28 03:43:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:13,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:14,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:14,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009318967] [2024-06-28 03:43:14,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009318967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:14,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:14,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:14,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106464181] [2024-06-28 03:43:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:14,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:14,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:14,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:14,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:14,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:14,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 247 transitions, 2082 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:14,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:14,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:14,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:14,598 INFO L124 PetriNetUnfolderBase]: 652/1360 cut-off events. [2024-06-28 03:43:14,599 INFO L125 PetriNetUnfolderBase]: For 105239/105239 co-relation queries the response was YES. [2024-06-28 03:43:14,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6874 conditions, 1360 events. 652/1360 cut-off events. For 105239/105239 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8703 event pairs, 165 based on Foata normal form. 8/1367 useless extension candidates. Maximal degree in co-relation 6723. Up to 1131 conditions per place. [2024-06-28 03:43:14,615 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 194 selfloop transitions, 54 changer transitions 12/264 dead transitions. [2024-06-28 03:43:14,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 264 transitions, 2718 flow [2024-06-28 03:43:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 03:43:14,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 03:43:14,616 INFO L175 Difference]: Start difference. First operand has 365 places, 247 transitions, 2082 flow. Second operand 12 states and 154 transitions. [2024-06-28 03:43:14,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 264 transitions, 2718 flow [2024-06-28 03:43:14,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 264 transitions, 2644 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:14,983 INFO L231 Difference]: Finished difference. Result has 364 places, 242 transitions, 2086 flow [2024-06-28 03:43:14,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2086, PETRI_PLACES=364, PETRI_TRANSITIONS=242} [2024-06-28 03:43:14,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-28 03:43:14,983 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 242 transitions, 2086 flow [2024-06-28 03:43:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:14,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:14,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:14,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:43:14,984 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)] === [2024-06-28 03:43:14,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:14,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1556852886, now seen corresponding path program 29 times [2024-06-28 03:43:14,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:14,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069042299] [2024-06-28 03:43:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:14,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:15,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069042299] [2024-06-28 03:43:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069042299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:15,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:15,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470352688] [2024-06-28 03:43:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:15,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:15,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:15,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:15,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:15,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:15,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 242 transitions, 2086 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:15,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:15,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:15,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:16,197 INFO L124 PetriNetUnfolderBase]: 637/1324 cut-off events. [2024-06-28 03:43:16,198 INFO L125 PetriNetUnfolderBase]: For 78926/78926 co-relation queries the response was YES. [2024-06-28 03:43:16,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 1324 events. 637/1324 cut-off events. For 78926/78926 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8445 event pairs, 200 based on Foata normal form. 2/1323 useless extension candidates. Maximal degree in co-relation 6539. Up to 1102 conditions per place. [2024-06-28 03:43:16,212 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 59 changer transitions 0/255 dead transitions. [2024-06-28 03:43:16,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 255 transitions, 2636 flow [2024-06-28 03:43:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:43:16,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:43:16,213 INFO L175 Difference]: Start difference. First operand has 364 places, 242 transitions, 2086 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:43:16,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 255 transitions, 2636 flow [2024-06-28 03:43:16,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 255 transitions, 2506 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-28 03:43:16,555 INFO L231 Difference]: Finished difference. Result has 356 places, 243 transitions, 2102 flow [2024-06-28 03:43:16,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2102, PETRI_PLACES=356, PETRI_TRANSITIONS=243} [2024-06-28 03:43:16,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-28 03:43:16,555 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 243 transitions, 2102 flow [2024-06-28 03:43:16,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:16,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:16,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:16,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:43:16,556 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)] === [2024-06-28 03:43:16,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:16,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1040670442, now seen corresponding path program 30 times [2024-06-28 03:43:16,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:16,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981644151] [2024-06-28 03:43:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:16,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:17,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:17,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981644151] [2024-06-28 03:43:17,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981644151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:17,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:17,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801265544] [2024-06-28 03:43:17,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:17,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:17,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:17,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 243 transitions, 2102 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:17,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:17,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:17,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:17,906 INFO L124 PetriNetUnfolderBase]: 641/1332 cut-off events. [2024-06-28 03:43:17,906 INFO L125 PetriNetUnfolderBase]: For 74392/74392 co-relation queries the response was YES. [2024-06-28 03:43:17,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6664 conditions, 1332 events. 641/1332 cut-off events. For 74392/74392 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8518 event pairs, 202 based on Foata normal form. 2/1331 useless extension candidates. Maximal degree in co-relation 6517. Up to 1110 conditions per place. [2024-06-28 03:43:17,920 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 50 changer transitions 0/256 dead transitions. [2024-06-28 03:43:17,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 256 transitions, 2654 flow [2024-06-28 03:43:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:43:17,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 03:43:17,921 INFO L175 Difference]: Start difference. First operand has 356 places, 243 transitions, 2102 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:43:17,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 256 transitions, 2654 flow [2024-06-28 03:43:18,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 256 transitions, 2520 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:18,281 INFO L231 Difference]: Finished difference. Result has 358 places, 244 transitions, 2096 flow [2024-06-28 03:43:18,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2096, PETRI_PLACES=358, PETRI_TRANSITIONS=244} [2024-06-28 03:43:18,281 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-28 03:43:18,282 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 244 transitions, 2096 flow [2024-06-28 03:43:18,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:18,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:18,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:18,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:43:18,282 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)] === [2024-06-28 03:43:18,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1234609852, now seen corresponding path program 31 times [2024-06-28 03:43:18,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:18,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674055317] [2024-06-28 03:43:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:18,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:19,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:19,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674055317] [2024-06-28 03:43:19,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674055317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:19,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:19,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:19,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931106748] [2024-06-28 03:43:19,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:19,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:19,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:19,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:19,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:19,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:19,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 244 transitions, 2096 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:19,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:19,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:19,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:19,681 INFO L124 PetriNetUnfolderBase]: 645/1344 cut-off events. [2024-06-28 03:43:19,682 INFO L125 PetriNetUnfolderBase]: For 76087/76087 co-relation queries the response was YES. [2024-06-28 03:43:19,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6705 conditions, 1344 events. 645/1344 cut-off events. For 76087/76087 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8592 event pairs, 206 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 6557. Up to 1118 conditions per place. [2024-06-28 03:43:19,696 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 51 changer transitions 0/257 dead transitions. [2024-06-28 03:43:19,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 257 transitions, 2652 flow [2024-06-28 03:43:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 03:43:19,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:43:19,697 INFO L175 Difference]: Start difference. First operand has 358 places, 244 transitions, 2096 flow. Second operand 11 states and 143 transitions. [2024-06-28 03:43:19,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 257 transitions, 2652 flow [2024-06-28 03:43:20,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 257 transitions, 2534 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:20,020 INFO L231 Difference]: Finished difference. Result has 360 places, 245 transitions, 2110 flow [2024-06-28 03:43:20,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2110, PETRI_PLACES=360, PETRI_TRANSITIONS=245} [2024-06-28 03:43:20,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-28 03:43:20,021 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 245 transitions, 2110 flow [2024-06-28 03:43:20,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:20,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:20,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:20,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:43:20,022 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)] === [2024-06-28 03:43:20,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:20,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1997723844, now seen corresponding path program 32 times [2024-06-28 03:43:20,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:20,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519984681] [2024-06-28 03:43:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:20,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519984681] [2024-06-28 03:43:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519984681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:20,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:20,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663425803] [2024-06-28 03:43:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:20,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:20,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:20,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 245 transitions, 2110 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:20,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:20,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:20,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:21,314 INFO L124 PetriNetUnfolderBase]: 649/1352 cut-off events. [2024-06-28 03:43:21,314 INFO L125 PetriNetUnfolderBase]: For 77863/77863 co-relation queries the response was YES. [2024-06-28 03:43:21,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1352 events. 649/1352 cut-off events. For 77863/77863 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8644 event pairs, 206 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 6613. Up to 1076 conditions per place. [2024-06-28 03:43:21,328 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 201 selfloop transitions, 54 changer transitions 0/259 dead transitions. [2024-06-28 03:43:21,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 259 transitions, 2674 flow [2024-06-28 03:43:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 03:43:21,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 03:43:21,329 INFO L175 Difference]: Start difference. First operand has 360 places, 245 transitions, 2110 flow. Second operand 11 states and 146 transitions. [2024-06-28 03:43:21,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 259 transitions, 2674 flow [2024-06-28 03:43:21,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 259 transitions, 2552 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:21,664 INFO L231 Difference]: Finished difference. Result has 362 places, 246 transitions, 2128 flow [2024-06-28 03:43:21,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2128, PETRI_PLACES=362, PETRI_TRANSITIONS=246} [2024-06-28 03:43:21,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-28 03:43:21,664 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 246 transitions, 2128 flow [2024-06-28 03:43:21,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:21,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:21,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:21,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:43:21,665 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)] === [2024-06-28 03:43:21,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash -221224358, now seen corresponding path program 33 times [2024-06-28 03:43:21,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:21,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482237654] [2024-06-28 03:43:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:22,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482237654] [2024-06-28 03:43:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482237654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:22,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:22,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:22,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800175678] [2024-06-28 03:43:22,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:22,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:22,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:22,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:22,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:22,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 246 transitions, 2128 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:22,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:22,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:22,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:23,056 INFO L124 PetriNetUnfolderBase]: 653/1360 cut-off events. [2024-06-28 03:43:23,056 INFO L125 PetriNetUnfolderBase]: For 79649/79649 co-relation queries the response was YES. [2024-06-28 03:43:23,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 1360 events. 653/1360 cut-off events. For 79649/79649 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8721 event pairs, 210 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 6681. Up to 1134 conditions per place. [2024-06-28 03:43:23,069 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 46 changer transitions 0/259 dead transitions. [2024-06-28 03:43:23,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 259 transitions, 2692 flow [2024-06-28 03:43:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:43:23,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 03:43:23,070 INFO L175 Difference]: Start difference. First operand has 362 places, 246 transitions, 2128 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:43:23,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 259 transitions, 2692 flow [2024-06-28 03:43:23,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 259 transitions, 2562 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:23,392 INFO L231 Difference]: Finished difference. Result has 364 places, 247 transitions, 2124 flow [2024-06-28 03:43:23,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2124, PETRI_PLACES=364, PETRI_TRANSITIONS=247} [2024-06-28 03:43:23,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-28 03:43:23,393 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 247 transitions, 2124 flow [2024-06-28 03:43:23,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:23,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:23,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:23,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:43:23,394 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)] === [2024-06-28 03:43:23,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:23,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1580015710, now seen corresponding path program 34 times [2024-06-28 03:43:23,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:23,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505711248] [2024-06-28 03:43:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:24,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:24,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505711248] [2024-06-28 03:43:24,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505711248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:24,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:24,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:24,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831030144] [2024-06-28 03:43:24,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:24,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:24,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:24,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:24,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:24,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 247 transitions, 2124 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:24,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:24,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:24,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:24,695 INFO L124 PetriNetUnfolderBase]: 664/1381 cut-off events. [2024-06-28 03:43:24,696 INFO L125 PetriNetUnfolderBase]: For 90761/90761 co-relation queries the response was YES. [2024-06-28 03:43:24,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7162 conditions, 1381 events. 664/1381 cut-off events. For 90761/90761 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8883 event pairs, 213 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 7011. Up to 1116 conditions per place. [2024-06-28 03:43:24,710 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 48 changer transitions 0/263 dead transitions. [2024-06-28 03:43:24,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 263 transitions, 2922 flow [2024-06-28 03:43:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 03:43:24,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-28 03:43:24,711 INFO L175 Difference]: Start difference. First operand has 364 places, 247 transitions, 2124 flow. Second operand 11 states and 151 transitions. [2024-06-28 03:43:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 263 transitions, 2922 flow [2024-06-28 03:43:25,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 263 transitions, 2806 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:25,070 INFO L231 Difference]: Finished difference. Result has 366 places, 249 transitions, 2170 flow [2024-06-28 03:43:25,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2170, PETRI_PLACES=366, PETRI_TRANSITIONS=249} [2024-06-28 03:43:25,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-28 03:43:25,070 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 249 transitions, 2170 flow [2024-06-28 03:43:25,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:25,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:25,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:25,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:43:25,071 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)] === [2024-06-28 03:43:25,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash -21922568, now seen corresponding path program 35 times [2024-06-28 03:43:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904294483] [2024-06-28 03:43:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:25,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:25,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904294483] [2024-06-28 03:43:25,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904294483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:25,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:25,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:25,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024099479] [2024-06-28 03:43:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:25,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:25,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:25,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:25,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:26,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:26,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 249 transitions, 2170 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:26,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:26,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:26,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:26,470 INFO L124 PetriNetUnfolderBase]: 661/1372 cut-off events. [2024-06-28 03:43:26,470 INFO L125 PetriNetUnfolderBase]: For 83353/83353 co-relation queries the response was YES. [2024-06-28 03:43:26,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6919 conditions, 1372 events. 661/1372 cut-off events. For 83353/83353 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8806 event pairs, 212 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 6767. Up to 1150 conditions per place. [2024-06-28 03:43:26,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 47 changer transitions 0/261 dead transitions. [2024-06-28 03:43:26,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 261 transitions, 2710 flow [2024-06-28 03:43:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:43:26,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 03:43:26,485 INFO L175 Difference]: Start difference. First operand has 366 places, 249 transitions, 2170 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:43:26,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 261 transitions, 2710 flow [2024-06-28 03:43:26,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 261 transitions, 2599 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 03:43:26,828 INFO L231 Difference]: Finished difference. Result has 370 places, 249 transitions, 2157 flow [2024-06-28 03:43:26,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2157, PETRI_PLACES=370, PETRI_TRANSITIONS=249} [2024-06-28 03:43:26,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-28 03:43:26,829 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 249 transitions, 2157 flow [2024-06-28 03:43:26,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:26,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:26,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:26,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:43:26,830 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)] === [2024-06-28 03:43:26,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1528646152, now seen corresponding path program 36 times [2024-06-28 03:43:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:26,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213330582] [2024-06-28 03:43:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:26,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:27,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:27,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213330582] [2024-06-28 03:43:27,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213330582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:27,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:27,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608970232] [2024-06-28 03:43:27,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:27,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:27,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:27,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:27,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:27,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:27,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 249 transitions, 2157 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:27,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:27,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:27,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:28,018 INFO L124 PetriNetUnfolderBase]: 665/1384 cut-off events. [2024-06-28 03:43:28,019 INFO L125 PetriNetUnfolderBase]: For 84631/84631 co-relation queries the response was YES. [2024-06-28 03:43:28,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6983 conditions, 1384 events. 665/1384 cut-off events. For 84631/84631 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8922 event pairs, 216 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 6829. Up to 1158 conditions per place. [2024-06-28 03:43:28,034 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 49 changer transitions 0/262 dead transitions. [2024-06-28 03:43:28,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 262 transitions, 2731 flow [2024-06-28 03:43:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 03:43:28,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:43:28,035 INFO L175 Difference]: Start difference. First operand has 370 places, 249 transitions, 2157 flow. Second operand 11 states and 144 transitions. [2024-06-28 03:43:28,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 262 transitions, 2731 flow [2024-06-28 03:43:28,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 262 transitions, 2631 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:28,409 INFO L231 Difference]: Finished difference. Result has 371 places, 250 transitions, 2193 flow [2024-06-28 03:43:28,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2193, PETRI_PLACES=371, PETRI_TRANSITIONS=250} [2024-06-28 03:43:28,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-28 03:43:28,410 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 250 transitions, 2193 flow [2024-06-28 03:43:28,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:28,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:28,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:28,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:43:28,410 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)] === [2024-06-28 03:43:28,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:28,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1384611472, now seen corresponding path program 37 times [2024-06-28 03:43:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:28,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692978720] [2024-06-28 03:43:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:29,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:29,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692978720] [2024-06-28 03:43:29,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692978720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:29,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:29,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:29,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892957012] [2024-06-28 03:43:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:29,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:29,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:29,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:29,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:29,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:29,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 250 transitions, 2193 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:29,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:29,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:29,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:29,523 INFO L124 PetriNetUnfolderBase]: 669/1392 cut-off events. [2024-06-28 03:43:29,524 INFO L125 PetriNetUnfolderBase]: For 86923/86923 co-relation queries the response was YES. [2024-06-28 03:43:29,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7088 conditions, 1392 events. 669/1392 cut-off events. For 86923/86923 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8972 event pairs, 216 based on Foata normal form. 2/1391 useless extension candidates. Maximal degree in co-relation 6933. Up to 1144 conditions per place. [2024-06-28 03:43:29,539 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 50 changer transitions 0/264 dead transitions. [2024-06-28 03:43:29,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 264 transitions, 2775 flow [2024-06-28 03:43:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 03:43:29,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 03:43:29,540 INFO L175 Difference]: Start difference. First operand has 371 places, 250 transitions, 2193 flow. Second operand 11 states and 147 transitions. [2024-06-28 03:43:29,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 264 transitions, 2775 flow [2024-06-28 03:43:29,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 264 transitions, 2649 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:29,907 INFO L231 Difference]: Finished difference. Result has 373 places, 251 transitions, 2207 flow [2024-06-28 03:43:29,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2207, PETRI_PLACES=373, PETRI_TRANSITIONS=251} [2024-06-28 03:43:29,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-28 03:43:29,908 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 251 transitions, 2207 flow [2024-06-28 03:43:29,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:29,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:29,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:29,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:43:29,908 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)] === [2024-06-28 03:43:29,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:29,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1381036552, now seen corresponding path program 38 times [2024-06-28 03:43:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:29,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154742741] [2024-06-28 03:43:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:29,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:30,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:30,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154742741] [2024-06-28 03:43:30,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154742741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:30,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:30,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:30,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690490388] [2024-06-28 03:43:30,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:30,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:30,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:30,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:30,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:30,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:30,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 251 transitions, 2207 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:30,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:30,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:30,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:30,997 INFO L124 PetriNetUnfolderBase]: 666/1387 cut-off events. [2024-06-28 03:43:30,998 INFO L125 PetriNetUnfolderBase]: For 78573/78573 co-relation queries the response was YES. [2024-06-28 03:43:31,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6823 conditions, 1387 events. 666/1387 cut-off events. For 78573/78573 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8950 event pairs, 213 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 6667. Up to 995 conditions per place. [2024-06-28 03:43:31,013 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 58 changer transitions 0/265 dead transitions. [2024-06-28 03:43:31,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 265 transitions, 2759 flow [2024-06-28 03:43:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 03:43:31,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 03:43:31,014 INFO L175 Difference]: Start difference. First operand has 373 places, 251 transitions, 2207 flow. Second operand 11 states and 148 transitions. [2024-06-28 03:43:31,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 265 transitions, 2759 flow [2024-06-28 03:43:31,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 265 transitions, 2629 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:31,359 INFO L231 Difference]: Finished difference. Result has 375 places, 251 transitions, 2197 flow [2024-06-28 03:43:31,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2197, PETRI_PLACES=375, PETRI_TRANSITIONS=251} [2024-06-28 03:43:31,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-28 03:43:31,359 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 251 transitions, 2197 flow [2024-06-28 03:43:31,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:31,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:31,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:31,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:43:31,360 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)] === [2024-06-28 03:43:31,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:31,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1801597538, now seen corresponding path program 8 times [2024-06-28 03:43:31,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:31,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913722406] [2024-06-28 03:43:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:31,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:32,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:32,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913722406] [2024-06-28 03:43:32,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913722406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:32,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:32,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:32,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986554662] [2024-06-28 03:43:32,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:32,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:32,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:32,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:32,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:32,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:32,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 251 transitions, 2197 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:32,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:32,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:32,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:32,706 INFO L124 PetriNetUnfolderBase]: 696/1451 cut-off events. [2024-06-28 03:43:32,706 INFO L125 PetriNetUnfolderBase]: For 134696/134696 co-relation queries the response was YES. [2024-06-28 03:43:32,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8042 conditions, 1451 events. 696/1451 cut-off events. For 134696/134696 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9406 event pairs, 196 based on Foata normal form. 6/1451 useless extension candidates. Maximal degree in co-relation 7885. Up to 1106 conditions per place. [2024-06-28 03:43:32,723 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 67 changer transitions 6/270 dead transitions. [2024-06-28 03:43:32,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 270 transitions, 3083 flow [2024-06-28 03:43:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 03:43:32,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-28 03:43:32,724 INFO L175 Difference]: Start difference. First operand has 375 places, 251 transitions, 2197 flow. Second operand 12 states and 163 transitions. [2024-06-28 03:43:32,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 270 transitions, 3083 flow [2024-06-28 03:43:33,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 270 transitions, 2788 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-28 03:43:33,277 INFO L231 Difference]: Finished difference. Result has 374 places, 249 transitions, 2028 flow [2024-06-28 03:43:33,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2028, PETRI_PLACES=374, PETRI_TRANSITIONS=249} [2024-06-28 03:43:33,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-28 03:43:33,277 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 249 transitions, 2028 flow [2024-06-28 03:43:33,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:33,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:33,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:33,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:43:33,278 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)] === [2024-06-28 03:43:33,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:33,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1801271108, now seen corresponding path program 9 times [2024-06-28 03:43:33,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:33,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517867121] [2024-06-28 03:43:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:33,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:34,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517867121] [2024-06-28 03:43:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517867121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:34,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:34,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:34,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412317089] [2024-06-28 03:43:34,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:34,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:34,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:34,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:34,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:34,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:34,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 249 transitions, 2028 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:34,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:34,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:34,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:34,695 INFO L124 PetriNetUnfolderBase]: 672/1403 cut-off events. [2024-06-28 03:43:34,696 INFO L125 PetriNetUnfolderBase]: For 110889/110889 co-relation queries the response was YES. [2024-06-28 03:43:34,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6588 conditions, 1403 events. 672/1403 cut-off events. For 110889/110889 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9097 event pairs, 190 based on Foata normal form. 8/1405 useless extension candidates. Maximal degree in co-relation 6433. Up to 1106 conditions per place. [2024-06-28 03:43:34,710 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 63 changer transitions 13/264 dead transitions. [2024-06-28 03:43:34,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 264 transitions, 2648 flow [2024-06-28 03:43:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-28 03:43:34,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-28 03:43:34,712 INFO L175 Difference]: Start difference. First operand has 374 places, 249 transitions, 2028 flow. Second operand 12 states and 158 transitions. [2024-06-28 03:43:34,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 264 transitions, 2648 flow [2024-06-28 03:43:35,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 264 transitions, 2510 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:35,029 INFO L231 Difference]: Finished difference. Result has 373 places, 244 transitions, 1990 flow [2024-06-28 03:43:35,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1990, PETRI_PLACES=373, PETRI_TRANSITIONS=244} [2024-06-28 03:43:35,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-28 03:43:35,030 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 244 transitions, 1990 flow [2024-06-28 03:43:35,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:35,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:35,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:35,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:43:35,030 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)] === [2024-06-28 03:43:35,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1474939014, now seen corresponding path program 10 times [2024-06-28 03:43:35,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:35,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545956203] [2024-06-28 03:43:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:35,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:35,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:35,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545956203] [2024-06-28 03:43:35,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545956203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:35,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:35,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:35,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068557316] [2024-06-28 03:43:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:35,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:35,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:35,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:35,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:36,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:36,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 244 transitions, 1990 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:36,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:36,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:36,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:36,531 INFO L124 PetriNetUnfolderBase]: 683/1426 cut-off events. [2024-06-28 03:43:36,531 INFO L125 PetriNetUnfolderBase]: For 131478/131478 co-relation queries the response was YES. [2024-06-28 03:43:36,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7535 conditions, 1426 events. 683/1426 cut-off events. For 131478/131478 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9219 event pairs, 196 based on Foata normal form. 6/1426 useless extension candidates. Maximal degree in co-relation 7381. Up to 1086 conditions per place. [2024-06-28 03:43:36,547 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 60 changer transitions 6/263 dead transitions. [2024-06-28 03:43:36,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 263 transitions, 2860 flow [2024-06-28 03:43:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-28 03:43:36,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-28 03:43:36,548 INFO L175 Difference]: Start difference. First operand has 373 places, 244 transitions, 1990 flow. Second operand 12 states and 164 transitions. [2024-06-28 03:43:36,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 263 transitions, 2860 flow [2024-06-28 03:43:37,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 263 transitions, 2698 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:37,170 INFO L231 Difference]: Finished difference. Result has 366 places, 242 transitions, 1960 flow [2024-06-28 03:43:37,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1960, PETRI_PLACES=366, PETRI_TRANSITIONS=242} [2024-06-28 03:43:37,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-28 03:43:37,171 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 242 transitions, 1960 flow [2024-06-28 03:43:37,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:37,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:37,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:37,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:43:37,172 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)] === [2024-06-28 03:43:37,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:37,172 INFO L85 PathProgramCache]: Analyzing trace with hash -233813210, now seen corresponding path program 11 times [2024-06-28 03:43:37,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:37,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293451017] [2024-06-28 03:43:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:37,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:38,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:38,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293451017] [2024-06-28 03:43:38,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293451017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:38,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:38,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:38,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840015522] [2024-06-28 03:43:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:38,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:38,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:38,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:38,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:38,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:38,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 242 transitions, 1960 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:38,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:38,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:38,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:38,654 INFO L124 PetriNetUnfolderBase]: 681/1424 cut-off events. [2024-06-28 03:43:38,655 INFO L125 PetriNetUnfolderBase]: For 135258/135258 co-relation queries the response was YES. [2024-06-28 03:43:38,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7416 conditions, 1424 events. 681/1424 cut-off events. For 135258/135258 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9163 event pairs, 202 based on Foata normal form. 8/1426 useless extension candidates. Maximal degree in co-relation 7265. Up to 1132 conditions per place. [2024-06-28 03:43:38,667 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 77 changer transitions 9/257 dead transitions. [2024-06-28 03:43:38,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 257 transitions, 2558 flow [2024-06-28 03:43:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-28 03:43:38,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-28 03:43:38,668 INFO L175 Difference]: Start difference. First operand has 366 places, 242 transitions, 1960 flow. Second operand 12 states and 158 transitions. [2024-06-28 03:43:38,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 257 transitions, 2558 flow [2024-06-28 03:43:39,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 257 transitions, 2436 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:39,135 INFO L231 Difference]: Finished difference. Result has 365 places, 239 transitions, 1980 flow [2024-06-28 03:43:39,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1980, PETRI_PLACES=365, PETRI_TRANSITIONS=239} [2024-06-28 03:43:39,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-28 03:43:39,135 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 239 transitions, 1980 flow [2024-06-28 03:43:39,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:39,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:39,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:39,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 03:43:39,136 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)] === [2024-06-28 03:43:39,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:39,136 INFO L85 PathProgramCache]: Analyzing trace with hash -233486780, now seen corresponding path program 12 times [2024-06-28 03:43:39,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:39,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623782996] [2024-06-28 03:43:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:39,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:39,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:39,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623782996] [2024-06-28 03:43:39,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623782996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:39,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:39,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:39,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451225097] [2024-06-28 03:43:39,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:39,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:39,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:39,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:40,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:40,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 239 transitions, 1980 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:40,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:40,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:40,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:40,508 INFO L124 PetriNetUnfolderBase]: 672/1411 cut-off events. [2024-06-28 03:43:40,508 INFO L125 PetriNetUnfolderBase]: For 121468/121468 co-relation queries the response was YES. [2024-06-28 03:43:40,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 1411 events. 672/1411 cut-off events. For 121468/121468 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9100 event pairs, 198 based on Foata normal form. 6/1411 useless extension candidates. Maximal degree in co-relation 7209. Up to 1122 conditions per place. [2024-06-28 03:43:40,523 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 164 selfloop transitions, 74 changer transitions 12/254 dead transitions. [2024-06-28 03:43:40,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 254 transitions, 2554 flow [2024-06-28 03:43:40,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 03:43:40,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:43:40,524 INFO L175 Difference]: Start difference. First operand has 365 places, 239 transitions, 1980 flow. Second operand 12 states and 156 transitions. [2024-06-28 03:43:40,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 254 transitions, 2554 flow [2024-06-28 03:43:40,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 254 transitions, 2390 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:40,990 INFO L231 Difference]: Finished difference. Result has 363 places, 235 transitions, 1946 flow [2024-06-28 03:43:40,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1946, PETRI_PLACES=363, PETRI_TRANSITIONS=235} [2024-06-28 03:43:40,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-28 03:43:40,990 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 235 transitions, 1946 flow [2024-06-28 03:43:40,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:40,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:40,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:40,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 03:43:40,991 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)] === [2024-06-28 03:43:40,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1318985118, now seen corresponding path program 13 times [2024-06-28 03:43:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:40,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314322200] [2024-06-28 03:43:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:42,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:42,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314322200] [2024-06-28 03:43:42,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314322200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:42,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:42,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:42,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777381465] [2024-06-28 03:43:42,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:42,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:42,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:42,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:42,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 235 transitions, 1946 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:42,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:42,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:42,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:42,736 INFO L124 PetriNetUnfolderBase]: 679/1431 cut-off events. [2024-06-28 03:43:42,736 INFO L125 PetriNetUnfolderBase]: For 142875/142875 co-relation queries the response was YES. [2024-06-28 03:43:42,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7929 conditions, 1431 events. 679/1431 cut-off events. For 142875/142875 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9165 event pairs, 319 based on Foata normal form. 6/1436 useless extension candidates. Maximal degree in co-relation 7780. Up to 1213 conditions per place. [2024-06-28 03:43:42,752 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 222 selfloop transitions, 21 changer transitions 9/256 dead transitions. [2024-06-28 03:43:42,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 256 transitions, 2778 flow [2024-06-28 03:43:42,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:43:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:43:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 172 transitions. [2024-06-28 03:43:42,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-28 03:43:42,753 INFO L175 Difference]: Start difference. First operand has 363 places, 235 transitions, 1946 flow. Second operand 14 states and 172 transitions. [2024-06-28 03:43:42,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 256 transitions, 2778 flow [2024-06-28 03:43:43,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 256 transitions, 2604 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:43,293 INFO L231 Difference]: Finished difference. Result has 359 places, 232 transitions, 1813 flow [2024-06-28 03:43:43,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1813, PETRI_PLACES=359, PETRI_TRANSITIONS=232} [2024-06-28 03:43:43,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-28 03:43:43,293 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 232 transitions, 1813 flow [2024-06-28 03:43:43,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:43,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:43,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:43,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 03:43:43,294 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)] === [2024-06-28 03:43:43,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:43,294 INFO L85 PathProgramCache]: Analyzing trace with hash -243930502, now seen corresponding path program 14 times [2024-06-28 03:43:43,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:43,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43276145] [2024-06-28 03:43:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:43,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:44,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:44,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43276145] [2024-06-28 03:43:44,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43276145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:44,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:44,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:44,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684175018] [2024-06-28 03:43:44,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:44,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:44,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:44,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:44,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:44,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:44,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 232 transitions, 1813 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:44,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:44,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:44,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:44,967 INFO L124 PetriNetUnfolderBase]: 691/1453 cut-off events. [2024-06-28 03:43:44,967 INFO L125 PetriNetUnfolderBase]: For 166809/166809 co-relation queries the response was YES. [2024-06-28 03:43:44,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8609 conditions, 1453 events. 691/1453 cut-off events. For 166809/166809 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9326 event pairs, 331 based on Foata normal form. 6/1458 useless extension candidates. Maximal degree in co-relation 8463. Up to 1282 conditions per place. [2024-06-28 03:43:44,982 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 16 changer transitions 6/251 dead transitions. [2024-06-28 03:43:44,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 251 transitions, 2619 flow [2024-06-28 03:43:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 03:43:44,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 03:43:44,983 INFO L175 Difference]: Start difference. First operand has 359 places, 232 transitions, 1813 flow. Second operand 12 states and 151 transitions. [2024-06-28 03:43:44,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 251 transitions, 2619 flow [2024-06-28 03:43:45,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 251 transitions, 2571 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 03:43:45,611 INFO L231 Difference]: Finished difference. Result has 354 places, 230 transitions, 1789 flow [2024-06-28 03:43:45,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1789, PETRI_PLACES=354, PETRI_TRANSITIONS=230} [2024-06-28 03:43:45,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-28 03:43:45,612 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 230 transitions, 1789 flow [2024-06-28 03:43:45,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:45,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:45,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:45,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 03:43:45,612 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)] === [2024-06-28 03:43:45,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:45,612 INFO L85 PathProgramCache]: Analyzing trace with hash -67039184, now seen corresponding path program 15 times [2024-06-28 03:43:45,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:45,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598300881] [2024-06-28 03:43:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:45,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598300881] [2024-06-28 03:43:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598300881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:46,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:46,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832383899] [2024-06-28 03:43:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:46,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:46,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:46,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:46,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 230 transitions, 1789 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:46,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:46,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:46,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:47,113 INFO L124 PetriNetUnfolderBase]: 685/1441 cut-off events. [2024-06-28 03:43:47,113 INFO L125 PetriNetUnfolderBase]: For 160919/160919 co-relation queries the response was YES. [2024-06-28 03:43:47,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8498 conditions, 1441 events. 685/1441 cut-off events. For 160919/160919 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9236 event pairs, 329 based on Foata normal form. 6/1446 useless extension candidates. Maximal degree in co-relation 8354. Up to 1263 conditions per place. [2024-06-28 03:43:47,128 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 19 changer transitions 6/250 dead transitions. [2024-06-28 03:43:47,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 250 transitions, 2591 flow [2024-06-28 03:43:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:43:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:43:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-28 03:43:47,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-28 03:43:47,129 INFO L175 Difference]: Start difference. First operand has 354 places, 230 transitions, 1789 flow. Second operand 13 states and 163 transitions. [2024-06-28 03:43:47,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 250 transitions, 2591 flow [2024-06-28 03:43:47,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 250 transitions, 2555 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:47,740 INFO L231 Difference]: Finished difference. Result has 354 places, 228 transitions, 1783 flow [2024-06-28 03:43:47,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1783, PETRI_PLACES=354, PETRI_TRANSITIONS=228} [2024-06-28 03:43:47,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-28 03:43:47,740 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 228 transitions, 1783 flow [2024-06-28 03:43:47,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:47,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:47,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:47,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 03:43:47,741 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)] === [2024-06-28 03:43:47,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1141416234, now seen corresponding path program 16 times [2024-06-28 03:43:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343878787] [2024-06-28 03:43:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:47,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:49,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:49,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343878787] [2024-06-28 03:43:49,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343878787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:49,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:49,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:49,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484433730] [2024-06-28 03:43:49,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:49,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:49,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:49,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:49,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:49,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:49,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 228 transitions, 1783 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:49,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:49,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:49,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:49,578 INFO L124 PetriNetUnfolderBase]: 661/1388 cut-off events. [2024-06-28 03:43:49,579 INFO L125 PetriNetUnfolderBase]: For 140610/140610 co-relation queries the response was YES. [2024-06-28 03:43:49,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7550 conditions, 1388 events. 661/1388 cut-off events. For 140610/140610 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8815 event pairs, 207 based on Foata normal form. 8/1393 useless extension candidates. Maximal degree in co-relation 7407. Up to 1107 conditions per place. [2024-06-28 03:43:49,594 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 58 changer transitions 13/246 dead transitions. [2024-06-28 03:43:49,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 246 transitions, 2359 flow [2024-06-28 03:43:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:43:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:43:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 171 transitions. [2024-06-28 03:43:49,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110576923076923 [2024-06-28 03:43:49,595 INFO L175 Difference]: Start difference. First operand has 354 places, 228 transitions, 1783 flow. Second operand 13 states and 171 transitions. [2024-06-28 03:43:49,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 246 transitions, 2359 flow [2024-06-28 03:43:50,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 246 transitions, 2315 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:43:50,064 INFO L231 Difference]: Finished difference. Result has 353 places, 223 transitions, 1829 flow [2024-06-28 03:43:50,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1829, PETRI_PLACES=353, PETRI_TRANSITIONS=223} [2024-06-28 03:43:50,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-28 03:43:50,065 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 223 transitions, 1829 flow [2024-06-28 03:43:50,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:50,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:50,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:50,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 03:43:50,066 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)] === [2024-06-28 03:43:50,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash 583436100, now seen corresponding path program 17 times [2024-06-28 03:43:50,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:50,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526742756] [2024-06-28 03:43:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:50,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:51,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526742756] [2024-06-28 03:43:51,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526742756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:51,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:51,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:51,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366736528] [2024-06-28 03:43:51,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:51,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:51,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:51,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:51,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:51,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:51,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 223 transitions, 1829 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:51,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:51,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:51,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:51,714 INFO L124 PetriNetUnfolderBase]: 632/1329 cut-off events. [2024-06-28 03:43:51,715 INFO L125 PetriNetUnfolderBase]: For 107228/107228 co-relation queries the response was YES. [2024-06-28 03:43:51,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6602 conditions, 1329 events. 632/1329 cut-off events. For 107228/107228 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8427 event pairs, 309 based on Foata normal form. 8/1335 useless extension candidates. Maximal degree in co-relation 6461. Up to 1213 conditions per place. [2024-06-28 03:43:51,728 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 208 selfloop transitions, 13 changer transitions 13/238 dead transitions. [2024-06-28 03:43:51,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 238 transitions, 2381 flow [2024-06-28 03:43:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:43:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:43:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-28 03:43:51,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-28 03:43:51,729 INFO L175 Difference]: Start difference. First operand has 353 places, 223 transitions, 1829 flow. Second operand 13 states and 155 transitions. [2024-06-28 03:43:51,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 238 transitions, 2381 flow [2024-06-28 03:43:52,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 238 transitions, 2241 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-28 03:43:52,120 INFO L231 Difference]: Finished difference. Result has 346 places, 218 transitions, 1691 flow [2024-06-28 03:43:52,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1691, PETRI_PLACES=346, PETRI_TRANSITIONS=218} [2024-06-28 03:43:52,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-28 03:43:52,121 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 218 transitions, 1691 flow [2024-06-28 03:43:52,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:52,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:52,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:52,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 03:43:52,121 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)] === [2024-06-28 03:43:52,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1690209498, now seen corresponding path program 18 times [2024-06-28 03:43:52,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:52,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160653485] [2024-06-28 03:43:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:52,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:53,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:53,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160653485] [2024-06-28 03:43:53,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160653485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:53,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:53,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:53,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135165627] [2024-06-28 03:43:53,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:53,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:53,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:53,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:53,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 218 transitions, 1691 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:53,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:53,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:53,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:53,536 INFO L124 PetriNetUnfolderBase]: 603/1265 cut-off events. [2024-06-28 03:43:53,537 INFO L125 PetriNetUnfolderBase]: For 71801/71801 co-relation queries the response was YES. [2024-06-28 03:43:53,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5415 conditions, 1265 events. 603/1265 cut-off events. For 71801/71801 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7932 event pairs, 297 based on Foata normal form. 8/1272 useless extension candidates. Maximal degree in co-relation 5277. Up to 1154 conditions per place. [2024-06-28 03:43:53,549 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 10 changer transitions 15/232 dead transitions. [2024-06-28 03:43:53,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 232 transitions, 2187 flow [2024-06-28 03:43:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:43:53,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:43:53,550 INFO L175 Difference]: Start difference. First operand has 346 places, 218 transitions, 1691 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:43:53,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 232 transitions, 2187 flow [2024-06-28 03:43:53,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 232 transitions, 2144 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:43:53,731 INFO L231 Difference]: Finished difference. Result has 338 places, 211 transitions, 1607 flow [2024-06-28 03:43:53,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1607, PETRI_PLACES=338, PETRI_TRANSITIONS=211} [2024-06-28 03:43:53,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-28 03:43:53,731 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 211 transitions, 1607 flow [2024-06-28 03:43:53,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:53,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:53,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:53,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 03:43:53,732 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)] === [2024-06-28 03:43:53,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1087192218, now seen corresponding path program 1 times [2024-06-28 03:43:53,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:53,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510693645] [2024-06-28 03:43:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:53,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:55,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:55,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510693645] [2024-06-28 03:43:55,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510693645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:55,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:55,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:55,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816103673] [2024-06-28 03:43:55,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:55,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:55,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:55,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:55,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:55,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:55,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 211 transitions, 1607 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:55,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:55,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:55,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:55,647 INFO L124 PetriNetUnfolderBase]: 591/1238 cut-off events. [2024-06-28 03:43:55,647 INFO L125 PetriNetUnfolderBase]: For 61970/61970 co-relation queries the response was YES. [2024-06-28 03:43:55,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5219 conditions, 1238 events. 591/1238 cut-off events. For 61970/61970 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7694 event pairs, 167 based on Foata normal form. 6/1243 useless extension candidates. Maximal degree in co-relation 5083. Up to 1087 conditions per place. [2024-06-28 03:43:55,659 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 21 changer transitions 12/233 dead transitions. [2024-06-28 03:43:55,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 233 transitions, 2125 flow [2024-06-28 03:43:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:43:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:43:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-28 03:43:55,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-28 03:43:55,661 INFO L175 Difference]: Start difference. First operand has 338 places, 211 transitions, 1607 flow. Second operand 13 states and 167 transitions. [2024-06-28 03:43:55,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 233 transitions, 2125 flow [2024-06-28 03:43:55,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 233 transitions, 2053 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-28 03:43:55,856 INFO L231 Difference]: Finished difference. Result has 328 places, 207 transitions, 1557 flow [2024-06-28 03:43:55,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1557, PETRI_PLACES=328, PETRI_TRANSITIONS=207} [2024-06-28 03:43:55,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-28 03:43:55,856 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 207 transitions, 1557 flow [2024-06-28 03:43:55,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:55,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:55,857 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] [2024-06-28 03:43:55,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 03:43:55,857 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)] === [2024-06-28 03:43:55,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1489915966, now seen corresponding path program 2 times [2024-06-28 03:43:55,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:55,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063595195] [2024-06-28 03:43:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:57,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:57,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063595195] [2024-06-28 03:43:57,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063595195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:57,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:57,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:57,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33368826] [2024-06-28 03:43:57,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:57,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:57,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:57,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:57,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:57,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:57,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 207 transitions, 1557 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:57,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:57,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:57,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:57,742 INFO L124 PetriNetUnfolderBase]: 577/1212 cut-off events. [2024-06-28 03:43:57,742 INFO L125 PetriNetUnfolderBase]: For 58454/58454 co-relation queries the response was YES. [2024-06-28 03:43:57,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5001 conditions, 1212 events. 577/1212 cut-off events. For 58454/58454 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7499 event pairs, 167 based on Foata normal form. 6/1217 useless extension candidates. Maximal degree in co-relation 4870. Up to 1083 conditions per place. [2024-06-28 03:43:57,752 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 18 changer transitions 15/228 dead transitions. [2024-06-28 03:43:57,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 228 transitions, 2057 flow [2024-06-28 03:43:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:43:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:43:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-28 03:43:57,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-28 03:43:57,753 INFO L175 Difference]: Start difference. First operand has 328 places, 207 transitions, 1557 flow. Second operand 13 states and 163 transitions. [2024-06-28 03:43:57,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 228 transitions, 2057 flow [2024-06-28 03:43:57,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 228 transitions, 1995 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:43:57,929 INFO L231 Difference]: Finished difference. Result has 323 places, 202 transitions, 1504 flow [2024-06-28 03:43:57,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1504, PETRI_PLACES=323, PETRI_TRANSITIONS=202} [2024-06-28 03:43:57,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-28 03:43:57,930 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 202 transitions, 1504 flow [2024-06-28 03:43:57,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:57,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:57,930 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] [2024-06-28 03:43:57,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 03:43:57,930 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)] === [2024-06-28 03:43:57,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash -151381152, now seen corresponding path program 3 times [2024-06-28 03:43:57,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:57,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949175411] [2024-06-28 03:43:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:57,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:59,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:59,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949175411] [2024-06-28 03:43:59,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949175411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:59,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:59,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733635563] [2024-06-28 03:43:59,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:59,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:59,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:59,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:43:59,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 202 transitions, 1504 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:59,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:59,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:43:59,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:59,763 INFO L124 PetriNetUnfolderBase]: 565/1188 cut-off events. [2024-06-28 03:43:59,763 INFO L125 PetriNetUnfolderBase]: For 58418/58418 co-relation queries the response was YES. [2024-06-28 03:43:59,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4876 conditions, 1188 events. 565/1188 cut-off events. For 58418/58418 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7333 event pairs, 161 based on Foata normal form. 6/1193 useless extension candidates. Maximal degree in co-relation 4747. Up to 1049 conditions per place. [2024-06-28 03:43:59,774 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 186 selfloop transitions, 16 changer transitions 19/225 dead transitions. [2024-06-28 03:43:59,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 225 transitions, 2002 flow [2024-06-28 03:43:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:43:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:43:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-28 03:43:59,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-28 03:43:59,775 INFO L175 Difference]: Start difference. First operand has 323 places, 202 transitions, 1504 flow. Second operand 13 states and 164 transitions. [2024-06-28 03:43:59,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 225 transitions, 2002 flow [2024-06-28 03:43:59,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 225 transitions, 1956 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:59,921 INFO L231 Difference]: Finished difference. Result has 316 places, 196 transitions, 1447 flow [2024-06-28 03:43:59,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1447, PETRI_PLACES=316, PETRI_TRANSITIONS=196} [2024-06-28 03:43:59,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-28 03:43:59,922 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 196 transitions, 1447 flow [2024-06-28 03:43:59,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:59,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:59,922 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] [2024-06-28 03:43:59,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 03:43:59,922 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)] === [2024-06-28 03:43:59,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash -143650754, now seen corresponding path program 4 times [2024-06-28 03:43:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:59,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034905783] [2024-06-28 03:43:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:59,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:00,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:00,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034905783] [2024-06-28 03:44:00,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034905783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:00,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:00,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:00,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870273349] [2024-06-28 03:44:00,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:00,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:00,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:00,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:00,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:01,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:01,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 196 transitions, 1447 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:01,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:01,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:01,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:01,426 INFO L124 PetriNetUnfolderBase]: 546/1151 cut-off events. [2024-06-28 03:44:01,426 INFO L125 PetriNetUnfolderBase]: For 55544/55544 co-relation queries the response was YES. [2024-06-28 03:44:01,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 1151 events. 546/1151 cut-off events. For 55544/55544 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7031 event pairs, 153 based on Foata normal form. 6/1156 useless extension candidates. Maximal degree in co-relation 4583. Up to 1003 conditions per place. [2024-06-28 03:44:01,436 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 14 changer transitions 24/221 dead transitions. [2024-06-28 03:44:01,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 221 transitions, 1943 flow [2024-06-28 03:44:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 03:44:01,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 03:44:01,437 INFO L175 Difference]: Start difference. First operand has 316 places, 196 transitions, 1447 flow. Second operand 13 states and 165 transitions. [2024-06-28 03:44:01,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 221 transitions, 1943 flow [2024-06-28 03:44:01,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 221 transitions, 1891 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:01,570 INFO L231 Difference]: Finished difference. Result has 307 places, 189 transitions, 1368 flow [2024-06-28 03:44:01,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1368, PETRI_PLACES=307, PETRI_TRANSITIONS=189} [2024-06-28 03:44:01,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-28 03:44:01,571 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 189 transitions, 1368 flow [2024-06-28 03:44:01,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:01,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:01,571 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] [2024-06-28 03:44:01,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 03:44:01,571 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)] === [2024-06-28 03:44:01,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash -803333036, now seen corresponding path program 5 times [2024-06-28 03:44:01,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:01,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931457710] [2024-06-28 03:44:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:01,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:02,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:02,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931457710] [2024-06-28 03:44:02,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931457710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:02,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:02,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:02,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350375662] [2024-06-28 03:44:02,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:02,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:02,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:02,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:02,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 189 transitions, 1368 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:02,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:02,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:02,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:03,313 INFO L124 PetriNetUnfolderBase]: 520/1097 cut-off events. [2024-06-28 03:44:03,313 INFO L125 PetriNetUnfolderBase]: For 55425/55425 co-relation queries the response was YES. [2024-06-28 03:44:03,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4465 conditions, 1097 events. 520/1097 cut-off events. For 55425/55425 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6643 event pairs, 151 based on Foata normal form. 6/1102 useless extension candidates. Maximal degree in co-relation 4343. Up to 946 conditions per place. [2024-06-28 03:44:03,322 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 166 selfloop transitions, 26 changer transitions 13/209 dead transitions. [2024-06-28 03:44:03,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 209 transitions, 1826 flow [2024-06-28 03:44:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-28 03:44:03,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2024-06-28 03:44:03,323 INFO L175 Difference]: Start difference. First operand has 307 places, 189 transitions, 1368 flow. Second operand 13 states and 166 transitions. [2024-06-28 03:44:03,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 209 transitions, 1826 flow [2024-06-28 03:44:03,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 209 transitions, 1778 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:03,446 INFO L231 Difference]: Finished difference. Result has 295 places, 185 transitions, 1344 flow [2024-06-28 03:44:03,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1344, PETRI_PLACES=295, PETRI_TRANSITIONS=185} [2024-06-28 03:44:03,446 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-28 03:44:03,447 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 185 transitions, 1344 flow [2024-06-28 03:44:03,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:03,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:03,447 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] [2024-06-28 03:44:03,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 03:44:03,447 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)] === [2024-06-28 03:44:03,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1622578872, now seen corresponding path program 6 times [2024-06-28 03:44:03,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:03,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861343508] [2024-06-28 03:44:03,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:03,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:04,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:04,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861343508] [2024-06-28 03:44:04,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861343508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:04,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:04,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:04,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869268870] [2024-06-28 03:44:04,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:04,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:04,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:04,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:04,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:04,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 185 transitions, 1344 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:04,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:04,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:04,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:05,141 INFO L124 PetriNetUnfolderBase]: 509/1076 cut-off events. [2024-06-28 03:44:05,141 INFO L125 PetriNetUnfolderBase]: For 55375/55375 co-relation queries the response was YES. [2024-06-28 03:44:05,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 1076 events. 509/1076 cut-off events. For 55375/55375 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6491 event pairs, 147 based on Foata normal form. 6/1081 useless extension candidates. Maximal degree in co-relation 4268. Up to 920 conditions per place. [2024-06-28 03:44:05,150 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 24 changer transitions 16/206 dead transitions. [2024-06-28 03:44:05,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 206 transitions, 1798 flow [2024-06-28 03:44:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-28 03:44:05,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2024-06-28 03:44:05,151 INFO L175 Difference]: Start difference. First operand has 295 places, 185 transitions, 1344 flow. Second operand 13 states and 166 transitions. [2024-06-28 03:44:05,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 206 transitions, 1798 flow [2024-06-28 03:44:05,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 206 transitions, 1740 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:05,310 INFO L231 Difference]: Finished difference. Result has 292 places, 180 transitions, 1298 flow [2024-06-28 03:44:05,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1298, PETRI_PLACES=292, PETRI_TRANSITIONS=180} [2024-06-28 03:44:05,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-28 03:44:05,310 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 180 transitions, 1298 flow [2024-06-28 03:44:05,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:05,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:05,311 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] [2024-06-28 03:44:05,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 03:44:05,311 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)] === [2024-06-28 03:44:05,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:05,311 INFO L85 PathProgramCache]: Analyzing trace with hash 136712596, now seen corresponding path program 7 times [2024-06-28 03:44:05,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:05,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779177265] [2024-06-28 03:44:05,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:05,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:06,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:06,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779177265] [2024-06-28 03:44:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779177265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:06,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:06,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012613780] [2024-06-28 03:44:06,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:06,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:06,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:06,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:06,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 180 transitions, 1298 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:06,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:06,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:06,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:07,121 INFO L124 PetriNetUnfolderBase]: 494/1048 cut-off events. [2024-06-28 03:44:07,122 INFO L125 PetriNetUnfolderBase]: For 55394/55394 co-relation queries the response was YES. [2024-06-28 03:44:07,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 1048 events. 494/1048 cut-off events. For 55394/55394 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6287 event pairs, 183 based on Foata normal form. 6/1053 useless extension candidates. Maximal degree in co-relation 4153. Up to 925 conditions per place. [2024-06-28 03:44:07,133 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 16 changer transitions 13/200 dead transitions. [2024-06-28 03:44:07,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 200 transitions, 1738 flow [2024-06-28 03:44:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-28 03:44:07,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-06-28 03:44:07,134 INFO L175 Difference]: Start difference. First operand has 292 places, 180 transitions, 1298 flow. Second operand 13 states and 161 transitions. [2024-06-28 03:44:07,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 200 transitions, 1738 flow [2024-06-28 03:44:07,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 200 transitions, 1682 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:07,299 INFO L231 Difference]: Finished difference. Result has 287 places, 176 transitions, 1248 flow [2024-06-28 03:44:07,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1248, PETRI_PLACES=287, PETRI_TRANSITIONS=176} [2024-06-28 03:44:07,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-28 03:44:07,300 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 176 transitions, 1248 flow [2024-06-28 03:44:07,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:07,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:07,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:07,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 03:44:07,301 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)] === [2024-06-28 03:44:07,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:07,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1732806746, now seen corresponding path program 8 times [2024-06-28 03:44:07,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:07,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201924858] [2024-06-28 03:44:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:07,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201924858] [2024-06-28 03:44:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201924858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:08,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:08,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406684382] [2024-06-28 03:44:08,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:08,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:08,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:08,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 176 transitions, 1248 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:08,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:08,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:08,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:08,796 INFO L124 PetriNetUnfolderBase]: 483/1027 cut-off events. [2024-06-28 03:44:08,796 INFO L125 PetriNetUnfolderBase]: For 55407/55407 co-relation queries the response was YES. [2024-06-28 03:44:08,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4167 conditions, 1027 events. 483/1027 cut-off events. For 55407/55407 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6142 event pairs, 175 based on Foata normal form. 6/1032 useless extension candidates. Maximal degree in co-relation 4051. Up to 855 conditions per place. [2024-06-28 03:44:08,804 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 16 changer transitions 16/198 dead transitions. [2024-06-28 03:44:08,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 198 transitions, 1688 flow [2024-06-28 03:44:08,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-28 03:44:08,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-28 03:44:08,805 INFO L175 Difference]: Start difference. First operand has 287 places, 176 transitions, 1248 flow. Second operand 13 states and 164 transitions. [2024-06-28 03:44:08,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 198 transitions, 1688 flow [2024-06-28 03:44:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 198 transitions, 1650 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:08,941 INFO L231 Difference]: Finished difference. Result has 284 places, 170 transitions, 1199 flow [2024-06-28 03:44:08,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1199, PETRI_PLACES=284, PETRI_TRANSITIONS=170} [2024-06-28 03:44:08,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-28 03:44:08,956 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 170 transitions, 1199 flow [2024-06-28 03:44:08,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:08,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:08,956 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] [2024-06-28 03:44:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 03:44:08,957 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)] === [2024-06-28 03:44:08,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash 132243946, now seen corresponding path program 9 times [2024-06-28 03:44:08,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:08,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769970354] [2024-06-28 03:44:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:08,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:10,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:10,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769970354] [2024-06-28 03:44:10,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769970354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:10,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:10,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:10,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278691108] [2024-06-28 03:44:10,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:10,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:10,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:10,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:10,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 170 transitions, 1199 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:10,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:10,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:10,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:10,499 INFO L124 PetriNetUnfolderBase]: 464/988 cut-off events. [2024-06-28 03:44:10,500 INFO L125 PetriNetUnfolderBase]: For 55363/55363 co-relation queries the response was YES. [2024-06-28 03:44:10,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4031 conditions, 988 events. 464/988 cut-off events. For 55363/55363 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5832 event pairs, 171 based on Foata normal form. 6/993 useless extension candidates. Maximal degree in co-relation 3915. Up to 851 conditions per place. [2024-06-28 03:44:10,507 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 14 changer transitions 13/191 dead transitions. [2024-06-28 03:44:10,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 191 transitions, 1623 flow [2024-06-28 03:44:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-28 03:44:10,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-06-28 03:44:10,508 INFO L175 Difference]: Start difference. First operand has 284 places, 170 transitions, 1199 flow. Second operand 13 states and 161 transitions. [2024-06-28 03:44:10,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 191 transitions, 1623 flow [2024-06-28 03:44:10,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 191 transitions, 1581 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:10,635 INFO L231 Difference]: Finished difference. Result has 277 places, 165 transitions, 1149 flow [2024-06-28 03:44:10,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1149, PETRI_PLACES=277, PETRI_TRANSITIONS=165} [2024-06-28 03:44:10,636 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-28 03:44:10,636 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 165 transitions, 1149 flow [2024-06-28 03:44:10,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:10,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:10,636 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] [2024-06-28 03:44:10,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 03:44:10,636 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)] === [2024-06-28 03:44:10,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:10,637 INFO L85 PathProgramCache]: Analyzing trace with hash 272619430, now seen corresponding path program 10 times [2024-06-28 03:44:10,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393160073] [2024-06-28 03:44:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:10,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:11,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:11,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393160073] [2024-06-28 03:44:11,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393160073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:11,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:11,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:11,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587371674] [2024-06-28 03:44:11,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:11,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:11,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:11,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:11,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:11,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:11,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 165 transitions, 1149 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:11,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:11,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:11,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:12,227 INFO L124 PetriNetUnfolderBase]: 449/957 cut-off events. [2024-06-28 03:44:12,227 INFO L125 PetriNetUnfolderBase]: For 55221/55221 co-relation queries the response was YES. [2024-06-28 03:44:12,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3903 conditions, 957 events. 449/957 cut-off events. For 55221/55221 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5597 event pairs, 177 based on Foata normal form. 6/962 useless extension candidates. Maximal degree in co-relation 3789. Up to 847 conditions per place. [2024-06-28 03:44:12,234 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 151 selfloop transitions, 8 changer transitions 22/185 dead transitions. [2024-06-28 03:44:12,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 185 transitions, 1559 flow [2024-06-28 03:44:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-28 03:44:12,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-28 03:44:12,235 INFO L175 Difference]: Start difference. First operand has 277 places, 165 transitions, 1149 flow. Second operand 13 states and 157 transitions. [2024-06-28 03:44:12,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 185 transitions, 1559 flow [2024-06-28 03:44:12,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 185 transitions, 1523 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:12,354 INFO L231 Difference]: Finished difference. Result has 272 places, 157 transitions, 1072 flow [2024-06-28 03:44:12,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1072, PETRI_PLACES=272, PETRI_TRANSITIONS=157} [2024-06-28 03:44:12,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-28 03:44:12,355 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 157 transitions, 1072 flow [2024-06-28 03:44:12,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:12,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:12,355 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] [2024-06-28 03:44:12,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 03:44:12,355 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)] === [2024-06-28 03:44:12,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1102402472, now seen corresponding path program 11 times [2024-06-28 03:44:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:12,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152184551] [2024-06-28 03:44:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:12,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:13,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152184551] [2024-06-28 03:44:13,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152184551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:13,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:13,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:13,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759208993] [2024-06-28 03:44:13,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:13,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:13,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:13,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 157 transitions, 1072 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:13,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:13,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:13,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:13,794 INFO L124 PetriNetUnfolderBase]: 435/920 cut-off events. [2024-06-28 03:44:13,794 INFO L125 PetriNetUnfolderBase]: For 55127/55127 co-relation queries the response was YES. [2024-06-28 03:44:13,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 920 events. 435/920 cut-off events. For 55127/55127 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5299 event pairs, 156 based on Foata normal form. 6/925 useless extension candidates. Maximal degree in co-relation 3637. Up to 790 conditions per place. [2024-06-28 03:44:13,803 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 145 selfloop transitions, 13 changer transitions 21/183 dead transitions. [2024-06-28 03:44:13,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 183 transitions, 1494 flow [2024-06-28 03:44:13,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 03:44:13,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 03:44:13,805 INFO L175 Difference]: Start difference. First operand has 272 places, 157 transitions, 1072 flow. Second operand 13 states and 165 transitions. [2024-06-28 03:44:13,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 183 transitions, 1494 flow [2024-06-28 03:44:13,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 183 transitions, 1427 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:13,909 INFO L231 Difference]: Finished difference. Result has 258 places, 151 transitions, 985 flow [2024-06-28 03:44:13,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=985, PETRI_PLACES=258, PETRI_TRANSITIONS=151} [2024-06-28 03:44:13,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-28 03:44:13,909 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 151 transitions, 985 flow [2024-06-28 03:44:13,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:13,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:13,909 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] [2024-06-28 03:44:13,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 03:44:13,910 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)] === [2024-06-28 03:44:13,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:13,910 INFO L85 PathProgramCache]: Analyzing trace with hash -593300980, now seen corresponding path program 12 times [2024-06-28 03:44:13,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:13,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398066288] [2024-06-28 03:44:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:13,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:15,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:15,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398066288] [2024-06-28 03:44:15,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398066288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:15,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:15,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:15,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534358272] [2024-06-28 03:44:15,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:15,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:15,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:15,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:15,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:15,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 151 transitions, 985 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:15,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:15,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:15,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:15,851 INFO L124 PetriNetUnfolderBase]: 411/874 cut-off events. [2024-06-28 03:44:15,851 INFO L125 PetriNetUnfolderBase]: For 53749/53749 co-relation queries the response was YES. [2024-06-28 03:44:15,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 874 events. 411/874 cut-off events. For 53749/53749 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4981 event pairs, 137 based on Foata normal form. 6/879 useless extension candidates. Maximal degree in co-relation 3404. Up to 746 conditions per place. [2024-06-28 03:44:15,857 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 141 selfloop transitions, 17 changer transitions 12/174 dead transitions. [2024-06-28 03:44:15,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 174 transitions, 1381 flow [2024-06-28 03:44:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:15,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 03:44:15,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 03:44:15,858 INFO L175 Difference]: Start difference. First operand has 258 places, 151 transitions, 985 flow. Second operand 13 states and 165 transitions. [2024-06-28 03:44:15,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 174 transitions, 1381 flow [2024-06-28 03:44:15,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 174 transitions, 1343 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:15,970 INFO L231 Difference]: Finished difference. Result has 248 places, 147 transitions, 956 flow [2024-06-28 03:44:15,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=956, PETRI_PLACES=248, PETRI_TRANSITIONS=147} [2024-06-28 03:44:15,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-28 03:44:15,971 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 147 transitions, 956 flow [2024-06-28 03:44:15,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:15,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:15,971 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] [2024-06-28 03:44:15,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 03:44:15,971 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)] === [2024-06-28 03:44:15,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash 474860328, now seen corresponding path program 13 times [2024-06-28 03:44:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:15,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506930521] [2024-06-28 03:44:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:15,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:17,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:17,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506930521] [2024-06-28 03:44:17,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506930521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:17,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:17,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270768114] [2024-06-28 03:44:17,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:17,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:17,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 147 transitions, 956 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:17,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:17,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:17,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:17,741 INFO L124 PetriNetUnfolderBase]: 382/815 cut-off events. [2024-06-28 03:44:17,741 INFO L125 PetriNetUnfolderBase]: For 35917/35917 co-relation queries the response was YES. [2024-06-28 03:44:17,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 815 events. 382/815 cut-off events. For 35917/35917 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4605 event pairs, 121 based on Foata normal form. 6/820 useless extension candidates. Maximal degree in co-relation 2770. Up to 709 conditions per place. [2024-06-28 03:44:17,746 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 14 changer transitions 14/168 dead transitions. [2024-06-28 03:44:17,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 168 transitions, 1336 flow [2024-06-28 03:44:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 03:44:17,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 03:44:17,747 INFO L175 Difference]: Start difference. First operand has 248 places, 147 transitions, 956 flow. Second operand 13 states and 160 transitions. [2024-06-28 03:44:17,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 168 transitions, 1336 flow [2024-06-28 03:44:17,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 168 transitions, 1286 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:17,817 INFO L231 Difference]: Finished difference. Result has 243 places, 142 transitions, 903 flow [2024-06-28 03:44:17,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=903, PETRI_PLACES=243, PETRI_TRANSITIONS=142} [2024-06-28 03:44:17,817 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-28 03:44:17,817 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 142 transitions, 903 flow [2024-06-28 03:44:17,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:17,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:17,817 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] [2024-06-28 03:44:17,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 03:44:17,818 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)] === [2024-06-28 03:44:17,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash 41173644, now seen corresponding path program 14 times [2024-06-28 03:44:17,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:17,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946763781] [2024-06-28 03:44:17,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:18,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:18,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:18,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946763781] [2024-06-28 03:44:18,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946763781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:18,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:18,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:18,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804460283] [2024-06-28 03:44:18,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:18,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:18,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:18,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:19,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:19,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 142 transitions, 903 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:19,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:19,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:19,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:19,306 INFO L124 PetriNetUnfolderBase]: 373/796 cut-off events. [2024-06-28 03:44:19,307 INFO L125 PetriNetUnfolderBase]: For 35886/35886 co-relation queries the response was YES. [2024-06-28 03:44:19,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 796 events. 373/796 cut-off events. For 35886/35886 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4442 event pairs, 108 based on Foata normal form. 6/801 useless extension candidates. Maximal degree in co-relation 2667. Up to 675 conditions per place. [2024-06-28 03:44:19,312 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 129 selfloop transitions, 11 changer transitions 22/166 dead transitions. [2024-06-28 03:44:19,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 166 transitions, 1285 flow [2024-06-28 03:44:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-28 03:44:19,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-28 03:44:19,313 INFO L175 Difference]: Start difference. First operand has 243 places, 142 transitions, 903 flow. Second operand 13 states and 162 transitions. [2024-06-28 03:44:19,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 166 transitions, 1285 flow [2024-06-28 03:44:19,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 166 transitions, 1242 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:19,380 INFO L231 Difference]: Finished difference. Result has 234 places, 135 transitions, 838 flow [2024-06-28 03:44:19,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=838, PETRI_PLACES=234, PETRI_TRANSITIONS=135} [2024-06-28 03:44:19,381 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-28 03:44:19,381 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 135 transitions, 838 flow [2024-06-28 03:44:19,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:19,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:19,381 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] [2024-06-28 03:44:19,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 03:44:19,381 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)] === [2024-06-28 03:44:19,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash 555770956, now seen corresponding path program 15 times [2024-06-28 03:44:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114299970] [2024-06-28 03:44:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:20,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:20,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114299970] [2024-06-28 03:44:20,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114299970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:20,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:20,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:20,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149042099] [2024-06-28 03:44:20,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:20,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:20,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:20,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:20,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:20,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:20,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 135 transitions, 838 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:20,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:20,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:20,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:20,920 INFO L124 PetriNetUnfolderBase]: 354/755 cut-off events. [2024-06-28 03:44:20,920 INFO L125 PetriNetUnfolderBase]: For 34907/34907 co-relation queries the response was YES. [2024-06-28 03:44:20,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 755 events. 354/755 cut-off events. For 34907/34907 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4134 event pairs, 66 based on Foata normal form. 6/760 useless extension candidates. Maximal degree in co-relation 2510. Up to 614 conditions per place. [2024-06-28 03:44:20,925 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 9 changer transitions 27/161 dead transitions. [2024-06-28 03:44:20,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 161 transitions, 1214 flow [2024-06-28 03:44:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:44:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:44:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-28 03:44:20,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-28 03:44:20,926 INFO L175 Difference]: Start difference. First operand has 234 places, 135 transitions, 838 flow. Second operand 13 states and 162 transitions. [2024-06-28 03:44:20,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 161 transitions, 1214 flow [2024-06-28 03:44:20,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 161 transitions, 1176 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:20,989 INFO L231 Difference]: Finished difference. Result has 224 places, 126 transitions, 762 flow [2024-06-28 03:44:20,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=762, PETRI_PLACES=224, PETRI_TRANSITIONS=126} [2024-06-28 03:44:20,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-28 03:44:20,990 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 126 transitions, 762 flow [2024-06-28 03:44:20,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:20,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:20,990 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] [2024-06-28 03:44:20,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 03:44:20,990 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)] === [2024-06-28 03:44:20,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash -252024180, now seen corresponding path program 16 times [2024-06-28 03:44:20,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:20,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448840997] [2024-06-28 03:44:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:20,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:22,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:22,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448840997] [2024-06-28 03:44:22,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448840997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:22,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:22,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:22,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133508100] [2024-06-28 03:44:22,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:22,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:22,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:22,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:22,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:22,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 126 transitions, 762 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:22,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:22,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:22,479 INFO L124 PetriNetUnfolderBase]: 327/692 cut-off events. [2024-06-28 03:44:22,479 INFO L125 PetriNetUnfolderBase]: For 34818/34818 co-relation queries the response was YES. [2024-06-28 03:44:22,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 692 events. 327/692 cut-off events. For 34818/34818 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3726 event pairs, 79 based on Foata normal form. 6/697 useless extension candidates. Maximal degree in co-relation 2293. Up to 566 conditions per place. [2024-06-28 03:44:22,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 14 changer transitions 12/144 dead transitions. [2024-06-28 03:44:22,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 144 transitions, 1086 flow [2024-06-28 03:44:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:44:22,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:44:22,485 INFO L175 Difference]: Start difference. First operand has 224 places, 126 transitions, 762 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:44:22,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 144 transitions, 1086 flow [2024-06-28 03:44:22,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 144 transitions, 1046 flow, removed 5 selfloop flow, removed 16 redundant places. [2024-06-28 03:44:22,533 INFO L231 Difference]: Finished difference. Result has 209 places, 122 transitions, 735 flow [2024-06-28 03:44:22,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=735, PETRI_PLACES=209, PETRI_TRANSITIONS=122} [2024-06-28 03:44:22,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-28 03:44:22,534 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 122 transitions, 735 flow [2024-06-28 03:44:22,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:22,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:22,534 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] [2024-06-28 03:44:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 03:44:22,534 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)] === [2024-06-28 03:44:22,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash -123644606, now seen corresponding path program 17 times [2024-06-28 03:44:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146017643] [2024-06-28 03:44:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:23,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:23,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146017643] [2024-06-28 03:44:23,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146017643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:23,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:23,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:23,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224860637] [2024-06-28 03:44:23,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:23,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:23,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:23,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:23,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 122 transitions, 735 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:23,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:23,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:23,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:24,033 INFO L124 PetriNetUnfolderBase]: 313/666 cut-off events. [2024-06-28 03:44:24,033 INFO L125 PetriNetUnfolderBase]: For 34782/34782 co-relation queries the response was YES. [2024-06-28 03:44:24,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 666 events. 313/666 cut-off events. For 34782/34782 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3565 event pairs, 77 based on Foata normal form. 6/671 useless extension candidates. Maximal degree in co-relation 2215. Up to 541 conditions per place. [2024-06-28 03:44:24,037 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 19 changer transitions 13/138 dead transitions. [2024-06-28 03:44:24,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 138 transitions, 1041 flow [2024-06-28 03:44:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:44:24,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:44:24,038 INFO L175 Difference]: Start difference. First operand has 209 places, 122 transitions, 735 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:44:24,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 138 transitions, 1041 flow [2024-06-28 03:44:24,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 138 transitions, 1005 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:24,082 INFO L231 Difference]: Finished difference. Result has 203 places, 118 transitions, 718 flow [2024-06-28 03:44:24,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=718, PETRI_PLACES=203, PETRI_TRANSITIONS=118} [2024-06-28 03:44:24,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-28 03:44:24,083 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 118 transitions, 718 flow [2024-06-28 03:44:24,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:24,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:24,083 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] [2024-06-28 03:44:24,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 03:44:24,084 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)] === [2024-06-28 03:44:24,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1369109442, now seen corresponding path program 18 times [2024-06-28 03:44:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:24,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759123607] [2024-06-28 03:44:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:24,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:25,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759123607] [2024-06-28 03:44:25,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759123607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:25,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:25,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442504407] [2024-06-28 03:44:25,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:25,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:25,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:25,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 118 transitions, 718 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:25,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:25,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:25,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:25,520 INFO L124 PetriNetUnfolderBase]: 302/645 cut-off events. [2024-06-28 03:44:25,520 INFO L125 PetriNetUnfolderBase]: For 32128/32128 co-relation queries the response was YES. [2024-06-28 03:44:25,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 645 events. 302/645 cut-off events. For 32128/32128 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3415 event pairs, 73 based on Foata normal form. 6/650 useless extension candidates. Maximal degree in co-relation 2144. Up to 515 conditions per place. [2024-06-28 03:44:25,524 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 17 changer transitions 16/135 dead transitions. [2024-06-28 03:44:25,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 135 transitions, 1020 flow [2024-06-28 03:44:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 03:44:25,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 03:44:25,525 INFO L175 Difference]: Start difference. First operand has 203 places, 118 transitions, 718 flow. Second operand 12 states and 150 transitions. [2024-06-28 03:44:25,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 135 transitions, 1020 flow [2024-06-28 03:44:25,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 135 transitions, 976 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:25,587 INFO L231 Difference]: Finished difference. Result has 198 places, 113 transitions, 685 flow [2024-06-28 03:44:25,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=685, PETRI_PLACES=198, PETRI_TRANSITIONS=113} [2024-06-28 03:44:25,587 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-28 03:44:25,587 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 113 transitions, 685 flow [2024-06-28 03:44:25,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:25,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:25,588 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] [2024-06-28 03:44:25,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 03:44:25,588 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)] === [2024-06-28 03:44:25,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:25,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1114851894, now seen corresponding path program 19 times [2024-06-28 03:44:25,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:25,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142413489] [2024-06-28 03:44:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:25,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:26,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:26,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142413489] [2024-06-28 03:44:26,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142413489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:26,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:26,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:26,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429781091] [2024-06-28 03:44:26,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:26,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:26,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:26,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:26,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 113 transitions, 685 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:26,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:26,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:26,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:26,989 INFO L124 PetriNetUnfolderBase]: 287/616 cut-off events. [2024-06-28 03:44:26,989 INFO L125 PetriNetUnfolderBase]: For 30400/30400 co-relation queries the response was YES. [2024-06-28 03:44:26,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 616 events. 287/616 cut-off events. For 30400/30400 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3215 event pairs, 71 based on Foata normal form. 6/621 useless extension candidates. Maximal degree in co-relation 2048. Up to 514 conditions per place. [2024-06-28 03:44:26,993 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 11 changer transitions 14/129 dead transitions. [2024-06-28 03:44:26,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 129 transitions, 973 flow [2024-06-28 03:44:26,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 03:44:26,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 03:44:26,994 INFO L175 Difference]: Start difference. First operand has 198 places, 113 transitions, 685 flow. Second operand 12 states and 147 transitions. [2024-06-28 03:44:26,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 129 transitions, 973 flow [2024-06-28 03:44:27,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 129 transitions, 923 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:27,037 INFO L231 Difference]: Finished difference. Result has 189 places, 108 transitions, 637 flow [2024-06-28 03:44:27,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=637, PETRI_PLACES=189, PETRI_TRANSITIONS=108} [2024-06-28 03:44:27,037 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-28 03:44:27,037 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 108 transitions, 637 flow [2024-06-28 03:44:27,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:27,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:27,038 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] [2024-06-28 03:44:27,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 03:44:27,038 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)] === [2024-06-28 03:44:27,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2084516576, now seen corresponding path program 20 times [2024-06-28 03:44:27,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:27,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057344431] [2024-06-28 03:44:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:27,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:28,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:28,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057344431] [2024-06-28 03:44:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057344431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:28,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184463752] [2024-06-28 03:44:28,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:28,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:28,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:28,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:28,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:28,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:28,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 108 transitions, 637 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:28,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:28,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:28,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:28,853 INFO L124 PetriNetUnfolderBase]: 275/590 cut-off events. [2024-06-28 03:44:28,853 INFO L125 PetriNetUnfolderBase]: For 27847/27847 co-relation queries the response was YES. [2024-06-28 03:44:28,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 590 events. 275/590 cut-off events. For 27847/27847 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3045 event pairs, 69 based on Foata normal form. 6/595 useless extension candidates. Maximal degree in co-relation 1948. Up to 479 conditions per place. [2024-06-28 03:44:28,856 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 15 changer transitions 13/124 dead transitions. [2024-06-28 03:44:28,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 124 transitions, 915 flow [2024-06-28 03:44:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 03:44:28,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-28 03:44:28,857 INFO L175 Difference]: Start difference. First operand has 189 places, 108 transitions, 637 flow. Second operand 12 states and 149 transitions. [2024-06-28 03:44:28,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 124 transitions, 915 flow [2024-06-28 03:44:28,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 124 transitions, 883 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:28,889 INFO L231 Difference]: Finished difference. Result has 182 places, 104 transitions, 620 flow [2024-06-28 03:44:28,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=620, PETRI_PLACES=182, PETRI_TRANSITIONS=104} [2024-06-28 03:44:28,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-28 03:44:28,890 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 104 transitions, 620 flow [2024-06-28 03:44:28,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:28,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:28,890 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] [2024-06-28 03:44:28,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 03:44:28,890 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)] === [2024-06-28 03:44:28,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1171035036, now seen corresponding path program 21 times [2024-06-28 03:44:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:28,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676239673] [2024-06-28 03:44:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:28,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676239673] [2024-06-28 03:44:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676239673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:29,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230856119] [2024-06-28 03:44:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:29,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:30,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:30,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 104 transitions, 620 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:30,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:30,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:30,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:30,333 INFO L124 PetriNetUnfolderBase]: 264/569 cut-off events. [2024-06-28 03:44:30,333 INFO L125 PetriNetUnfolderBase]: For 26252/26252 co-relation queries the response was YES. [2024-06-28 03:44:30,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1963 conditions, 569 events. 264/569 cut-off events. For 26252/26252 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2906 event pairs, 65 based on Foata normal form. 6/574 useless extension candidates. Maximal degree in co-relation 1884. Up to 453 conditions per place. [2024-06-28 03:44:30,336 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 12 changer transitions 17/121 dead transitions. [2024-06-28 03:44:30,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 121 transitions, 894 flow [2024-06-28 03:44:30,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 03:44:30,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-28 03:44:30,337 INFO L175 Difference]: Start difference. First operand has 182 places, 104 transitions, 620 flow. Second operand 12 states and 149 transitions. [2024-06-28 03:44:30,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 121 transitions, 894 flow [2024-06-28 03:44:30,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 121 transitions, 856 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:30,376 INFO L231 Difference]: Finished difference. Result has 176 places, 98 transitions, 583 flow [2024-06-28 03:44:30,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=583, PETRI_PLACES=176, PETRI_TRANSITIONS=98} [2024-06-28 03:44:30,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-28 03:44:30,376 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 98 transitions, 583 flow [2024-06-28 03:44:30,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:30,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:30,376 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] [2024-06-28 03:44:30,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 03:44:30,377 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)] === [2024-06-28 03:44:30,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:30,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1541020018, now seen corresponding path program 22 times [2024-06-28 03:44:30,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:30,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865030884] [2024-06-28 03:44:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:30,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:31,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:31,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865030884] [2024-06-28 03:44:31,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865030884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:31,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:31,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:31,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593549925] [2024-06-28 03:44:31,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:31,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:31,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:31,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 98 transitions, 583 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:31,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:31,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:31,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:31,800 INFO L124 PetriNetUnfolderBase]: 248/535 cut-off events. [2024-06-28 03:44:31,800 INFO L125 PetriNetUnfolderBase]: For 23922/23922 co-relation queries the response was YES. [2024-06-28 03:44:31,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 535 events. 248/535 cut-off events. For 23922/23922 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2654 event pairs, 59 based on Foata normal form. 6/540 useless extension candidates. Maximal degree in co-relation 1774. Up to 436 conditions per place. [2024-06-28 03:44:31,803 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 5 changer transitions 21/116 dead transitions. [2024-06-28 03:44:31,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 116 transitions, 849 flow [2024-06-28 03:44:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:44:31,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:44:31,804 INFO L175 Difference]: Start difference. First operand has 176 places, 98 transitions, 583 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:44:31,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 116 transitions, 849 flow [2024-06-28 03:44:31,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 116 transitions, 815 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:31,832 INFO L231 Difference]: Finished difference. Result has 167 places, 91 transitions, 531 flow [2024-06-28 03:44:31,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=531, PETRI_PLACES=167, PETRI_TRANSITIONS=91} [2024-06-28 03:44:31,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-28 03:44:31,833 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 91 transitions, 531 flow [2024-06-28 03:44:31,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:31,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:31,833 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] [2024-06-28 03:44:31,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 03:44:31,833 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)] === [2024-06-28 03:44:31,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:31,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1324123062, now seen corresponding path program 23 times [2024-06-28 03:44:31,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:31,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478579454] [2024-06-28 03:44:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:31,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:33,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:33,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478579454] [2024-06-28 03:44:33,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478579454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:33,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:33,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:33,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383564709] [2024-06-28 03:44:33,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:33,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:33,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:33,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:33,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:33,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:33,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 91 transitions, 531 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:33,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:33,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:33,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:33,549 INFO L124 PetriNetUnfolderBase]: 228/493 cut-off events. [2024-06-28 03:44:33,549 INFO L125 PetriNetUnfolderBase]: For 20971/20971 co-relation queries the response was YES. [2024-06-28 03:44:33,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1702 conditions, 493 events. 228/493 cut-off events. For 20971/20971 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2386 event pairs, 59 based on Foata normal form. 6/498 useless extension candidates. Maximal degree in co-relation 1630. Up to 409 conditions per place. [2024-06-28 03:44:33,552 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 11 changer transitions 10/107 dead transitions. [2024-06-28 03:44:33,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 107 transitions, 777 flow [2024-06-28 03:44:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:44:33,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:44:33,553 INFO L175 Difference]: Start difference. First operand has 167 places, 91 transitions, 531 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:44:33,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 107 transitions, 777 flow [2024-06-28 03:44:33,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 107 transitions, 755 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:33,577 INFO L231 Difference]: Finished difference. Result has 156 places, 88 transitions, 520 flow [2024-06-28 03:44:33,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=520, PETRI_PLACES=156, PETRI_TRANSITIONS=88} [2024-06-28 03:44:33,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-28 03:44:33,578 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 88 transitions, 520 flow [2024-06-28 03:44:33,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:33,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:33,578 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] [2024-06-28 03:44:33,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 03:44:33,578 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)] === [2024-06-28 03:44:33,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1278450418, now seen corresponding path program 24 times [2024-06-28 03:44:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:33,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763257958] [2024-06-28 03:44:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:33,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:34,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763257958] [2024-06-28 03:44:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763257958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:34,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:34,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:34,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169007759] [2024-06-28 03:44:34,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:34,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:34,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:34,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 88 transitions, 520 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:34,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:34,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:34,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:35,116 INFO L124 PetriNetUnfolderBase]: 221/480 cut-off events. [2024-06-28 03:44:35,116 INFO L125 PetriNetUnfolderBase]: For 17598/17598 co-relation queries the response was YES. [2024-06-28 03:44:35,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 480 events. 221/480 cut-off events. For 17598/17598 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2299 event pairs, 57 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 1577. Up to 391 conditions per place. [2024-06-28 03:44:35,119 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 8 changer transitions 15/105 dead transitions. [2024-06-28 03:44:35,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 105 transitions, 764 flow [2024-06-28 03:44:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:44:35,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:44:35,120 INFO L175 Difference]: Start difference. First operand has 156 places, 88 transitions, 520 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:44:35,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 105 transitions, 764 flow [2024-06-28 03:44:35,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 105 transitions, 736 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:35,143 INFO L231 Difference]: Finished difference. Result has 152 places, 83 transitions, 489 flow [2024-06-28 03:44:35,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=489, PETRI_PLACES=152, PETRI_TRANSITIONS=83} [2024-06-28 03:44:35,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-28 03:44:35,143 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 83 transitions, 489 flow [2024-06-28 03:44:35,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:35,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:35,143 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] [2024-06-28 03:44:35,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 03:44:35,144 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)] === [2024-06-28 03:44:35,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:35,144 INFO L85 PathProgramCache]: Analyzing trace with hash 997520114, now seen corresponding path program 25 times [2024-06-28 03:44:35,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:35,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714954966] [2024-06-28 03:44:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:35,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:36,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:36,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714954966] [2024-06-28 03:44:36,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714954966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:36,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:36,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:36,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276354858] [2024-06-28 03:44:36,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:36,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:36,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:36,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:36,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:36,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 83 transitions, 489 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:36,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:36,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:36,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:36,369 INFO L124 PetriNetUnfolderBase]: 209/456 cut-off events. [2024-06-28 03:44:36,369 INFO L125 PetriNetUnfolderBase]: For 16326/16326 co-relation queries the response was YES. [2024-06-28 03:44:36,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 456 events. 209/456 cut-off events. For 16326/16326 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2133 event pairs, 51 based on Foata normal form. 6/461 useless extension candidates. Maximal degree in co-relation 1495. Up to 357 conditions per place. [2024-06-28 03:44:36,371 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 73 selfloop transitions, 6 changer transitions 19/102 dead transitions. [2024-06-28 03:44:36,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 102 transitions, 731 flow [2024-06-28 03:44:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:36,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 03:44:36,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-28 03:44:36,372 INFO L175 Difference]: Start difference. First operand has 152 places, 83 transitions, 489 flow. Second operand 12 states and 145 transitions. [2024-06-28 03:44:36,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 102 transitions, 731 flow [2024-06-28 03:44:36,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 102 transitions, 705 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:36,390 INFO L231 Difference]: Finished difference. Result has 144 places, 77 transitions, 451 flow [2024-06-28 03:44:36,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=451, PETRI_PLACES=144, PETRI_TRANSITIONS=77} [2024-06-28 03:44:36,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-28 03:44:36,391 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 77 transitions, 451 flow [2024-06-28 03:44:36,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:36,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:36,391 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] [2024-06-28 03:44:36,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 03:44:36,391 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)] === [2024-06-28 03:44:36,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 960414240, now seen corresponding path program 26 times [2024-06-28 03:44:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056185026] [2024-06-28 03:44:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:37,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056185026] [2024-06-28 03:44:37,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056185026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:37,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:37,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:37,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815706773] [2024-06-28 03:44:37,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:37,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:37,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:37,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:37,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:37,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 77 transitions, 451 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:37,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:37,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:37,562 INFO L124 PetriNetUnfolderBase]: 190/419 cut-off events. [2024-06-28 03:44:37,562 INFO L125 PetriNetUnfolderBase]: For 13928/13928 co-relation queries the response was YES. [2024-06-28 03:44:37,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 419 events. 190/419 cut-off events. For 13928/13928 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1897 event pairs, 43 based on Foata normal form. 6/424 useless extension candidates. Maximal degree in co-relation 1371. Up to 311 conditions per place. [2024-06-28 03:44:37,564 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 3 changer transitions 27/97 dead transitions. [2024-06-28 03:44:37,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 97 transitions, 685 flow [2024-06-28 03:44:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 03:44:37,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:44:37,565 INFO L175 Difference]: Start difference. First operand has 144 places, 77 transitions, 451 flow. Second operand 12 states and 144 transitions. [2024-06-28 03:44:37,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 97 transitions, 685 flow [2024-06-28 03:44:37,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 97 transitions, 661 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:37,576 INFO L231 Difference]: Finished difference. Result has 134 places, 69 transitions, 399 flow [2024-06-28 03:44:37,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=399, PETRI_PLACES=134, PETRI_TRANSITIONS=69} [2024-06-28 03:44:37,576 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-28 03:44:37,576 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 69 transitions, 399 flow [2024-06-28 03:44:37,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:37,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:37,576 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] [2024-06-28 03:44:37,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 03:44:37,577 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)] === [2024-06-28 03:44:37,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2098955684, now seen corresponding path program 27 times [2024-06-28 03:44:37,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:37,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849823422] [2024-06-28 03:44:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:37,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849823422] [2024-06-28 03:44:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849823422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:38,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:38,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:38,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087200002] [2024-06-28 03:44:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:38,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:38,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:38,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:38,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:38,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 69 transitions, 399 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:38,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:38,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:38,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:38,835 INFO L124 PetriNetUnfolderBase]: 162/357 cut-off events. [2024-06-28 03:44:38,835 INFO L125 PetriNetUnfolderBase]: For 11176/11180 co-relation queries the response was YES. [2024-06-28 03:44:38,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 357 events. 162/357 cut-off events. For 11176/11180 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1546 event pairs, 41 based on Foata normal form. 10/366 useless extension candidates. Maximal degree in co-relation 1171. Up to 236 conditions per place. [2024-06-28 03:44:38,837 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 47 selfloop transitions, 18 changer transitions 14/83 dead transitions. [2024-06-28 03:44:38,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 83 transitions, 587 flow [2024-06-28 03:44:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:44:38,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-28 03:44:38,838 INFO L175 Difference]: Start difference. First operand has 134 places, 69 transitions, 399 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:44:38,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 83 transitions, 587 flow [2024-06-28 03:44:38,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 83 transitions, 556 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:38,847 INFO L231 Difference]: Finished difference. Result has 119 places, 64 transitions, 383 flow [2024-06-28 03:44:38,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=383, PETRI_PLACES=119, PETRI_TRANSITIONS=64} [2024-06-28 03:44:38,848 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-28 03:44:38,848 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 64 transitions, 383 flow [2024-06-28 03:44:38,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:38,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:38,848 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] [2024-06-28 03:44:38,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 03:44:38,848 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)] === [2024-06-28 03:44:38,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:38,849 INFO L85 PathProgramCache]: Analyzing trace with hash -810801120, now seen corresponding path program 28 times [2024-06-28 03:44:38,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:38,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834007247] [2024-06-28 03:44:38,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:38,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:39,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:39,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834007247] [2024-06-28 03:44:39,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834007247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:39,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:39,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:39,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781281904] [2024-06-28 03:44:39,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:39,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:39,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:40,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:40,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 64 transitions, 383 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:40,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:40,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:40,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:40,231 INFO L124 PetriNetUnfolderBase]: 150/331 cut-off events. [2024-06-28 03:44:40,231 INFO L125 PetriNetUnfolderBase]: For 8292/8292 co-relation queries the response was YES. [2024-06-28 03:44:40,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 331 events. 150/331 cut-off events. For 8292/8292 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1391 event pairs, 39 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1092. Up to 218 conditions per place. [2024-06-28 03:44:40,233 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 18 changer transitions 13/78 dead transitions. [2024-06-28 03:44:40,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 78 transitions, 561 flow [2024-06-28 03:44:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:44:40,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-28 03:44:40,234 INFO L175 Difference]: Start difference. First operand has 119 places, 64 transitions, 383 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:44:40,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 78 transitions, 561 flow [2024-06-28 03:44:40,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 78 transitions, 513 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:40,256 INFO L231 Difference]: Finished difference. Result has 112 places, 60 transitions, 356 flow [2024-06-28 03:44:40,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=356, PETRI_PLACES=112, PETRI_TRANSITIONS=60} [2024-06-28 03:44:40,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-28 03:44:40,257 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 60 transitions, 356 flow [2024-06-28 03:44:40,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:40,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:40,257 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] [2024-06-28 03:44:40,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 03:44:40,257 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)] === [2024-06-28 03:44:40,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:40,264 INFO L85 PathProgramCache]: Analyzing trace with hash 211098840, now seen corresponding path program 29 times [2024-06-28 03:44:40,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:40,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348358702] [2024-06-28 03:44:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:40,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:41,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:41,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348358702] [2024-06-28 03:44:41,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348358702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:41,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:41,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:41,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729472134] [2024-06-28 03:44:41,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:41,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:41,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:41,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:41,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 60 transitions, 356 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:41,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:41,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:41,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:41,687 INFO L124 PetriNetUnfolderBase]: 139/310 cut-off events. [2024-06-28 03:44:41,687 INFO L125 PetriNetUnfolderBase]: For 7491/7495 co-relation queries the response was YES. [2024-06-28 03:44:41,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 310 events. 139/310 cut-off events. For 7491/7495 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1274 event pairs, 33 based on Foata normal form. 10/319 useless extension candidates. Maximal degree in co-relation 1018. Up to 178 conditions per place. [2024-06-28 03:44:41,689 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 41 selfloop transitions, 16 changer transitions 14/75 dead transitions. [2024-06-28 03:44:41,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 75 transitions, 530 flow [2024-06-28 03:44:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 03:44:41,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-28 03:44:41,689 INFO L175 Difference]: Start difference. First operand has 112 places, 60 transitions, 356 flow. Second operand 12 states and 143 transitions. [2024-06-28 03:44:41,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 75 transitions, 530 flow [2024-06-28 03:44:41,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 75 transitions, 486 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:41,696 INFO L231 Difference]: Finished difference. Result has 106 places, 54 transitions, 317 flow [2024-06-28 03:44:41,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=317, PETRI_PLACES=106, PETRI_TRANSITIONS=54} [2024-06-28 03:44:41,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-28 03:44:41,696 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 54 transitions, 317 flow [2024-06-28 03:44:41,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:41,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:41,697 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] [2024-06-28 03:44:41,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 03:44:41,697 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)] === [2024-06-28 03:44:41,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:41,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1536137786, now seen corresponding path program 30 times [2024-06-28 03:44:41,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:41,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277593077] [2024-06-28 03:44:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:41,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:42,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:42,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277593077] [2024-06-28 03:44:42,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277593077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:42,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:42,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:42,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416020096] [2024-06-28 03:44:42,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:42,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:42,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:42,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:42,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 54 transitions, 317 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:42,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:42,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:42,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:43,009 INFO L124 PetriNetUnfolderBase]: 123/274 cut-off events. [2024-06-28 03:44:43,009 INFO L125 PetriNetUnfolderBase]: For 6226/6230 co-relation queries the response was YES. [2024-06-28 03:44:43,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 274 events. 123/274 cut-off events. For 6226/6230 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1063 event pairs, 33 based on Foata normal form. 10/283 useless extension candidates. Maximal degree in co-relation 906. Up to 174 conditions per place. [2024-06-28 03:44:43,010 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 33 selfloop transitions, 14 changer transitions 17/68 dead transitions. [2024-06-28 03:44:43,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 68 transitions, 475 flow [2024-06-28 03:44:43,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 03:44:43,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-28 03:44:43,011 INFO L175 Difference]: Start difference. First operand has 106 places, 54 transitions, 317 flow. Second operand 12 states and 141 transitions. [2024-06-28 03:44:43,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 68 transitions, 475 flow [2024-06-28 03:44:43,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 68 transitions, 433 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 03:44:43,017 INFO L231 Difference]: Finished difference. Result has 97 places, 47 transitions, 274 flow [2024-06-28 03:44:43,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=274, PETRI_PLACES=97, PETRI_TRANSITIONS=47} [2024-06-28 03:44:43,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-28 03:44:43,018 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 47 transitions, 274 flow [2024-06-28 03:44:43,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:43,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:43,018 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] [2024-06-28 03:44:43,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 03:44:43,018 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)] === [2024-06-28 03:44:43,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1867887346, now seen corresponding path program 31 times [2024-06-28 03:44:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:43,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141597835] [2024-06-28 03:44:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:43,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:44,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:44,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141597835] [2024-06-28 03:44:44,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141597835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:44,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:44,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:44,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056906988] [2024-06-28 03:44:44,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:44,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:44,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:44,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:44,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:44,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:44,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 47 transitions, 274 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:44,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:44,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:44,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:44,309 INFO L124 PetriNetUnfolderBase]: 109/240 cut-off events. [2024-06-28 03:44:44,309 INFO L125 PetriNetUnfolderBase]: For 4760/4764 co-relation queries the response was YES. [2024-06-28 03:44:44,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 240 events. 109/240 cut-off events. For 4760/4764 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 876 event pairs, 31 based on Foata normal form. 10/249 useless extension candidates. Maximal degree in co-relation 790. Up to 156 conditions per place. [2024-06-28 03:44:44,310 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 13 changer transitions 14/61 dead transitions. [2024-06-28 03:44:44,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 418 flow [2024-06-28 03:44:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 03:44:44,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-28 03:44:44,311 INFO L175 Difference]: Start difference. First operand has 97 places, 47 transitions, 274 flow. Second operand 12 states and 139 transitions. [2024-06-28 03:44:44,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 418 flow [2024-06-28 03:44:44,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 61 transitions, 378 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:44,317 INFO L231 Difference]: Finished difference. Result has 86 places, 42 transitions, 239 flow [2024-06-28 03:44:44,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=239, PETRI_PLACES=86, PETRI_TRANSITIONS=42} [2024-06-28 03:44:44,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-28 03:44:44,317 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 42 transitions, 239 flow [2024-06-28 03:44:44,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:44,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:44,317 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] [2024-06-28 03:44:44,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 03:44:44,318 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)] === [2024-06-28 03:44:44,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:44,318 INFO L85 PathProgramCache]: Analyzing trace with hash -647193116, now seen corresponding path program 32 times [2024-06-28 03:44:44,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:44,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214909211] [2024-06-28 03:44:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:44,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:45,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214909211] [2024-06-28 03:44:45,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214909211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:45,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:45,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:45,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667289000] [2024-06-28 03:44:45,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:45,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:45,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 42 transitions, 239 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:45,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:45,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:45,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:45,607 INFO L124 PetriNetUnfolderBase]: 97/214 cut-off events. [2024-06-28 03:44:45,608 INFO L125 PetriNetUnfolderBase]: For 3192/3192 co-relation queries the response was YES. [2024-06-28 03:44:45,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 214 events. 97/214 cut-off events. For 3192/3192 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 730 event pairs, 29 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 692. Up to 138 conditions per place. [2024-06-28 03:44:45,608 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 11 changer transitions 13/56 dead transitions. [2024-06-28 03:44:45,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 56 transitions, 373 flow [2024-06-28 03:44:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 03:44:45,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-28 03:44:45,609 INFO L175 Difference]: Start difference. First operand has 86 places, 42 transitions, 239 flow. Second operand 12 states and 139 transitions. [2024-06-28 03:44:45,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 56 transitions, 373 flow [2024-06-28 03:44:45,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 56 transitions, 329 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 03:44:45,613 INFO L231 Difference]: Finished difference. Result has 78 places, 38 transitions, 202 flow [2024-06-28 03:44:45,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=202, PETRI_PLACES=78, PETRI_TRANSITIONS=38} [2024-06-28 03:44:45,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-28 03:44:45,614 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 38 transitions, 202 flow [2024-06-28 03:44:45,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:45,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:45,614 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] [2024-06-28 03:44:45,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 03:44:45,614 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)] === [2024-06-28 03:44:45,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:45,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1727511862, now seen corresponding path program 33 times [2024-06-28 03:44:45,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:45,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732293362] [2024-06-28 03:44:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:45,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:46,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732293362] [2024-06-28 03:44:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732293362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:46,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:46,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:46,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59284239] [2024-06-28 03:44:46,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:46,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:46,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:46,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:46,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 38 transitions, 202 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:46,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:46,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:46,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:47,167 INFO L124 PetriNetUnfolderBase]: 86/193 cut-off events. [2024-06-28 03:44:47,167 INFO L125 PetriNetUnfolderBase]: For 2656/2656 co-relation queries the response was YES. [2024-06-28 03:44:47,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 193 events. 86/193 cut-off events. For 2656/2656 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 619 event pairs, 25 based on Foata normal form. 6/198 useless extension candidates. Maximal degree in co-relation 610. Up to 112 conditions per place. [2024-06-28 03:44:47,168 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 24 selfloop transitions, 8 changer transitions 17/53 dead transitions. [2024-06-28 03:44:47,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 53 transitions, 332 flow [2024-06-28 03:44:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 03:44:47,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-28 03:44:47,169 INFO L175 Difference]: Start difference. First operand has 78 places, 38 transitions, 202 flow. Second operand 12 states and 139 transitions. [2024-06-28 03:44:47,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 53 transitions, 332 flow [2024-06-28 03:44:47,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 53 transitions, 304 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:47,171 INFO L231 Difference]: Finished difference. Result has 73 places, 32 transitions, 167 flow [2024-06-28 03:44:47,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=167, PETRI_PLACES=73, PETRI_TRANSITIONS=32} [2024-06-28 03:44:47,172 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-28 03:44:47,172 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 32 transitions, 167 flow [2024-06-28 03:44:47,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:47,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:47,172 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] [2024-06-28 03:44:47,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 03:44:47,172 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)] === [2024-06-28 03:44:47,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash 143391474, now seen corresponding path program 34 times [2024-06-28 03:44:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:47,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748414907] [2024-06-28 03:44:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:48,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748414907] [2024-06-28 03:44:48,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748414907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:48,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:48,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:48,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224040579] [2024-06-28 03:44:48,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:48,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:48,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:48,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 32 transitions, 167 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:48,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:48,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:48,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:48,698 INFO L124 PetriNetUnfolderBase]: 70/159 cut-off events. [2024-06-28 03:44:48,698 INFO L125 PetriNetUnfolderBase]: For 2166/2166 co-relation queries the response was YES. [2024-06-28 03:44:48,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 159 events. 70/159 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 455 event pairs, 23 based on Foata normal form. 6/164 useless extension candidates. Maximal degree in co-relation 506. Up to 94 conditions per place. [2024-06-28 03:44:48,699 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 21 selfloop transitions, 8 changer transitions 13/46 dead transitions. [2024-06-28 03:44:48,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 46 transitions, 281 flow [2024-06-28 03:44:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 03:44:48,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 03:44:48,700 INFO L175 Difference]: Start difference. First operand has 73 places, 32 transitions, 167 flow. Second operand 12 states and 136 transitions. [2024-06-28 03:44:48,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 46 transitions, 281 flow [2024-06-28 03:44:48,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 252 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:44:48,701 INFO L231 Difference]: Finished difference. Result has 64 places, 28 transitions, 139 flow [2024-06-28 03:44:48,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=139, PETRI_PLACES=64, PETRI_TRANSITIONS=28} [2024-06-28 03:44:48,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-28 03:44:48,702 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 28 transitions, 139 flow [2024-06-28 03:44:48,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:48,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:48,702 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] [2024-06-28 03:44:48,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 03:44:48,703 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)] === [2024-06-28 03:44:48,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash -26716310, now seen corresponding path program 35 times [2024-06-28 03:44:48,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:48,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585641804] [2024-06-28 03:44:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:48,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:49,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585641804] [2024-06-28 03:44:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585641804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:49,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:49,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:49,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825405199] [2024-06-28 03:44:49,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:49,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:50,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:50,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 28 transitions, 139 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:50,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:50,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:50,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:50,224 INFO L124 PetriNetUnfolderBase]: 59/138 cut-off events. [2024-06-28 03:44:50,225 INFO L125 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2024-06-28 03:44:50,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 138 events. 59/138 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 356 event pairs, 19 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 428. Up to 68 conditions per place. [2024-06-28 03:44:50,225 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 17 selfloop transitions, 6 changer transitions 16/43 dead transitions. [2024-06-28 03:44:50,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 43 transitions, 249 flow [2024-06-28 03:44:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:50,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 03:44:50,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-28 03:44:50,226 INFO L175 Difference]: Start difference. First operand has 64 places, 28 transitions, 139 flow. Second operand 12 states and 136 transitions. [2024-06-28 03:44:50,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 43 transitions, 249 flow [2024-06-28 03:44:50,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 43 transitions, 225 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:50,228 INFO L231 Difference]: Finished difference. Result has 58 places, 23 transitions, 108 flow [2024-06-28 03:44:50,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=23} [2024-06-28 03:44:50,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-28 03:44:50,228 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 23 transitions, 108 flow [2024-06-28 03:44:50,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:50,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:50,229 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] [2024-06-28 03:44:50,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 03:44:50,229 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)] === [2024-06-28 03:44:50,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:50,229 INFO L85 PathProgramCache]: Analyzing trace with hash -137538830, now seen corresponding path program 36 times [2024-06-28 03:44:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:50,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715433040] [2024-06-28 03:44:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:50,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:51,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715433040] [2024-06-28 03:44:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715433040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:51,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:51,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:51,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890644855] [2024-06-28 03:44:51,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:51,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:51,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:51,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 03:44:51,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 23 transitions, 108 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:51,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:51,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 03:44:51,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:51,632 INFO L124 PetriNetUnfolderBase]: 29/76 cut-off events. [2024-06-28 03:44:51,632 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-28 03:44:51,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 76 events. 29/76 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 6/81 useless extension candidates. Maximal degree in co-relation 190. Up to 24 conditions per place. [2024-06-28 03:44:51,633 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-06-28 03:44:51,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 34 transitions, 164 flow [2024-06-28 03:44:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:44:51,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-28 03:44:51,634 INFO L175 Difference]: Start difference. First operand has 58 places, 23 transitions, 108 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:44:51,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 34 transitions, 164 flow [2024-06-28 03:44:51,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 134 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-28 03:44:51,634 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-28 03:44:51,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=44, PETRI_TRANSITIONS=0} [2024-06-28 03:44:51,635 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-28 03:44:51,635 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-28 03:44:51,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:51,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:44:51,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:44:51,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:44:51,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:44:51,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 03:44:51,642 INFO L445 BasicCegarLoop]: Path program histogram: [38, 36, 35, 20, 18, 10, 9, 8, 7, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:51,658 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:44:51,659 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:44:51,663 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:44:51,663 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:44:51,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:44:51 BasicIcfg [2024-06-28 03:44:51,664 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:44:51,665 INFO L158 Benchmark]: Toolchain (without parser) took 301682.29ms. Allocated memory was 153.1MB in the beginning and 1.1GB in the end (delta: 996.1MB). Free memory was 118.3MB in the beginning and 615.4MB in the end (delta: -497.1MB). Peak memory consumption was 499.6MB. Max. memory is 16.1GB. [2024-06-28 03:44:51,665 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 153.1MB. Free memory was 111.1MB in the beginning and 111.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:44:51,665 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 153.1MB. Free memory is still 121.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:44:51,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 541.19ms. Allocated memory is still 153.1MB. Free memory was 118.3MB in the beginning and 84.9MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-28 03:44:51,666 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.20ms. Allocated memory is still 153.1MB. Free memory was 84.9MB in the beginning and 82.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:44:51,666 INFO L158 Benchmark]: Boogie Preprocessor took 73.08ms. Allocated memory is still 153.1MB. Free memory was 82.2MB in the beginning and 78.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:44:51,666 INFO L158 Benchmark]: RCFGBuilder took 623.09ms. Allocated memory is still 153.1MB. Free memory was 78.6MB in the beginning and 106.1MB in the end (delta: -27.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-06-28 03:44:51,666 INFO L158 Benchmark]: TraceAbstraction took 300395.15ms. Allocated memory was 153.1MB in the beginning and 1.1GB in the end (delta: 996.1MB). Free memory was 106.1MB in the beginning and 615.4MB in the end (delta: -509.3MB). Peak memory consumption was 487.5MB. Max. memory is 16.1GB. [2024-06-28 03:44:51,667 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 153.1MB. Free memory was 111.1MB in the beginning and 111.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 153.1MB. Free memory is still 121.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 541.19ms. Allocated memory is still 153.1MB. Free memory was 118.3MB in the beginning and 84.9MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.20ms. Allocated memory is still 153.1MB. Free memory was 84.9MB in the beginning and 82.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.08ms. Allocated memory is still 153.1MB. Free memory was 82.2MB in the beginning and 78.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 623.09ms. Allocated memory is still 153.1MB. Free memory was 78.6MB in the beginning and 106.1MB in the end (delta: -27.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 300395.15ms. Allocated memory was 153.1MB in the beginning and 1.1GB in the end (delta: 996.1MB). Free memory was 106.1MB in the beginning and 615.4MB in the end (delta: -509.3MB). Peak memory consumption was 487.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: 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, 52 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: 300.3s, OverallIterations: 215, TraceHistogramMax: 1, PathProgramHistogramMax: 38, EmptinessCheckTime: 0.0s, AutomataDifference: 119.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14963 SdHoareTripleChecker+Valid, 47.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12719 mSDsluCounter, 10808 SdHoareTripleChecker+Invalid, 41.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10054 mSDsCounter, 2674 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89092 IncrementalHoareTripleChecker+Invalid, 91766 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2674 mSolverCounterUnsat, 754 mSDtfsCounter, 89092 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2481 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5683 ImplicationChecksByTransitivity, 68.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2207occurred in iteration=167, InterpolantAutomatonStates: 2295, 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 177.8s InterpolantComputationTime, 3788 NumberOfCodeBlocks, 3788 NumberOfCodeBlocksAsserted, 215 NumberOfCheckSat, 3573 ConstructedInterpolants, 0 QuantifiedInterpolants, 169361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 215 InterpolantComputations, 215 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! [2024-06-28 03:44:51,710 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